Alert archive / Florida / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 158, NWS Miami, FL
NWS Miami, FL issued this severe thunderstorm warning at Sep 28, 2012, 3:26 PM EDT for Palm Beach County, Florida. It was in force for 34 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 28, 2012, 3:26 PM EDT (19:26 UTC)
- Expired
- Sep 28, 2012, 4:00 PM EDT
- In force
- 34 min
- Issued by
- NWS Miami, FL
- Area
- Storm-based polygon
County Palm Beach County, FL
The radar
The Miami radar (KAMX), 95 km from the middle of the area, began a volume at 19:26 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, 7.4 hours before the alert went out and 75 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
- 3613 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 465 m above ground
- 0-6 km bulk shear
- 1 kt
- 0-1 km storm-relative helicity
- 5 m²/s²
- 0-3 km storm-relative helicity
- 21 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
482 WUUS52 KMFL 281926 SVRMFL FLC099-282000- /O.NEW.KMFL.SV.W.0158.120928T1926Z-120928T2000Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MIAMI FL 326 PM EDT FRI SEP 28 2012 THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTH CENTRAL PALM BEACH COUNTY IN SOUTH FLORIDA. * UNTIL 400 PM EDT * AT 322 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED OVER CENTRAL PALM BEACH COUNTY...AND MOVING SOUTH AT 5 MPH. * THE STORM WILL AFFECT... US 27 RURAL CENTRAL PALM BEACH COUNTY RURAL SOUTHERN 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. REPORT SEVERE WEATHER OR DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY EMERGENCY MANAGEMENT. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN MIAMI. && LAT...LON 2635 8049 2635 8074 2661 8065 2659 8049 TIME...MOT...LOC 1925Z 013DEG 6KT 2652 8059 $$ BAXTER
3 follow-up statements
841 WWUS52 KMFL 281933 SVSMFL SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MIAMI FL 333 PM EDT FRI SEP 28 2012 FLC099-282000- /O.CON.KMFL.SV.W.0158.000000T0000Z-120928T2000Z/ PALM BEACH FL- 333 PM EDT FRI SEP 28 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM EDT FOR SOUTH CENTRAL PALM BEACH COUNTY... AT 326 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED OVER CENTRAL PALM BEACH COUNTY...MOVING SOUTHWEST AT 10 MPH. THE SEVERE THUNDERSTORM WILL BE NEAR... US 27 BETWEEN OKEELANTA AND THE COUNTY LINE OF BROWARD AND PALM BEACH RURAL SOUTHERN PALM BEACH COUNTY AND SURROUNDING COMMUNITIES. REPORT SEVERE WEATHER OR DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY EMERGENCY MANAGEMENT. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN MIAMI. LAT...LON 2635 8049 2635 8074 2661 8065 2659 8049 TIME...MOT...LOC 1932Z 023DEG 8KT 2650 8060 $$ BAXTER
397 WWUS52 KMFL 281946 SVSMFL SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MIAMI FL 346 PM EDT FRI SEP 28 2012 FLC099-282000- /O.CON.KMFL.SV.W.0158.000000T0000Z-120928T2000Z/ PALM BEACH FL- 346 PM EDT FRI SEP 28 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM EDT FOR SOUTH CENTRAL PALM BEACH COUNTY... AT 340 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS APPROACHING US 27 BETWEEN OKEELANTA AND THE COUNTY LINE OF BROWARD AND PALM BEACH....MOVING SOUTHWEST AT 10 MPH. THE SEVERE THUNDERSTORM WILL BE NEAR... US 27 RURAL SOUTHERN PALM BEACH COUNTY AND SURROUNDING COMMUNITIES. REPORT SEVERE WEATHER OR DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY EMERGENCY MANAGEMENT. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN MIAMI. LAT...LON 2635 8050 2635 8074 2657 8066 2655 8050 TIME...MOT...LOC 1945Z 023DEG 8KT 2647 8061 $$ BAXTER
366 WWUS52 KMFL 281957 SVSMFL SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MIAMI FL 357 PM EDT FRI SEP 28 2012 FLC099-282006- /O.EXP.KMFL.SV.W.0158.000000T0000Z-120928T2000Z/ PALM BEACH FL- 357 PM EDT FRI SEP 28 2012 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL PALM BEACH COUNTY WILL EXPIRE AT 400 PM EDT... THE THUNDERSTORMS THAT PROMPTED THE WARNING HAVE WEAKENED BELOW SEVERE LIMITS. THEREFORE...THE SEVERE THUNDERSTORM WARNING WILL BE ALLOWED TO EXPIRED AT 4 PM EDT. HOWEVER...THUNDERSTORMS REMAIN IN THE AREA WHICH CAN STILL PRODUCE FREQUENT LIGHTNING...GUSTY WINDS TO 40 MPH...VERY HEAVY RAINFALL AND SMALL HAIL. STAY TUNED TO NOAA WEATHER RADIO OR LOCAL MEDIA FOR THE LATEST UPDATES. LAT...LON 2635 8050 2635 8074 2657 8066 2655 8050 TIME...MOT...LOC 1956Z 029DEG 15KT 2643 8066 $$ BAXTER
The office that day
Everything else NWS Miami, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 28, 8:27 AM EDT | Special Marine Warning | MFL | 48 min | |
| Sep 28, 2:30 PM EDT | Special Weather Statement | MFL | Miami-Dade | 30 min |
| Sep 28, 2:55 PM EDT | Special Weather Statement | MFL | Miami-Dade | 35 min |
| Sep 28, 3:09 PM EDT | Special Weather Statement | MFL | Palm Beach | 51 min |
| Sep 28, 3:11 PM EDT | Special Weather Statement | MFL | Broward | 34 min |
| Sep 28, 3:19 PM EDT | Severe Thunderstorm Warning | MFL | Broward, Miami-Dade | 41 min |
| Sep 28, 3:33 PM EDT | Special Weather Statement | MFL | Miami-Dade | 27 min |
| Sep 28, 4:10 PM EDT | Special Weather Statement | MFL | Miami-Dade | 35 min |
| Sep 28, 4:15 PM EDT | Special Weather Statement | MFL | Broward | 60 min |
| Sep 28, 4:58 PM EDT | Special Weather Statement | MFL | Glades | 62 min |
| Sep 28, 5:17 PM EDT | Severe Thunderstorm Warning | MFL | Glades | 43 min |
| Sep 28, 5:33 PM EDT | Special Marine Warning | MFL | 57 min | |
| Sep 28, 6:19 PM EDT | Special Marine Warning | MFL | 56 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.