Severe Weather Alerts

Florida

Heat Advisory (Moderate)

Coastal Charlotte; Coastal Citrus; Coastal Hernando; Coastal Hillsborough; Coastal Lee; Coastal Manatee; Coastal Pasco; Coastal Sarasota; DeSoto; Hardee; Highlands; Inland Charlotte; Inland Citrus; Inland Hernando; Inland Hillsborough; Inland Lee; Inland Manatee; Inland Pasco; Inland Sarasota; Pinellas; Polk; Sumter

* WHAT...Heat index values up to 109 expected.

* WHERE...Portions of southwest and west central Florida.

* WHEN...From noon today to 7 PM EDT this evening.

* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

Start Time

8/13/2026 6:45 AM

End Time

8/13/2026 6:00 PM

Iowa

Flood Watch (Severe)

Benton; Cedar; Clinton; Iowa; Jackson; Johnson; Jones; Linn; Muscatine; Scott

* WHAT...Flash flooding caused by excessive rainfall continues to be
possible.

* WHERE...Portions of Illinois, including the following areas,
Bureau, Carroll, Henry IL, Putnam, Rock Island and Whiteside and
east central Iowa, including the following areas, Benton, Cedar,
Clinton, Iowa, Jackson, Johnson, Jones, Linn, Muscatine and Scott.

* WHEN...From this evening through Friday afternoon.

* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Flooding may occur in poor drainage and urban areas.

* ADDITIONAL DETAILS...
- A large system of thunderstorms with heavy rainfall moving across
the area this morning and midday, followed by more rounds of
storms tonight into Friday morning may produce several inches of
rainfall and eventual flooding problems.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.

Start Time

8/13/2026 2:43 AM

End Time

8/14/2026 2:45 AM

Severe Thunderstorm Watch (Severe)

Benton, IA; Cedar, IA; Des Moines, IA; Henry, IA; Iowa, IA; Jefferson, IA; Johnson, IA; Jones, IA; Keokuk, IA; Lee, IA; Linn, IA; Louisa, IA; Muscatine, IA; Van Buren, IA; Washington, IA

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH
581 IN EFFECT UNTIL 11 AM CDT THIS MORNING FOR THE FOLLOWING
AREAS

IN IOWA THIS WATCH INCLUDES 15 COUNTIES

IN EAST CENTRAL IOWA

BENTON CEDAR IOWA
JOHNSON JONES LINN
MUSCATINE

IN SOUTHEAST IOWA

DES MOINES HENRY IA JEFFERSON
KEOKUK LEE LOUISA
VAN BUREN WASHINGTON

THIS INCLUDES THE CITIES OF ANAMOSA, BURLINGTON, CEDAR RAPIDS,
FAIRFIELD, IOWA CITY, KEOKUK, KEOSAUQUA, MARENGO, MOUNT PLEASANT,
MUSCATINE, SIGOURNEY, TIPTON, VINTON, WAPELLO, AND WASHINGTON.

Start Time

8/13/2026 5:47 AM

End Time

8/13/2026 11:00 AM

Wisconsin

Special Weather Statement (Moderate)

Columbia; Dane; Dodge; Fond Du Lac; Green; Green Lake; Iowa; Jefferson; Kenosha; Lafayette; Marquette; Milwaukee; Ozaukee; Racine; Rock; Sauk; Sheboygan; Walworth; Washington; Waukesha

Fog will be locally dense in pockets over southern Wisconsin from
now through the mid morning. Visibility may be suddenly reduced
to 1/4 mile or less in these dense pockets. Caution is advised for
the morning commute.

At this time the need for a Dense Fog Advisory will be monitored
using surface observation trends, as mid to high level cloud
cover is spreading in from the west. This cloud cover may allow
for some mild improvements in visibility if it holds together.

Start Time

8/13/2026 4:17 AM

End Time

8/13/2026 9:15 AM

Severe Weather

4 active weather alerts