Alert archive / Florida / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 56, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at Apr 28, 2011, 3:26 AM CDT for Okaloosa County, Florida. It was in force for 19 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
- Apr 28, 2011, 3:26 AM CDT (08:26 UTC)
- Expired
- Apr 28, 2011, 3:45 AM CDT
- In force
- 19 min
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
County Okaloosa County, FL
The radar
The Eglin Afb radar (KEVX), 57 km from the middle of the area, began a volume at 08:28 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, 8.4 hours before the alert went out and 211 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
- 3101 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 607 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 80 m²/s²
- 0-3 km storm-relative helicity
- 161 m²/s²
- Significant tornado parameter
- 1.9
- Supercell composite
- 13.8
The text
As transmitted, in the capitals the NWS used until 2016.
357
WUUS54 KMOB 280826
SVRMOB
FLC091-280845-
/O.NEW.KMOB.SV.W.0056.110428T0826Z-110428T0845Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
326 AM CDT THU APR 28 2011
THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHEASTERN OKALOOSA COUNTY IN NORTHWEST FLORIDA...
* UNTIL 345 AM CDT
* AT 323 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
OF 60 MPH. THIS STORM WAS LOCATED NEAR FORT WALTON BEACH...OR NEAR
CINCO BAYOU...AND MOVING EAST AT 40 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
VALPARAISO AND NICEVILLE AROUND 335 AM CDT...
SEMINOLE AROUND 340 AM CDT...
&&
LAT...LON 3039 8649 3040 8651 3039 8653 3040 8667
3045 8668 3057 8638 3046 8639 3046 8642
3049 8645 3043 8655 3044 8658 3042 8657
3041 8652 3043 8646 3041 8639 3039 8638
TIME...MOT...LOC 0826Z 248DEG 35KT 3040 8654
$$1 follow-up statement
393
WWUS54 KMOB 280848
SVSMOB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
348 AM CDT THU APR 28 2011
FLC091-280857-
/O.EXP.KMOB.SV.W.0056.000000T0000Z-110428T0845Z/
OKALOOSA FL-
348 AM CDT THU APR 28 2011
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN OKALOOSA COUNTY
HAS EXPIRED...
AT 345 AM CDT...THE STORM THAT PROMPTED THE WARNING HAD WEAKENED TO
BELOW SEVERE LIMITS...THUS THE WARNING HAS BEEN ALLOWED TO EXPIRE.
LAT...LON 3039 8649 3040 8651 3039 8653 3040 8667
3045 8668 3057 8638 3046 8639 3046 8642
3049 8645 3043 8655 3044 8658 3042 8657
3041 8652 3043 8646 3041 8639 3039 8638
TIME...MOT...LOC 0826Z 248DEG 35KT 3040 8654
$$Nearby
Severe Thunderstorm Warnings in Florida, 2011Every severe thunderstorm warning in 2011
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.