Alert archive / Florida / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 64, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at Apr 10, 2021, 7:35 AM CDT for Okaloosa County, Santa Rosa County, Florida. It was in force for 41 min. 4 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Apr 10, 2021, 7:35 AM CDT (12:35 UTC)
- Expired
- Apr 10, 2021, 8:16 AM CDT
- In force
- 41 min
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 70.0 mph
Counties Okaloosa County, FL, Santa Rosa County, FL
The radar
The Eglin Afb radar (KEVX), 79 km from the middle of the area, began a volume at 12:39 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 10, 7:40 AM CDT | MARINE TSTM WIND 43 | 5 Ene Oriole Beach, FL | MARINE THUNDERSTORM WIND GUST OF 43 MPH AT THE WEATHERSTEM STATION NEAR ORIOLE BEACH. |
| Apr 10, 7:50 AM CDT | TSTM WND GST 60 | 2 Sse Navarre, FL | WEATHERSTEM STATION IN NAVARRE GUSTED TO 60 MPH. |
| Apr 10, 7:51 AM CDT | TSTM WND GST 60 | Mary Esther, FL | AWOS STATION (KHRT) ON HURLBURT FIELD GUSTED TO 60 MPH. |
| Apr 10, 8:09 AM CDT | MARINE TSTM WIND 41 | 2 E Destin, FL | MARINE THUNDERSTORM WIND GUST OF 41 MPH IN DESTIN. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 10, 2:30 AM CDT | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 0.6 hours before the alert went out and 232 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.
- Mixed-layer CAPE
- 13 J/kg
- Mixed-layer CIN
- -541 J/kg
- Mixed-layer LCL
- 1046 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 276 m²/s²
- 0-3 km storm-relative helicity
- 231 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
297
WUUS54 KMOB 101235
SVRMOB
FLC091-113-101330-
/O.NEW.KMOB.SV.W.0064.210410T1235Z-210410T1330Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mobile AL
735 AM CDT Sat Apr 10 2021
The National Weather Service in Mobile has issued a
* Severe Thunderstorm Warning for...
Southern Okaloosa County in northwestern Florida...
Southeastern Santa Rosa County in northwestern Florida...
* Until 830 AM CDT.
* At 733 AM CDT, severe thunderstorms were located along a line
extending from 7 miles east of Roeville to 3 miles southeast of
Pensacola Beach, moving east at 50 mph.
HAZARD...70 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect considerable
tree damage. Wind damage is also likely to mobile homes,
roofs, and outbuildings.
* Locations impacted include...
Wright, Fort Walton Beach, Niceville, Destin, Eglin AFB, Milton,
Valparaiso, Gulf Breeze, Mary Esther, Bagdad, Ocean City, Lake
Lorraine, Oriole Beach, Navarre, Shalimar, Cinco Bayou, Navarre
Beach and Roeville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 AM CDT for northwestern
Florida.
For your protection move to an interior room on the lowest floor of a
building.
Prepare immediately for large hail and damaging winds. People outside
should move immediately to shelter inside a strong building. Stay
away from windows.
&&
LAT...LON 3022 8725 3032 8720 3037 8692 3033 8718
3033 8719 3076 8698 3073 8639 3046 8639
3048 8628 3039 8629 3042 8631 3038 8633
3040 8639 3028 8639 3029 8680
TIME...MOT...LOC 1233Z 263DEG 45KT 3071 8687 3030 8709
HAIL...1.00IN
WIND...70MPH
$$2 follow-up statements
625
WWUS54 KMOB 101254
SVSMOB
Severe Weather Statement
National Weather Service Mobile AL
754 AM CDT Sat Apr 10 2021
FLC113-101303-
/O.CAN.KMOB.SV.W.0064.000000T0000Z-210410T1330Z/
Santa Rosa FL-
754 AM CDT Sat Apr 10 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN SANTA ROSA COUNTY
IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 1000 AM CDT for northwestern
Florida.
LAT...LON 3032 8680 3038 8681 3039 8680 3039 8681
3075 8670 3073 8639 3046 8639 3048 8628
3039 8629 3042 8631 3038 8633 3040 8639
3030 8640
TIME...MOT...LOC 1253Z 259DEG 59KT 3073 8657 3038 8671
$$
FLC091-101330-
/O.CON.KMOB.SV.W.0064.000000T0000Z-210410T1330Z/
Okaloosa FL-
754 AM CDT Sat Apr 10 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 AM CDT
FOR SOUTHERN OKALOOSA COUNTY...
At 753 AM CDT, severe thunderstorms were located along a line
extending from Crestview to 3 miles southwest of Mary Esther, moving
east at 60 mph.
HAZARD...70 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect considerable
tree damage. Wind damage is also likely to mobile homes,
roofs, and outbuildings.
Locations impacted include...
Wright, Fort Walton Beach, Niceville, Destin, Eglin AFB, Valparaiso,
Mary Esther, Ocean City, Lake Lorraine, Shalimar and Cinco Bayou.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 AM CDT for northwestern
Florida.
For your protection move to an interior room on the lowest floor of a
building.
Prepare immediately for large hail and damaging winds. People outside
should move to a shelter, inside a strong building and away from
windows.
&&
LAT...LON 3032 8680 3038 8681 3039 8680 3039 8681
3075 8670 3073 8639 3046 8639 3048 8628
3039 8629 3042 8631 3038 8633 3040 8639
3030 8640
TIME...MOT...LOC 1253Z 259DEG 59KT 3073 8657 3038 8671
HAIL...1.00IN
WIND...70MPH
$$501
WWUS54 KMOB 101316
SVSMOB
Severe Weather Statement
National Weather Service Mobile AL
816 AM CDT Sat Apr 10 2021
FLC091-101325-
/O.CAN.KMOB.SV.W.0064.000000T0000Z-210410T1330Z/
Okaloosa FL-
816 AM CDT Sat Apr 10 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN OKALOOSA COUNTY IS
CANCELLED...
The storms which prompted the warning have moved out of the area.
Therefore, the warning has been cancelled. However heavy rain is
still possible with these thunderstorms.
A Tornado Watch remains in effect until 1000 AM CDT for northwestern
Florida.
LAT...LON 3032 8680 3038 8681 3039 8680 3039 8681
3075 8670 3073 8639 3046 8639 3048 8628
3039 8629 3042 8631 3038 8633 3040 8639
3030 8640
TIME...MOT...LOC 1314Z 263DEG 45KT 3076 8626 3041 8640
$$The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 10, 2:50 AM CDT | Severe Thunderstorm Warning | MOB | Escambia | 55 min |
| Apr 10, 2:59 AM CDT | Severe Thunderstorm Warning | MOB | Escambia | 61 min |
| Apr 10, 3:46 AM CDT | Special Weather Statement | MOB | Escambia, Santa Rosa | 44 min |
| Apr 10, 3:53 AM CDT | Severe Thunderstorm Warning | MOB | Escambia, Santa Rosa | 67 min |
| Apr 10, 4:07 AM CDT | Areal Flood Advisory | MOB | Escambia | 3 hr |
| Apr 10, 4:30 AM CDT | Special Weather Statement | MOB | Okaloosa | 45 min |
| Apr 10, 4:53 AM CDT | Severe Thunderstorm Warning | MOB | Escambia, Okaloosa, Santa Rosa | 52 min |
| Apr 10, 5:10 AM CDT | Areal Flood Advisory | MOB | Escambia, Santa Rosa | 3 hr |
| Apr 10, 5:40 AM CDT | Flash Flood Warning | MOB | Escambia, Santa Rosa | 6 hr |
| Apr 10, 5:44 AM CDT | Severe Thunderstorm Warning | MOB | Escambia, Okaloosa, Santa Rosa | 61 min |
| Apr 10, 5:57 AM CDT | Tornado Warning | MOB | Okaloosa | 33 min |
| Apr 10, 6:18 AM CDT | Tornado Warning | MOB | Okaloosa | 12 min |
| Apr 10, 6:20 AM CDT | Severe Thunderstorm Warning | MOB | Escambia | 40 min |
| Apr 10, 6:52 AM CDT | Severe Thunderstorm Warning | MOB | Escambia, Okaloosa, Santa Rosa | 53 min |
| Apr 10, 7:39 AM CDT | Flash Flood Warning | MOB | Okaloosa | 5 hr |
| Apr 10, 9:38 AM CDT | River Flood Warning | MOB | Okaloosa | 11 hr |
Nearby
Severe Thunderstorm Warnings in Florida, 2021Every severe thunderstorm warning in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.