Alert archive / Florida / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 4, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at Feb 18, 2021, 1:49 AM CST for Okaloosa County, Santa Rosa County, Florida. It was in force for 41 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
- Feb 18, 2021, 1:49 AM CST (07:49 UTC)
- Expired
- Feb 18, 2021, 2:30 AM CST
- In force
- 41 min
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Okaloosa County, FL, Santa Rosa County, FL
The radar
The Eglin Afb radar (KEVX), 85 km from the middle of the area, began a volume at 07:51 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 |
|---|---|---|---|
| Feb 18, 1:49 AM CST | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 7.8 hours before the alert went out and 239 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1835 m above ground
- 0-6 km bulk shear
- 63 kt
- 0-1 km storm-relative helicity
- 238 m²/s²
- 0-3 km storm-relative helicity
- 546 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
179
WUUS54 KMOB 180749
SVRMOB
FLC091-113-180830-
/O.NEW.KMOB.SV.W.0004.210218T0749Z-210218T0830Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mobile AL
149 AM CST Thu Feb 18 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 230 AM CST.
* At 148 AM CST, severe thunderstorms were located along a line
extending from 3 miles southeast of Pea Ridge to near Oriole Beach
to 6 miles south of Pensacola Beach, moving east at 45 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Wright, Fort Walton Beach, Niceville, Destin, Eglin AFB, Pace,
Valparaiso, Gulf Breeze, Mary Esther, Bagdad, Ocean City, Lake
Lorraine, Oriole Beach, Navarre, Shalimar, Cinco Bayou, Navarre
Beach, Pea Ridge and Floridatown.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 800 AM CST for northwestern
Florida.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3031 8721 3032 8720 3037 8692 3033 8720
3042 8715 3060 8718 3065 8639 3046 8639
3047 8635 3039 8635 3040 8639 3036 8640
3039 8672
TIME...MOT...LOC 0748Z 253DEG 40KT 3055 8709 3038 8705 3024 8715
TORNADO...POSSIBLE
HAIL...0.75IN
WIND...60MPH
$$1 follow-up statement
931
WWUS54 KMOB 180806
SVSMOB
Severe Weather Statement
National Weather Service Mobile AL
206 AM CST Thu Feb 18 2021
FLC091-113-180830-
/O.CON.KMOB.SV.W.0004.000000T0000Z-210218T0830Z/
Okaloosa FL-Santa Rosa FL-
206 AM CST Thu Feb 18 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 AM CST
FOR SOUTHERN OKALOOSA AND SOUTHEASTERN SANTA ROSA COUNTIES...
At 205 AM CST, severe thunderstorms were located along a line
extending from 8 miles southeast of Roeville to 5 miles east of
Oriole Beach, moving northeast at 35 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Wright, Fort Walton Beach, Niceville, Destin, Eglin AFB, Valparaiso,
Mary Esther, Ocean City, Lake Lorraine, Navarre, Shalimar, Cinco
Bayou and Navarre Beach.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 800 AM CST for northwestern
Florida.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3035 8706 3035 8707 3061 8694 3065 8639
3037 8640 3039 8670 3038 8690 3037 8699
3036 8702 3035 8700 3035 8702 3036 8705
3035 8704 3033 8708
TIME...MOT...LOC 0805Z 224DEG 32KT 3061 8688 3035 8700
TORNADO...POSSIBLE
HAIL...0.75IN
WIND...60MPH
$$The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 18, 1:40 AM CST | 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.