Alert archive / Florida / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 142, NWS Miami, FL
NWS Miami, FL issued this severe thunderstorm warning at Sep 4, 2012, 7:05 PM EDT for Palm Beach 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
- Sep 4, 2012, 7:05 PM EDT (23:05 UTC)
- Expired
- Sep 4, 2012, 7:30 PM EDT
- In force
- 25 min
- Issued by
- NWS Miami, FL
- Area
- Storm-based polygon
County Palm Beach County, FL
The radar
The Miami radar (KAMX), 118 km from the middle of the area, began a volume at 23:07 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
Miami, FL (KMFL), launched 12:00Z, 11.1 hours before the alert went out and 93 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
- 2198 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 759 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- -5 m²/s²
- 0-3 km storm-relative helicity
- 61 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 2.9
The text
As transmitted, in the capitals the NWS used until 2016.
687 WUUS52 KMFL 042305 SVRMFL FLC099-042330- /O.NEW.KMFL.SV.W.0142.120904T2305Z-120904T2330Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MIAMI FL 705 PM EDT TUE SEP 4 2012 THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL PALM BEACH COUNTY IN SOUTH FLORIDA. * UNTIL 730 PM EDT * AT 705 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 8 MILES SOUTHWEST OF WELLINGTON...AND MOVING NORTHEAST AT 15 MPH. * THE STORM WILL AFFECT... RURAL CENTRAL PALM BEACH COUNTY AND SURROUNDING COMMUNITIES. PRECAUTIONARY/PREPAREDNESS ACTIONS... SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 58 MPH AND OR LARGE HAIL. FREQUENT TO EXCESSIVE LIGHTNING AND HEAVY RAINFALL IS ALSO POSSIBLE. IF THE STORM APPROACHES YOUR LOCATION, SEEK SHELTER IN AN ENCLOSED BUILDING ON THE LOWEST FLOOR AND STAY AWAY FROM WINDOWS. && LAT...LON 2680 8021 2663 8004 2647 8032 2659 8044 TIME...MOT...LOC 2306Z 230DEG 14KT 2657 8031 $$ AK
2 follow-up statements
911 WWUS52 KMFL 042311 SVSMFL SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MIAMI FL 711 PM EDT TUE SEP 4 2012 FLC099-042330- /O.CON.KMFL.SV.W.0142.000000T0000Z-120904T2330Z/ PALM BEACH FL- 711 PM EDT TUE SEP 4 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EDT FOR EAST CENTRAL PALM BEACH COUNTY... AT 710 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. THIS STORM WAS LOCATED 6 MILES SOUTH OF WELLINGTON...MOVING NORTHEAST AT 20 MPH. SEVERE THUNDERSTORMS CAN PRODUCE DAMAGING WINDS IN EXCESS OF 70 MPH...LARGE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAINFALL. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. THIS STORM HAS THE POTENTIAL TO CAUSE SERIOUS INJURY AND SIGNIFICANT DAMAGE TO PROPERTY. LAT...LON 2650 8029 2661 8041 2680 8021 2663 8004 TIME...MOT...LOC 2311Z 231DEG 18KT 2658 8028 $$ AK
227 WWUS52 KMFL 042326 SVSMFL SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MIAMI FL 726 PM EDT TUE SEP 4 2012 FLC099-042337- /O.EXP.KMFL.SV.W.0142.000000T0000Z-120904T2330Z/ PALM BEACH FL- 726 PM EDT TUE SEP 4 2012 ...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL PALM BEACH COUNTY WILL EXPIRE AT 730 PM EDT... NATIONAL WEATHER SERVICE RADAR INDICATED THAT THE THUNDERSTORM HAS WEAKENED. THUS THE THUNDERSTORM WARNING WILL EXPIRE AT 730 PM EDT. LAT...LON 2650 8029 2661 8041 2680 8021 2663 8004 TIME...MOT...LOC 2327Z 231DEG 18KT 2663 8021 $$ AK
The office that day
Everything else NWS Miami, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 4, 1:49 PM EDT | Special Weather Statement | MFL | Broward | 26 min |
| Sep 4, 4:09 PM EDT | Special Weather Statement | MFL | Hendry | 36 min |
| Sep 4, 4:54 PM EDT | Special Weather Statement | MFL | Broward | 36 min |
| Sep 4, 4:56 PM EDT | Special Weather Statement | MFL | Hendry | 34 min |
| Sep 4, 5:11 PM EDT | Special Weather Statement | MFL | Broward | 34 min |
| Sep 4, 5:56 PM EDT | Special Marine Warning | MFL | 64 min | |
| Sep 4, 6:02 PM EDT | Special Weather Statement | MFL | Palm Beach | 28 min |
| Sep 4, 6:05 PM EDT | Special Weather Statement | MFL | Broward | 25 min |
| Sep 4, 6:23 PM EDT | Severe Thunderstorm Warning | MFL | Broward, Palm Beach | 21 min |
| Sep 4, 6:56 PM EDT | Special Weather Statement | MFL | Palm Beach | 34 min |
| Sep 4, 7:38 PM EDT | Special Weather Statement | MFL | Palm Beach | 37 min |
| Sep 4, 7:51 PM EDT | Special Marine Warning | MFL | 54 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.