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National Severe Weather Outlook for the next week

Here you'll find all available severe weather outlooks on one page.

Overview of the threat for the next few days

Saturday, August 8
Sunday, August 9
Monday, August 10
Tuesday, August 11
Wednesday, August 12
Thursday, August 13
Friday, August 14
Saturday, August 15

Outlook for Saturday, August 8

Outlook Summary

Scattered strong to severe thunderstorms capable primarily of damaging gusts will be possible today from the Mid-Atlantic states into southwest New England.

Outlook Images

overview

tornado low

wind 15%

hail 5%

Detailed Outlook

SPC AC 081605

Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1105 AM CDT Sat Aug 08 2026

Valid 081630Z - 091200Z

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM NORTHERN VIRGINIA INTO SOUTHEAST NEW YORK AND WESTERN MASSACHUSETTS.

### SUMMARY

Scattered strong to severe thunderstorms capable primarily of damaging gusts will be possible today from the Mid-Atlantic states into southwest New England.

Northeast States

Morning water vapor imagery shows a low-amplitude shortwave trough over OH tracking eastward. A warm/moist air mass is present ahead of the trough, with pockets of MLCAPE over 2000 J/kg expected later today. Large scale forcing associated with the trough is rather weak, and overall coverage of storms may be rather isolated. However, stronger winds aloft than yesterday suggest a conditional risk of wind damage with any sustained storm later today. Have extended the SLGT risk area a little farther north into NY/MA where morning model guidance suggests higher coverage/confidence in storms. Have also extended the MRGL farther west into OH beneath the upper trough where widely scattered storms may also produce gusty/damaging winds.

Western NC

A few afternoon thunderstorms are expected to form off the mountains of western NC and vicinity, and track slowly southeastward. Strong daytime heating, humid conditions, and sufficient CAPE may promote a risk of gusty/damaging winds in the strongest cores.

North TX

Isolated thunderstorms are expected to form along an E-W axis across north TX this afternoon in a hot/humid air mass. The strongest of these slow-moving cells may produce damaging winds.

NE/KS

A cluster of strong thunderstorms is ongoing over central NE. This activity may persist into the afternoon, tracking southeastward toward northeast KS/northwest MO. Given the corridor of high CAPE in this zone, a few strong/severe storms capable of damaging winds and hail are possible.

ND/SD/MN/IA

A strengthening southerly low-level jet will likely lead to scattered thunderstorms tonight after midnight over central ND. These storms are expected to develop southeastward into parts of SD/MN/IA before 12z. Relatively strong vertical shear will support supercells capable of hail and damaging winds.

AZ

Full sunshine and sufficient CAPE will once again promote thunderstorm develop off the Mogollon Rim this afternoon and evening. Forecast soundings show increasing mid-level moisture through the evening as an upper trough passes to the south, perhaps aiding convective maintenance westward into the lower elevations. If so, given the favorable steering flow, strong/severe outflow winds could spread into the PHX area around 00z. This scenario will be monitored for a possible upgrade to SLGT in later outlooks.

..Hart/Weinman.. 08/08/2026

CLICK TO GET WUUS01 PTSDY1 PRODUCT

NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 2000Z

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Outlook for Sunday, August 9

Outlook Summary

Thunderstorms with severe wind gusts will be possible Sunday afternoon and evening from parts of the northern Plains east-southeastward into the southern Great Lakes. Severe gusts will also be possible in parts of the southern Appalachians, Maine and southeast Arizona.

Outlook Images

overview

tornado 2%

wind 15%

hail 5%

Detailed Outlook

SPC AC 080630

Day 2 Convective Outlook CORR 1 NWS Storm Prediction Center Norman OK 0130 AM CDT Sat Aug 08 2026

Valid 091200Z - 101200Z

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF THE MIDWEST

CORRECTED FOR THUNDERLINE

SUMMARY

Thunderstorms with severe wind gusts will be possible Sunday afternoon and evening from parts of the northern Plains east-southeastward into the southern Great Lakes. Severe gusts will also be possible in parts of the southern Appalachians, Maine and southeast Arizona.

Northern Plains/Mid To Upper Mississippi Valley/Southern Great Lakes

Mid-level flow will be west-northwesterly on Sunday from the northern Plains into the Great Lakes. At the surface, a moist and unstable airmass will be in place from South Dakota eastward into the southern Great Lakes. Although moderate instability is forecast to develop over much of this corridor by afternoon, large-scale ascent will remain relatively weak. For that reason, thunderstorm development will confined to areas where low-level convergence becomes maximized. Some solutions show an east-to-west axis of strong low-level convergence from Iowa into northern Indiana, suggesting this could be a favored area for thunderstorm development in the afternoon and evening.

Forecast soundings near this axis in the late afternoon have surface dewpoints in the 70s with moderate to strong instability. 0-6 km shear is forecast to be in the 35 to 45 knot range with a substantial amount of low-level directional shear. This should support a severe threat with supercells and short intense line segments. Severe wind gusts will be the primary threat.

Further west into parts of the northern Plains, a subtle shortwave trough is forecast to move into South Dakota during the day. A post-frontal airmass will be in place ahead of the shortwave with surface dewpoints in the 60s to near 70 F. This will contribute to moderate instability by afternoon. Thunderstorms that develop near the axis of instability will have potential for isolated severe gusts during the late afternoon and early evening.

Maine

A mid-level shortwave trough is forecast to move across the Great Lakes on Sunday, with west-southwesterly flow located over the Northeast. Ahead of the system, a cold front is forecast to move eastward across New England. As surface temperatures warm during the day, thunderstorm development is expected to take place near the front in the higher terrain across parts of western Maine. These storms are forecast to move quickly eastward across central and eastern Maine during the afternoon. Moderate instability, steep low lapse rates and sufficient deep-layer shear will likely support an isolated wind-damage threat.

Southern Appalachians

Moderate instability will develop on Sunday across much of the southern Appalachians, where surface dewpoints will be in the upper 60s to mid 70s F. As surface temperatures warm during the day, scattered thunderstorms will develop in the higher terrain. The moderate instability, along with precipitable water values in the 1.70 to 1.85 inch range, will support a potential for isolated severe wet downbursts as instability becomes maximized in the late afternoon.

Southeast Arizona

Surface dewpoints across southern Arizona will be in the upper 50s to near 60 F on Sunday. As surface temperatures warm during the day, moderate instability will develop over much of southern Arizona. Thunderstorms are expected to form in the higher terrain of eastern Arizona, with the storms moving west-southwestward into the unstable air during the late afternoon and early evening. Steep low-level lapse rates and large surface temperature-dewpoint spreads will support an isolated wind-damage threat.

..Broyles.. 08/08/2026

CLICK TO GET WUUS02 PTSDY2 PRODUCT

NOTE: THE NEXT DAY 2 OUTLOOK IS SCHEDULED BY 1730Z

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Outlook for Monday, August 10

Outlook Summary

Thunderstorms with severe wind gusts will be possible on Monday from parts of northern Illinois eastward into western Pennsylvania. Isolated severe gusts will also be possible from parts of the central and northern Plains into the Midwest.

Outlook Images

overview

any severe 15%

Detailed Outlook

SPC AC 080720

Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0220 AM CDT Sat Aug 08 2026

Valid 101200Z - 111200Z

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM PARTS OF NORTHERN ILLINOIS EAST-SOUTHEASTWARD INTO WESTERN PENNSYLVANIA

### SUMMARY

Thunderstorms with severe wind gusts will be possible on Monday from parts of northern Illinois eastward into western Pennsylvania. Isolated severe gusts will also be possible from parts of the central and northern Plains into the Midwest.

Southern Great Lakes

A mid-level shortwave trough will move into the Great Lakes region on Monday. At the surface, a quasi-stationary front is forecast to be located from northern Illinois eastward into northwestern Pennsylvania. Surface dewpoints to the south of the front are forecast to be in the 70s F, which will contribute to moderate destabilization by midday. Scattered thunderstorms appear likely to develop near the front by early afternoon, with the storms moving southeastward into the unstable air. To the south of the front, MLCAPE is forecast to peak in the 2000 to 3000 J/kg range. In addition, the models show moderate deep-layer shear in place which will most likely support a mixed mode, with supercells and short intense line segments capable of severe wind gusts. The severe threat could continue into the mid to late evening if a cold pool can become established and persist.

Central and Northern Plains/Midwest

West-northwesterly mid-level flow will be in place over much of the north-central U.S. on Monday. At the surface, a low is forecast to deepen over South Dakota as a cold front moves through the northern Plains. To the south of the front, an axis of strong instability appears likely to develop by afternoon from northern Nebraska eastward into Iowa, where model forecasts suggest that MLCAPE could peak in the in the 3500 to 4500 J/kg range. In addition, forecast soundings show directional shear in the low to mid-levels, which will contribute to moderate deep-layer shear over much of the moist sector. This environment should support an isolated severe threat during the late afternoon and early evening. Due to relatively weak large-scale ascent, convective coverage is expected to be isolated, with any severe threat remaining localized.

..Broyles.. 08/08/2026

CLICK TO GET WUUS03 PTSDY3 PRODUCT

NOTE: THE NEXT DAY 3 OUTLOOK IS SCHEDULED BY 1930Z

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Outlook for Tuesday, August 11

Outlook Images

any severe predictability too low

Note on Medium Range Outlooks

You are looking at an outlook that is part of the medium range forecast (the outlook for days 4-8). The most important thing to note is that lack of a risk does not mean zero risk. Generally speaking, confidence has to be pretty high for the Storm Prediction Center to have an outlook area this far into the future.

When no specific risk areas are shown, you might see one of these phrases:

If you bookmark this page, it will continue to update with each new outlook that is issued.

Days Covered in this Outlook

Day 4 Tuesday, August 11 predictability too low
Day 5 Wednesday, August 12 predictability too low
Day 6 Thursday, August 13 predictability too low
Day 7 Friday, August 14 predictability too low
Day 8 Saturday, August 15 predictability too low

Detailed Outlook

ZCZC SPCSWOD48 ALL ACUS48 KWNS 080855 SPC AC 080855

Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0355 AM CDT Sat Aug 08 2026

Valid 111200Z - 161200Z

DISCUSSION

Tuesday/Day 4 and Wednesday/Day 5

A broad cyclonic mid-level flow pattern is forecast from the upper Mississippi Valley into the Northeast on Tuesday and Wednesday. At the surface, a moist airmass is forecast to be in place over most of the eastern half of the nation with a quasi-stationary front located from the northern Plains east-southeastward into the southern Great Lakes. To the south of the front, surface dewpoints in the 70s F will likely result in the development of moderate to strong instability. Isolated to scattered thunderstorms appear likely to develop each afternoon in areas where low-level convergence becomes maximized. Outflow boundaries will be important in determining where the greatest convective coverage ends up being. In addition to the instability, moderate deep-layer shear is forecast over much of this moist airmass suggesting that an isolated wind-damage threat will be possible. However, the lack of any appreciable mid-level shortwave trough introduces considerable uncertainty.

Thursday/Day 6 and Saturday/Day 8

From Thursday to Saturday, mid-level flow is forecast to become westerly over much of the northern U.S, with a front located from the central Plains eastward into the southern Great Lakes and Ohio Valley. Thunderstorm development will be possible each afternoon and evening near this front. Surface dewpoints in the 70s F to the south of the front, along with moderate to strong instability will make isolated severe thunderstorms possible each afternoon and evening. However, spatial uncertainty concerning any potential severe threat is considerable at this range.

..Broyles.. 08/08/2026

CLICK TO GET WUUS48 PTSD48 PRODUCT

← back to overview

 

Outlook for Wednesday, August 12

Outlook Images

any severe predictability too low

Note on Medium Range Outlooks

You are looking at an outlook that is part of the medium range forecast (the outlook for days 4-8). The most important thing to note is that lack of a risk does not mean zero risk. Generally speaking, confidence has to be pretty high for the Storm Prediction Center to have an outlook area this far into the future.

When no specific risk areas are shown, you might see one of these phrases:

If you bookmark this page, it will continue to update with each new outlook that is issued.

Days Covered in this Outlook

Day 4 Tuesday, August 11 predictability too low
Day 5 Wednesday, August 12 predictability too low
Day 6 Thursday, August 13 predictability too low
Day 7 Friday, August 14 predictability too low
Day 8 Saturday, August 15 predictability too low

Detailed Outlook

ZCZC SPCSWOD48 ALL ACUS48 KWNS 080855 SPC AC 080855

Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0355 AM CDT Sat Aug 08 2026

Valid 111200Z - 161200Z

DISCUSSION

Tuesday/Day 4 and Wednesday/Day 5

A broad cyclonic mid-level flow pattern is forecast from the upper Mississippi Valley into the Northeast on Tuesday and Wednesday. At the surface, a moist airmass is forecast to be in place over most of the eastern half of the nation with a quasi-stationary front located from the northern Plains east-southeastward into the southern Great Lakes. To the south of the front, surface dewpoints in the 70s F will likely result in the development of moderate to strong instability. Isolated to scattered thunderstorms appear likely to develop each afternoon in areas where low-level convergence becomes maximized. Outflow boundaries will be important in determining where the greatest convective coverage ends up being. In addition to the instability, moderate deep-layer shear is forecast over much of this moist airmass suggesting that an isolated wind-damage threat will be possible. However, the lack of any appreciable mid-level shortwave trough introduces considerable uncertainty.

Thursday/Day 6 and Saturday/Day 8

From Thursday to Saturday, mid-level flow is forecast to become westerly over much of the northern U.S, with a front located from the central Plains eastward into the southern Great Lakes and Ohio Valley. Thunderstorm development will be possible each afternoon and evening near this front. Surface dewpoints in the 70s F to the south of the front, along with moderate to strong instability will make isolated severe thunderstorms possible each afternoon and evening. However, spatial uncertainty concerning any potential severe threat is considerable at this range.

..Broyles.. 08/08/2026

CLICK TO GET WUUS48 PTSD48 PRODUCT

← back to overview

 

Outlook for Thursday, August 13

Outlook Images

any severe predictability too low

Note on Medium Range Outlooks

You are looking at an outlook that is part of the medium range forecast (the outlook for days 4-8). The most important thing to note is that lack of a risk does not mean zero risk. Generally speaking, confidence has to be pretty high for the Storm Prediction Center to have an outlook area this far into the future.

When no specific risk areas are shown, you might see one of these phrases:

If you bookmark this page, it will continue to update with each new outlook that is issued.

Days Covered in this Outlook

Day 4 Tuesday, August 11 predictability too low
Day 5 Wednesday, August 12 predictability too low
Day 6 Thursday, August 13 predictability too low
Day 7 Friday, August 14 predictability too low
Day 8 Saturday, August 15 predictability too low

Detailed Outlook

ZCZC SPCSWOD48 ALL ACUS48 KWNS 080855 SPC AC 080855

Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0355 AM CDT Sat Aug 08 2026

Valid 111200Z - 161200Z

DISCUSSION

Tuesday/Day 4 and Wednesday/Day 5

A broad cyclonic mid-level flow pattern is forecast from the upper Mississippi Valley into the Northeast on Tuesday and Wednesday. At the surface, a moist airmass is forecast to be in place over most of the eastern half of the nation with a quasi-stationary front located from the northern Plains east-southeastward into the southern Great Lakes. To the south of the front, surface dewpoints in the 70s F will likely result in the development of moderate to strong instability. Isolated to scattered thunderstorms appear likely to develop each afternoon in areas where low-level convergence becomes maximized. Outflow boundaries will be important in determining where the greatest convective coverage ends up being. In addition to the instability, moderate deep-layer shear is forecast over much of this moist airmass suggesting that an isolated wind-damage threat will be possible. However, the lack of any appreciable mid-level shortwave trough introduces considerable uncertainty.

Thursday/Day 6 and Saturday/Day 8

From Thursday to Saturday, mid-level flow is forecast to become westerly over much of the northern U.S, with a front located from the central Plains eastward into the southern Great Lakes and Ohio Valley. Thunderstorm development will be possible each afternoon and evening near this front. Surface dewpoints in the 70s F to the south of the front, along with moderate to strong instability will make isolated severe thunderstorms possible each afternoon and evening. However, spatial uncertainty concerning any potential severe threat is considerable at this range.

..Broyles.. 08/08/2026

CLICK TO GET WUUS48 PTSD48 PRODUCT

← back to overview

 

Outlook for Friday, August 14

Outlook Images

any severe predictability too low

Note on Medium Range Outlooks

You are looking at an outlook that is part of the medium range forecast (the outlook for days 4-8). The most important thing to note is that lack of a risk does not mean zero risk. Generally speaking, confidence has to be pretty high for the Storm Prediction Center to have an outlook area this far into the future.

When no specific risk areas are shown, you might see one of these phrases:

If you bookmark this page, it will continue to update with each new outlook that is issued.

Days Covered in this Outlook

Day 4 Tuesday, August 11 predictability too low
Day 5 Wednesday, August 12 predictability too low
Day 6 Thursday, August 13 predictability too low
Day 7 Friday, August 14 predictability too low
Day 8 Saturday, August 15 predictability too low

Detailed Outlook

ZCZC SPCSWOD48 ALL ACUS48 KWNS 080855 SPC AC 080855

Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0355 AM CDT Sat Aug 08 2026

Valid 111200Z - 161200Z

DISCUSSION

Tuesday/Day 4 and Wednesday/Day 5

A broad cyclonic mid-level flow pattern is forecast from the upper Mississippi Valley into the Northeast on Tuesday and Wednesday. At the surface, a moist airmass is forecast to be in place over most of the eastern half of the nation with a quasi-stationary front located from the northern Plains east-southeastward into the southern Great Lakes. To the south of the front, surface dewpoints in the 70s F will likely result in the development of moderate to strong instability. Isolated to scattered thunderstorms appear likely to develop each afternoon in areas where low-level convergence becomes maximized. Outflow boundaries will be important in determining where the greatest convective coverage ends up being. In addition to the instability, moderate deep-layer shear is forecast over much of this moist airmass suggesting that an isolated wind-damage threat will be possible. However, the lack of any appreciable mid-level shortwave trough introduces considerable uncertainty.

Thursday/Day 6 and Saturday/Day 8

From Thursday to Saturday, mid-level flow is forecast to become westerly over much of the northern U.S, with a front located from the central Plains eastward into the southern Great Lakes and Ohio Valley. Thunderstorm development will be possible each afternoon and evening near this front. Surface dewpoints in the 70s F to the south of the front, along with moderate to strong instability will make isolated severe thunderstorms possible each afternoon and evening. However, spatial uncertainty concerning any potential severe threat is considerable at this range.

..Broyles.. 08/08/2026

CLICK TO GET WUUS48 PTSD48 PRODUCT

← back to overview

 

Outlook for Saturday, August 15

Outlook Images

any severe predictability too low

Note on Medium Range Outlooks

You are looking at an outlook that is part of the medium range forecast (the outlook for days 4-8). The most important thing to note is that lack of a risk does not mean zero risk. Generally speaking, confidence has to be pretty high for the Storm Prediction Center to have an outlook area this far into the future.

When no specific risk areas are shown, you might see one of these phrases:

If you bookmark this page, it will continue to update with each new outlook that is issued.

Days Covered in this Outlook

Day 4 Tuesday, August 11 predictability too low
Day 5 Wednesday, August 12 predictability too low
Day 6 Thursday, August 13 predictability too low
Day 7 Friday, August 14 predictability too low
Day 8 Saturday, August 15 predictability too low

Detailed Outlook

ZCZC SPCSWOD48 ALL ACUS48 KWNS 080855 SPC AC 080855

Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0355 AM CDT Sat Aug 08 2026

Valid 111200Z - 161200Z

DISCUSSION

Tuesday/Day 4 and Wednesday/Day 5

A broad cyclonic mid-level flow pattern is forecast from the upper Mississippi Valley into the Northeast on Tuesday and Wednesday. At the surface, a moist airmass is forecast to be in place over most of the eastern half of the nation with a quasi-stationary front located from the northern Plains east-southeastward into the southern Great Lakes. To the south of the front, surface dewpoints in the 70s F will likely result in the development of moderate to strong instability. Isolated to scattered thunderstorms appear likely to develop each afternoon in areas where low-level convergence becomes maximized. Outflow boundaries will be important in determining where the greatest convective coverage ends up being. In addition to the instability, moderate deep-layer shear is forecast over much of this moist airmass suggesting that an isolated wind-damage threat will be possible. However, the lack of any appreciable mid-level shortwave trough introduces considerable uncertainty.

Thursday/Day 6 and Saturday/Day 8

From Thursday to Saturday, mid-level flow is forecast to become westerly over much of the northern U.S, with a front located from the central Plains eastward into the southern Great Lakes and Ohio Valley. Thunderstorm development will be possible each afternoon and evening near this front. Surface dewpoints in the 70s F to the south of the front, along with moderate to strong instability will make isolated severe thunderstorms possible each afternoon and evening. However, spatial uncertainty concerning any potential severe threat is considerable at this range.

..Broyles.. 08/08/2026

CLICK TO GET WUUS48 PTSD48 PRODUCT

← back to overview

 

National Risk Overview

Saturday, August 8
TORNADO: low
HAIL: 5%
WIND: 15%
Sunday, August 9
TORNADO: 2%
HAIL: 5%
WIND: 15%
Monday, August 10
ANY SEVERE: 15%
Tuesday, August 11
ANY SEVERE: predictability too low
Wednesday, August 12
ANY SEVERE: predictability too low
Thursday, August 13
ANY SEVERE: predictability too low
Friday, August 14
ANY SEVERE: predictability too low
Saturday, August 15
ANY SEVERE: predictability too low

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