Alert archive / Florida / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 116, NWS Mobile, AL

August 17, 2026Okaloosa County, Florida

NWS Mobile, AL issued this severe thunderstorm warning at Aug 17, 2026, 4:37 PM CDT for Okaloosa County, Florida. It was in force for 53 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 17, 2026, 4:37 PM CDT (21:37 UTC)
Expired
Aug 17, 2026, 5:30 PM CDT
In force
53 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

County Okaloosa County, FL

The radar

The Eglin Afb radar (KEVX), 61 km from the middle of the area, began a volume at 21:40 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 9.6 hours before the alert went out and 279 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Birmingham, AL at 12:00Z on 2026-08-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2155 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Birmingham, AL at 12:00Z on 2026-08-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -57 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
2155 J/kg
Mixed-layer CIN
-59 J/kg
Mixed-layer LCL
1271 m above ground
0-6 km bulk shear
4 kt
0-1 km storm-relative helicity
-57 m²/s²
0-3 km storm-relative helicity
-1 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

454 
WUUS54 KMOB 172137
SVRMOB
FLC091-172230-
/O.NEW.KMOB.SV.W.0116.260817T2137Z-260817T2230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mobile AL
437 PM CDT Mon Aug 17 2026

The National Weather Service in Mobile has issued a

* Severe Thunderstorm Warning for...
  East central Okaloosa County in northwestern Florida...

* Until 530 PM CDT.

* At 437 PM CDT, a severe thunderstorm was located 4 miles southeast
  of Crestview, and is nearly stationary.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Crestview.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3059 8668 3082 8659 3082 8639 3056 8639
TIME...MOT...LOC 2137Z 014DEG 3KT 3070 8653 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

MM
1 follow-up statement
753 
WWUS54 KMOB 172220
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
520 PM CDT Mon Aug 17 2026

FLC091-172230-
/O.EXP.KMOB.SV.W.0116.000000T0000Z-260817T2230Z/
Okaloosa FL-
520 PM CDT Mon Aug 17 2026

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL OKALOOSA COUNTY
WILL EXPIRE AT 530 PM CDT...

The severe thunderstorm which prompted the warning has weakened. 
Therefore, the warning will be allowed to expire.

LAT...LON 3059 8668 3082 8659 3082 8639 3056 8639
TIME...MOT...LOC 2220Z 014DEG 3KT 3067 8654 

$$

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Mobile, AL wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 17, 12:15 PM CDT, 4 hours 22 minutes earlier. Its key messages:

  • Updated at 1154 AM CDT Mon Aug 17 2026
  • A Heat Advisory remains in effect through this evening for high heat indices up to 112. A new Advisory has been issued for Tuesday in addition to an Extreme Heat Warning for coastal areas for high heat indices up to 115.
  • A moderate risk of rip currents will persist over the next couple days.
Area forecast discussion, Aug 17, 12:15 PM CDT, 4 hours 22 minutes before
Area Forecast Discussion
National Weather Service Mobile AL
Issued by National Weather Service New Orleans LA
1215 PM CDT Mon Aug 17 2026

...New DISCUSSION, AVIATION, MARINE...

.KEY MESSAGES...
Updated at 1154 AM CDT Mon Aug 17 2026

- A Heat Advisory remains in effect through this evening for high
  heat indices up to 112. A new Advisory has been issued for
  Tuesday in addition to an Extreme Heat Warning for coastal
  areas for high heat indices up to 115.

- A moderate risk of rip currents will persist over the next
  couple days.

.DISCUSSION...
Issued at 1154 AM CDT Mon Aug 17 2026

An upper level ridge to our west will continue to dominate the
forecast, bringing very hot conditions across the area. In
addition to the heat, there is plenty of moisture available with
PWs up around the 2 inch mark. This helps keep isolated to
scattered convection chances around each day this week. With dry
air above the moisture at the surface, it would not be too
surprising to see a strong storm or two with this convection.
Locally strong to damaging wind gusts would be the main concern,
especially if we see boundary collisions.

The heat will continue to be the main focus of the forecast. A Heat
Advisory remains in effect through 8pm this evening. A new Heat
Advisory was issued for tomorrow along with an Extreme Heat Warning
for areas along the coast and around the Bays. Heat indices in the
areas of the warning may get up to ~115F. Heat headlines are likely
to last through late this week with afternoon MaxTs reaching the
upper 90s, possibly evening touching 100 in some spots along, with
dew points in the low to mid 70s and even upper 70s closer to the
coast.These values will lead to heat indices of 108-112 most days,
with some spots reaching up to 115. Overnight lows will not bring a
lot in the way of relief from the heat as they remain in the mid to
upper 70s, possibly not even dropping below 80 for coastal areas.
Know the signs of heat illnesses and ensure to stay hydrated and
take breaks if outdoors.

We may finally start to see some relief from this heat to end the
week and into the weekend as the ridge to our west begins to break
down. Models even hint at a deepening trough trying to make its way
down here which could bring increased rain chances, adding to the
potential heat relief.

&&

.BEACH FORECAST...

The rip current risk will remain moderate over the next couple days
for Florida beaches. The rip current risk for Alabama beaches
will also be moderate beginning tomorrow and lasting into midweek.
Surf heights will generally remain low through the end of the
week, areas that see convection may briefly see higher heights.

&&

.AVIATION...
(18Z TAFS)
Issued at 1154 AM CDT Mon Aug 17 2026

VFR conditions at all terminals this afternoon and this should
persist through the forecast period. A few isolated showers and
thunderstorms will be possible into the afternoon which may briefly
bring MVFR conditions.

&&

.MARINE...
Issued at 1154 AM CDT Mon Aug 17 2026

Fairly benign over the marine waters this week with light to
moderate southwest to westerly flow. There will be isolated to
scattered chances of thunderstorms each morning which could bring
locally higher winds and seas. Outside of convection, no impacts
are expected.

&&

.MOB WATCHES/WARNINGS/ADVISORIES...
AL...Heat Advisory until 8 PM CDT this evening for ALZ051>060-261>266.

     Heat Advisory from 11 AM to 8 PM CDT Tuesday for ALZ051>060-261-
     262.

     Extreme Heat Warning from 11 AM to 8 PM CDT Tuesday for
     ALZ263>266.

FL...Heat Advisory until 8 PM CDT this evening for FLZ201>206.

     Heat Advisory from 11 AM to 8 PM CDT Tuesday for FLZ201-203-205.

     Extreme Heat Warning from 11 AM to 8 PM CDT Tuesday for FLZ202-
     204-206.

MS...Heat Advisory until 8 PM CDT this evening for MSZ067-075-076-078-
     079.

     Heat Advisory from 11 AM to 8 PM CDT Tuesday for MSZ067-075-076-
     078-079.

GM...None.
&&

In the hours before

Special weather statement, Aug 17, 3:49 PM CDT, 48 minutes before
Special Weather Statement
National Weather Service Mobile AL
349 PM CDT Mon Aug 17 2026

ALZ263-265-172130-
Mobile Coastal AL-Mobile Central AL-
349 PM CDT Mon Aug 17 2026

...STRONG THUNDERSTORMS WILL IMPACT SOUTHWESTERN MOBILE COUNTY
THROUGH 430 PM CDT...

At 349 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Prichard to near Tanner Williams. Movement
was south at 15 mph.

HAZARD...Wind gusts up to 50 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Midtown Mobile, Downtown Mobile, Prichard, Tillmans Corner, Theodore,
Grand Bay, Bayou La Batre, Coden, I10 And I65, and Mobile Regional
Airport.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3039 8840 3072 8841 3075 8798 3074 8798
      3074 8800 3072 8800 3072 8798 3068 8800
      3070 8798 3068 8799 3068 8798 3037 8806
TIME...MOT...LOC 2049Z 349DEG 13KT 3071 8810 3070 8840

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH

MM
Special weather statement, Aug 17, 4:01 PM CDT, 36 minutes before
Special Weather Statement
National Weather Service Mobile AL
401 PM CDT Mon Aug 17 2026

ALZ060-172145-
Covington AL-
401 PM CDT Mon Aug 17 2026

...A STRONG THUNDERSTORM WILL IMPACT EAST CENTRAL COVINGTON COUNTY
THROUGH 445 PM CDT...

At 401 PM CDT, Doppler radar was tracking a strong thunderstorm over
Opp, moving south at 10 mph.

HAZARD...Wind gusts up to 50 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Opp.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3114 8644 3139 8641 3140 8620 3113 8619
TIME...MOT...LOC 2101Z 355DEG 10KT 3129 8630

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH

MM
Special weather statement, Aug 17, 4:05 PM CDT, 32 minutes before
Special Weather Statement
National Weather Service Mobile AL
405 PM CDT Mon Aug 17 2026

FLZ203-205-172145-
Okaloosa Inland FL-Santa Rosa Inland FL-
405 PM CDT Mon Aug 17 2026

...A STRONG THUNDERSTORM WILL IMPACT SOUTHWESTERN OKALOOSA AND EAST
CENTRAL SANTA ROSA COUNTIES THROUGH 445 PM CDT...

At 405 PM CDT, Doppler radar was tracking a strong thunderstorm 9
miles southwest of Baker, or 13 miles southwest of Crestview, moving
southeast at 5 mph.

HAZARD...Wind gusts up to 50 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

This storm will remain over mainly rural areas of southwestern
Okaloosa and east central Santa Rosa Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3068 8693 3079 8673 3061 8652 3045 8676
TIME...MOT...LOC 2105Z 316DEG 6KT 3068 8678

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH

MM
Special weather statement, Aug 17, 4:08 PM CDT, 29 minutes before
Special Weather Statement
National Weather Service Mobile AL
408 PM CDT Mon Aug 17 2026

ALZ052-MSZ067-172200-
Washington AL-Wayne MS-
408 PM CDT Mon Aug 17 2026

...STRONG THUNDERSTORMS WILL IMPACT NORTHWESTERN WASHINGTON AND
SOUTHERN WAYNE COUNTIES THROUGH 500 PM CDT...

At 408 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 7 miles west of Clara to 4 miles northeast of
Buckatunna. Movement was southeast at 15 mph.

HAZARD...Wind gusts up to 50 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Waynesboro, Clara, State Line, and Buckatunna.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3168 8843 3143 8824 3143 8888 3167 8894
TIME...MOT...LOC 2108Z 308DEG 11KT 3158 8883 3159 8847

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH

MM
Local storm report, Aug 17, 4:14 PM CDT, 23 minutes before
Preliminary Local Storm Report
National Weather Service Mobile AL
414 PM CDT Mon Aug 17 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0345 PM     Marine Tstm Wind Brookley Field          30.64N 88.07W
08/17/2026  M40 MPH          Mobile             AL   ASOS

            Wind gust to 35 knots.

&&
Special weather statement, Aug 17, 4:32 PM CDT, 5 minutes before
Special Weather Statement
National Weather Service Mobile AL
432 PM CDT Mon Aug 17 2026

ALZ263-265-172215-
Mobile Coastal AL-Mobile Central AL-
432 PM CDT Mon Aug 17 2026

...STRONG THUNDERSTORMS WILL IMPACT SOUTHWESTERN MOBILE COUNTY
THROUGH 515 PM CDT...

At 432 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 3 miles southeast of Big Point to Grand Bay to
4 miles south of Theodore. Movement was southwest at 10 mph.

HAZARD...Wind gusts up to 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Tillmans Corner, Theodore, Grand Bay, Bayou La Batre, Dauphin Island,
Coden, and Alabama Port.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3022 8838 3032 8840 3035 8839 3038 8841
      3039 8841 3038 8840 3062 8841 3061 8811
      3054 8806 3022 8807
TIME...MOT...LOC 2132Z 038DEG 8KT 3055 8845 3046 8834 3048 8820

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

MM

The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 17, 11:48 AM CDTHeat AdvisoryMOBEscambia, Okaloosa, Santa Rosa32 hr
Aug 17, 11:48 AM CDTExtreme Heat WarningMOBEscambia, Okaloosa, Santa Rosa32 hr
Aug 17, 3:37 PM CDTSpecial Weather StatementMOBSanta Rosa38 min
Aug 17, 3:55 PM CDTSevere Thunderstorm WarningMOBSanta Rosa50 min
Aug 17, 4:05 PM CDTSpecial Weather StatementMOBOkaloosa40 min
Aug 17, 4:12 PM CDTSevere Thunderstorm WarningMOBEscambia48 min
Aug 17, 4:14 PM CDTSevere Thunderstorm WarningMOBOkaloosa, Santa Rosa27 min
Aug 17, 4:42 PM CDTSpecial Weather StatementMOBEscambia48 min
Aug 17, 4:52 PM CDTSevere Thunderstorm WarningMOBEscambia27 min

Nearby

Severe Thunderstorm Warnings in Florida, 2026Every severe thunderstorm warning in 2026

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.