Alert archive / Florida / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 87, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at Jun 7, 2011, 3:38 PM CDT for Okaloosa County, Florida. It was in force for 21 min. 1 report 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
- Jun 7, 2011, 3:38 PM CDT (20:38 UTC)
- Expired
- Jun 7, 2011, 3:59 PM CDT
- In force
- 21 min
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
County Okaloosa County, FL
The radar
The Eglin Afb radar (KEVX), 76 km from the middle of the area, began a volume at 20:38 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 |
|---|---|---|---|
| Jun 7, 4:05 PM CDT | HAIL 0.88 | 1 S Crestview, FL | SKYWARN SPOTTER REPORTED NICKEL SIZED HAIL SOUTH SIDE OF CRESTVIEW...NEAR JUNCTURE OF I-10 AND HIGHWAY 85 |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Birmingham, AL (KBMX), launched 12:00Z, 8.6 hours before the alert went out and 267 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
- 772 J/kg
- Mixed-layer CIN
- -166 J/kg
- Mixed-layer LCL
- 1496 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- -40 m²/s²
- 0-3 km storm-relative helicity
- -54 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
456 WUUS54 KMOB 072038 SVRMOB FLC091-072115- /O.NEW.KMOB.SV.W.0087.110607T2038Z-110607T2115Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOBILE AL 338 PM CDT TUE JUN 7 2011 THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL OKALOOSA COUNTY IN NORTHWEST FLORIDA... THIS INCLUDES THE CITY OF CRESTVIEW... * UNTIL 415 PM CDT * AT 335 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR CRESTVIEW...OR 16 MILES SOUTHWEST OF LAUREL HILL...AND MOVING NORTHWEST AT 20 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... BAKER AND GALLIVER AROUND 345 PM CDT... NUBBIN RIDGE AND CANNON TOWN AROUND 350 PM CDT... THIS INCLUDES INTERSTATE 10 BETWEEN MILE MARKERS 47 AND 57. PRECAUTIONARY/PREPAREDNESS ACTIONS... IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY! LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. && LAT...LON 3073 8677 3097 8677 3082 8650 3066 8659 TIME...MOT...LOC 2038Z 116DEG 16KT 3078 8664 $$
1 follow-up statement
356 WWUS54 KMOB 072059 SVSMOB SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 359 PM CDT TUE JUN 7 2011 FLC091-072109- /O.CAN.KMOB.SV.W.0087.000000T0000Z-110607T2115Z/ OKALOOSA FL- 359 PM CDT TUE JUN 7 2011 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN OKALOOSA COUNTY IS CANCELLED... LAT...LON 3073 8677 3097 8677 3082 8650 3066 8659 TIME...MOT...LOC 2059Z 116DEG 16KT 3082 8674 $$
The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 7, 2:57 PM CDT | Severe Thunderstorm Warning | MOB | Santa Rosa | 33 min |
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.