Alert archive / Florida / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 127, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at May 12, 2021, 6:41 AM CDT for Okaloosa County, Santa Rosa County, Florida. It was in force for 79 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
- May 12, 2021, 6:41 AM CDT (11:41 UTC)
- Expired
- May 12, 2021, 8:00 AM CDT
- In force
- 79 min
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Okaloosa County, FL, Santa Rosa County, FL
The radar
The Eglin Afb radar (KEVX), 52 km from the middle of the area, began a volume at 11:41 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.
The nearest sounding before it
Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 11.7 hours before the alert went out and 206 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
- 1708 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 617 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 83 m²/s²
- 0-3 km storm-relative helicity
- 73 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
769
WUUS54 KMOB 121141
SVRMOB
FLC091-113-121300-
/O.NEW.KMOB.SV.W.0127.210512T1141Z-210512T1300Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mobile AL
641 AM CDT Wed May 12 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 800 AM CDT.
* At 641 AM CDT, severe thunderstorms were located along a line
extending from 5 miles west of Baker to 5 miles southeast of Oriole
Beach, moving northeast at 30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Wright, Fort Walton Beach, Niceville, Destin, Eglin AFB,
Valparaiso, Mary Esther, Ocean City, Lake Lorraine, Navarre,
Shalimar, Cinco Bayou and Navarre Beach.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3082 8685 3068 8639 3046 8639 3048 8633
3047 8630 3048 8628 3040 8628 3039 8629
3040 8629 3040 8630 3042 8630 3042 8631
3038 8633 3040 8639 3028 8639 3029 8680
3026 8694
TIME...MOT...LOC 1141Z 240DEG 25KT 3077 8676 3033 8701
HAIL...<.75IN
WIND...60MPH
$$1 follow-up statement
250
WWUS54 KMOB 121241
SVSMOB
Severe Weather Statement
National Weather Service Mobile AL
741 AM CDT Wed May 12 2021
FLC113-121249-
/O.CAN.KMOB.SV.W.0127.000000T0000Z-210512T1300Z/
Santa Rosa FL-
741 AM CDT Wed May 12 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTAL SANTA ROSA COUNTY
IS CANCELLED...
The storms which prompted the warning have moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 3029 8680 3056 8645 3065 8639 3046 8639
3048 8633 3047 8630 3048 8628 3040 8628
3039 8629 3042 8630 3042 8632 3038 8633
3040 8639 3029 8639
TIME...MOT...LOC 1239Z 314DEG 24KT 3054 8631 3024 8660
$$
FLC091-121300-
/O.CON.KMOB.SV.W.0127.000000T0000Z-210512T1300Z/
Okaloosa FL-
741 AM CDT Wed May 12 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 AM CDT
FOR SOUTHEASTERN OKALOOSA COUNTY...
At 739 AM CDT, severe thunderstorms were located along a line
extending from 4 miles southwest of Eglin Air Force Base to 12 miles
southwest of Destin, moving southeast at 25 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Fort Walton Beach, Niceville, Destin, Eglin AFB, Valparaiso, Lake
Lorraine, Shalimar and Cinco Bayou.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3029 8680 3056 8645 3065 8639 3046 8639
3048 8633 3047 8630 3048 8628 3040 8628
3039 8629 3042 8630 3042 8632 3038 8633
3040 8639 3029 8639
TIME...MOT...LOC 1239Z 314DEG 24KT 3054 8631 3024 8660
HAIL...<.75IN
WIND...60MPH
$$The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 12, 5:01 AM CDT | Areal Flood Advisory | MOB | Escambia | 3 hr |
| May 12, 5:04 AM CDT | Special Weather Statement | MOB | Escambia, Santa Rosa | 86 min |
| May 12, 6:11 AM CDT | Severe Thunderstorm Warning | MOB | Escambia, Santa Rosa | 49 min |
| May 12, 6:21 AM CDT | Severe Thunderstorm Warning | MOB | Escambia, Santa Rosa | 69 min |
| May 12, 6:29 AM CDT | Severe Thunderstorm Warning | MOB | Okaloosa | 64 min |
| May 12, 6:52 AM CDT | Areal Flood Advisory | MOB | Escambia, Okaloosa, Santa Rosa | 3 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.