Alert archive / Florida / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 45, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at Mar 31, 2021, 5:29 PM CDT for Okaloosa County, Santa Rosa County, Florida. It was in force for 46 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
- Mar 31, 2021, 5:29 PM CDT (22:29 UTC)
- Expired
- Mar 31, 2021, 6:15 PM CDT
- In force
- 46 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), 81 km from the middle of the area, began a volume at 22:32 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Mar 31, 3:12 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
The nearest sounding before it
Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 10.5 hours before the alert went out and 236 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
- 49 J/kg
- Mixed-layer CIN
- -76 J/kg
- Mixed-layer LCL
- 885 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 47 m²/s²
- 0-3 km storm-relative helicity
- 153 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
733 WUUS54 KMOB 312229 SVRMOB FLC091-113-312315- /O.NEW.KMOB.SV.W.0045.210331T2229Z-210331T2315Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Mobile AL 529 PM CDT Wed Mar 31 2021 The National Weather Service in Mobile has issued a * Severe Thunderstorm Warning for... Okaloosa County in northwestern Florida... East central Santa Rosa County in northwestern Florida... * Until 615 PM CDT. * At 529 PM CDT, severe thunderstorms were located along a line extending from 8 miles west of Laurel Hill to 3 miles northeast of Roeville, moving east at 35 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Crestview, Niceville, Baker, Laurel Hill, Point Baker and Roeville. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 3068 8709 3099 8669 3099 8639 3049 8640 TIME...MOT...LOC 2229Z 278DEG 30KT 3098 8659 3071 8694 HAIL...<.75IN WIND...60MPH $$ JLH
2 follow-up statements
823 WWUS54 KMOB 312250 SVSMOB Severe Weather Statement National Weather Service Mobile AL 550 PM CDT Wed Mar 31 2021 FLC113-312300- /O.CAN.KMOB.SV.W.0045.000000T0000Z-210331T2315Z/ Santa Rosa FL- 550 PM CDT Wed Mar 31 2021 ...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL SANTA ROSA COUNTY IS CANCELLED... The storms which prompted the warning have weakened. Therefore, the warning has been cancelled. A Severe Thunderstorm Watch remains in effect until 700 PM CDT for northwestern Florida. LAT...LON 3049 8640 3061 8680 3079 8679 3096 8639 TIME...MOT...LOC 2250Z 293DEG 31KT 3084 8642 3068 8677 $$ FLC091-312315- /O.CON.KMOB.SV.W.0045.000000T0000Z-210331T2315Z/ Okaloosa FL- 550 PM CDT Wed Mar 31 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM CDT FOR CENTRAL OKALOOSA COUNTY... At 550 PM CDT, severe thunderstorms were located along a line extending from 8 miles south of Laurel Hill to 9 miles southwest of Baker, moving southeast at 35 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... Crestview, Niceville and Baker. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 3049 8640 3061 8680 3079 8679 3096 8639 TIME...MOT...LOC 2250Z 293DEG 31KT 3084 8642 3068 8677 HAIL...<.75IN WIND...60MPH $$ JLH
887
WWUS54 KMOB 312308
SVSMOB
Severe Weather Statement
National Weather Service Mobile AL
608 PM CDT Wed Mar 31 2021
FLC091-312317-
/O.EXP.KMOB.SV.W.0045.000000T0000Z-210331T2315Z/
Okaloosa FL-
608 PM CDT Wed Mar 31 2021
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL OKALOOSA COUNTY WILL
EXPIRE AT 615 PM CDT...
The storms which prompted the warning have weakened below severe
limits, and have exited the warned area. Therefore, the warning will
be allowed to expire. However gusty winds are still possible with
these thunderstorms.
A Severe Thunderstorm Watch remains in effect until 700 PM CDT for
northwestern Florida.
LAT...LON 3049 8640 3061 8680 3079 8679 3096 8639
TIME...MOT...LOC 2307Z 278DEG 30KT 3082 8627 3066 8662
$$The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 31, 4:30 PM CDT | Special Weather Statement | MOB | Escambia, Santa Rosa | 45 min |
| Mar 31, 5:15 PM CDT | Special Weather Statement | MOB | Okaloosa | 45 min |
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.