Alert archive / Florida / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 4, NWS Miami, FL
NWS Miami, FL issued this severe thunderstorm warning at Apr 13, 2012, 7:35 PM EDT for Glades County, Hendry County, Florida. It was in force for 25 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 13, 2012, 7:35 PM EDT (23:35 UTC)
- Expired
- Apr 13, 2012, 8:00 PM EDT
- In force
- 25 min
- Issued by
- NWS Miami, FL
- Area
- Storm-based polygon
Counties Glades County, FL, Hendry County, FL
The radar
The Tampa radar (KTBW), 141 km from the middle of the area, began a volume at 23:38 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.
The nearest sounding before it
Tampa Bay, FL (KTBW), launched 12:00Z, 11.6 hours before the alert went out and 141 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
- 241 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 558 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 98 m²/s²
- 0-3 km storm-relative helicity
- 186 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.9
The text
As transmitted, in the capitals the NWS used until 2016.
484 WUUS52 KMFL 132335 SVRMFL FLC043-051-140000- /O.NEW.KMFL.SV.W.0004.120413T2335Z-120414T0000Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MIAMI FL 735 PM EDT FRI APR 13 2012 THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHWESTERN GLADES COUNTY IN SOUTH FLORIDA. NORTHWESTERN HENDRY COUNTY IN SOUTH FLORIDA. * UNTIL 800 PM EDT * AT 734 PM EDT...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 5 MILES EAST OF MUSE...AND MOVING EAST AT 10 MPH. * THE STORM WILL AFFECT... RURAL SOUTHERN GLADES COUNTY AND SURROUNDING COMMUNITIES. LAT...LON 2700 8125 2668 8111 2662 8157 2694 8157 TIME...MOT...LOC 2335Z 270DEG 12KT 2684 8142 $$ AK
2 follow-up statements
632 WWUS52 KMFL 132345 SVSMFL SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MIAMI FL 745 PM EDT FRI APR 13 2012 FLC043-051-140000- /O.CON.KMFL.SV.W.0004.000000T0000Z-120414T0000Z/ HENDRY FL-GLADES FL- 745 PM EDT FRI APR 13 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM EDT FOR SOUTHWESTERN GLADES AND NORTHWESTERN HENDRY COUNTIES... AT 743 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 6 MILES EAST OF MUSE...MOVING EAST AT 10 MPH. LAT...LON 2673 8157 2694 8157 2700 8125 2674 8114 TIME...MOT...LOC 2345Z 257DEG 7KT 2686 8141 $$ AK
138 WWUS52 KMFL 132352 SVSMFL SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MIAMI FL 752 PM EDT FRI APR 13 2012 FLC043-051-140002- /O.EXP.KMFL.SV.W.0004.000000T0000Z-120414T0000Z/ HENDRY FL-GLADES FL- 752 PM EDT FRI APR 13 2012 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN GLADES AND NORTHWESTERN HENDRY COUNTIES WILL EXPIRE AT 800 PM EDT... THE STORM THAT PROMPTED THE WARNING HAS WEAKENED AND THE WARNING WILL BE ALLOWED TO EXPIRE. HOWEVER...FREQUENT LIGHTNING...GUSTY WINDS TO 45 MPH...VERY HEAVY RAINFALL AND SMALL HAIL ARE STILL POSSIBLE. STAY TUNED TO NOAA WEATHER RADIO OR LOCAL MEDIA FOR THE LATEST UPDATES. LAT...LON 2673 8157 2694 8157 2700 8125 2674 8114 TIME...MOT...LOC 2352Z 257DEG 7KT 2686 8140 $$ AK
The office that day
Everything else NWS Miami, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 13, 5:28 AM EDT | Red Flag Warning | MFL | 8 hr | |
| Apr 13, 11:51 AM EDT | Special Weather Statement | MFL | Broward | 24 min |
| Apr 13, 12:00 PM EDT | Special Weather Statement | MFL | Broward, Palm Beach | 30 min |
| Apr 13, 12:31 PM EDT | Special Weather Statement | MFL | Broward, Palm Beach | 44 min |
| Apr 13, 1:20 PM EDT | Areal Flood Advisory | MFL | Broward | 115 min |
| Apr 13, 1:32 PM EDT | Special Weather Statement | MFL | Broward, Palm Beach | 28 min |
| Apr 13, 2:02 PM EDT | Special Weather Statement | MFL | Broward, Palm Beach | 28 min |
| Apr 13, 3:00 PM EDT | Areal Flood Advisory | MFL | Palm Beach | 2 hr |
| Apr 13, 3:42 PM EDT | Small Craft Advisory | MFL | 48 hr | |
| Apr 13, 7:31 PM EDT | Special Weather Statement | MFL | Glades | 44 min |
Nearby
Severe Thunderstorm Warnings in Florida, 2012Every severe thunderstorm warning in 2012
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.