Alert archive / Florida / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 35, NWS Miami, FL
NWS Miami, FL issued this severe thunderstorm warning at May 18, 2012, 4:14 PM EDT for Hendry County, Palm Beach County, Florida. It was in force for 46 min. 2 reports 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
- May 18, 2012, 4:14 PM EDT (20:14 UTC)
- Expired
- May 18, 2012, 5:00 PM EDT
- In force
- 46 min
- Issued by
- NWS Miami, FL
- Area
- Storm-based polygon
Counties Hendry County, FL, Palm Beach County, FL
The radar
The Miami radar (KAMX), 127 km from the middle of the area, began a volume at 20:17 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 |
|---|---|---|---|
| May 18, 4:35 PM EDT | TSTM WND DMG | Clewiston, FL | A SEVERE THUNDERSTORM AND POSSIBLE TORNADO SNAPPED SEVERAL TREES AND DOWNED AT LEAST 6 POWERLINE POLES NEAR THE INTERSECTION OF OLD U.S. HIGHWAY 27 AND HOOKERS POINT ROAD IN CLEWISTON. THE DAMAGE PATH INDICATED A POSSIBLE TORNADIC CIRCULATION. THIS INFORMATION |
| May 18, 4:45 PM EDT | TSTM WND GST 51 | 3 Ese Clewiston, FL | A THUNDERSTORM PRODUCED A WIND GUST OF 44 KNOTS OR 51 MPH AT A MESONET SITE JUST EAST OF CLEWISTON. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Miami, FL (KMFL), launched 12:00Z, 8.2 hours before the alert went out and 109 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
- 1355 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 572 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 16 m²/s²
- 0-3 km storm-relative helicity
- 71 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.5
The text
As transmitted, in the capitals the NWS used until 2016.
095
WUUS52 KMFL 182014
SVRMFL
FLC051-099-182100-
/O.NEW.KMFL.SV.W.0035.120518T2014Z-120518T2100Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
414 PM EDT FRI MAY 18 2012
THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
WEST CENTRAL PALM BEACH COUNTY IN SOUTH FLORIDA.
NORTHEASTERN HENDRY COUNTY IN SOUTH FLORIDA.
* UNTIL 500 PM EDT
* AT 413 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 11
MILES SOUTH OF CLEWISTON...AND MOVING NORTHEAST AT 15 MPH.
* THE STORM WILL AFFECT...
CLEWISTON...
OKEELANTA...
SOUTH BAY...
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 2661 8049 2645 8093 2665 8106 2677 8093
2674 8085 2671 8081 2671 8078 2669 8074
2672 8073 2677 8075 2678 8073 2675 8071
2676 8069 2681 8070 2682 8069
TIME...MOT...LOC 2014Z 241DEG 14KT 2660 8090
$$
AK4 follow-up statements
964
WWUS52 KMFL 182025
SVSMFL
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
425 PM EDT FRI MAY 18 2012
FLC051-099-182100-
/O.CON.KMFL.SV.W.0035.000000T0000Z-120518T2100Z/
HENDRY FL-PALM BEACH FL-
425 PM EDT FRI MAY 18 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR WEST CENTRAL PALM BEACH AND NORTHEASTERN HENDRY COUNTIES...
AT 422 PM EDT...A SEVERE THUNDERSTORM WAS REPORTED. HALF DOLLAR
SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS
LOCATED NEAR LAKE HARBOR...MOVING NORTHEAST AT 20 MPH.
LAT...LON 2661 8049 2648 8084 2668 8103 2677 8093
2674 8085 2671 8081 2671 8078 2669 8074
2672 8073 2677 8075 2678 8073 2675 8071
2676 8069 2681 8070 2682 8069
TIME...MOT...LOC 2025Z 224DEG 17KT 2666 8086
$$
AK649
WWUS52 KMFL 182036
SVSMFL
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
436 PM EDT FRI MAY 18 2012
FLC051-099-182100-
/O.CON.KMFL.SV.W.0035.000000T0000Z-120518T2100Z/
HENDRY FL-PALM BEACH FL-
436 PM EDT FRI MAY 18 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR WEST CENTRAL PALM BEACH AND NORTHEASTERN HENDRY COUNTIES...
AT 431 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING HALF DOLLAR SIZE
HAIL...AND DESTRUCTIVE WINDS OF 60 TO 70 MPH. THIS STORM WAS LOCATED
NEAR LAKE HARBOR...MOVING NORTHEAST AT 20 MPH.
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. OR YOU CAN
ALSO CALL THE NATIONAL WEATHER SERVICE IN MIAMI DIRECTLY AT
305.229.4528 TO REPORT SEVERE WEATHER.
LAT...LON 2666 8054 2656 8087 2669 8102 2677 8093
2674 8085 2671 8081 2671 8078 2669 8074
2672 8073 2677 8075 2678 8073 2675 8071
2676 8069 2681 8070 2682 8069
TIME...MOT...LOC 2036Z 210DEG 16KT 2674 8086
$$
AK571
WWUS52 KMFL 182046
SVSMFL
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
446 PM EDT FRI MAY 18 2012
FLC051-099-182100-
/O.CON.KMFL.SV.W.0035.000000T0000Z-120518T2100Z/
HENDRY FL-PALM BEACH FL-
446 PM EDT FRI MAY 18 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR WEST CENTRAL PALM BEACH AND NORTHEASTERN HENDRY COUNTIES...
AT 441 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING LARGE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR LAKE
HARBOR...MOVING NORTHEAST AT 15 MPH.
REPORT SEVERE WEATHER OR DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY
OR YOUR COUNTY EMERGENCY MANAGEMENT. THEY WILL RELAY YOUR REPORT TO
THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN MIAMI. OR YOU CAN
ALSO CALL THE NATIONAL WEATHER SERVICE IN MIAMI DIRECTLY AT
305.229.4528 TO REPORT SEVERE WEATHER.
LAT...LON 2674 8062 2662 8083 2672 8096 2676 8094
2677 8093 2674 8085 2671 8081 2671 8078
2669 8074 2672 8073 2677 8075 2678 8073
2675 8071 2676 8069 2681 8070 2682 8069
TIME...MOT...LOC 2046Z 215DEG 13KT 2674 8085
$$
AK110
WWUS52 KMFL 182053
SVSMFL
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
453 PM EDT FRI MAY 18 2012
FLC051-099-182102-
/O.EXP.KMFL.SV.W.0035.000000T0000Z-120518T2100Z/
HENDRY FL-PALM BEACH FL-
453 PM EDT FRI MAY 18 2012
...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL PALM BEACH AND
NORTHEASTERN HENDRY COUNTIES WILL EXPIRE AT 500 PM EDT...
NATIONAL WEATHER SERVICE RADAR INDICATED THAT THE THUNDERSTORM HAS
MOVED INTO LAKE OKEECHOBEE. THUS THE THUNDERSTORM WARNING WILL
EXPIRE AT 500 PM EDT.
LAT...LON 2674 8062 2662 8083 2672 8096 2676 8094
2677 8093 2674 8085 2671 8081 2671 8078
2669 8074 2672 8073 2677 8075 2678 8073
2675 8071 2676 8069 2681 8070 2682 8069
TIME...MOT...LOC 2052Z 236DEG 16KT 2677 8077
$$
AKThe office that day
Everything else NWS Miami, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 17, 8:02 PM EDT | Special Weather Statement | MFL | Palm Beach | 28 min |
| May 17, 8:52 PM EDT | Special Weather Statement | MFL | Palm Beach | 38 min |
| May 17, 9:14 PM EDT | Special Marine Warning | MFL | 61 min | |
| May 17, 9:20 PM EDT | Areal Flood Advisory | MFL | Palm Beach | 76 min |
| May 17, 9:30 PM EDT | Special Weather Statement | MFL | Palm Beach | 30 min |
| May 18, 1:16 PM EDT | Special Weather Statement | MFL | Broward | 29 min |
| May 18, 1:26 PM EDT | Special Weather Statement | MFL | Miami-Dade | 49 min |
| May 18, 1:29 PM EDT | Special Marine Warning | MFL | 61 min | |
| May 18, 1:45 PM EDT | Special Marine Warning | MFL | 60 min | |
| May 18, 1:46 PM EDT | Special Weather Statement | MFL | Palm Beach | 29 min |
| May 18, 1:49 PM EDT | Severe Thunderstorm Warning | MFL | Broward, Palm Beach | 26 min |
| May 18, 1:52 PM EDT | Severe Thunderstorm Warning | MFL | Miami-Dade | 38 min |
| May 18, 2:07 PM EDT | Severe Thunderstorm Warning | MFL | Broward, Palm Beach | 23 min |
| May 18, 2:08 PM EDT | Severe Thunderstorm Warning | MFL | Miami-Dade | 37 min |
| May 18, 2:18 PM EDT | Special Weather Statement | MFL | Palm Beach | 12 min |
| May 18, 2:25 PM EDT | Special Marine Warning | MFL | 95 min | |
| May 18, 2:28 PM EDT | Severe Thunderstorm Warning | MFL | Broward, Miami-Dade | 26 min |
| May 18, 2:36 PM EDT | Special Marine Warning | MFL | 54 min | |
| May 18, 2:40 PM EDT | Special Weather Statement | MFL | Miami-Dade | 35 min |
| May 18, 2:44 PM EDT | Special Weather Statement | MFL | Broward | 46 min |
| May 18, 2:53 PM EDT | Special Weather Statement | MFL | Broward | 37 min |
| May 18, 3:23 PM EDT | Areal Flood Advisory | MFL | Broward | 112 min |
| May 18, 3:28 PM EDT | Special Weather Statement | MFL | Broward | 32 min |
| May 18, 3:33 PM EDT | Special Marine Warning | MFL | 87 min | |
| May 18, 3:39 PM EDT | Special Weather Statement | MFL | Broward | 51 min |
| May 18, 3:43 PM EDT | Special Weather Statement | MFL | Palm Beach | 47 min |
| May 18, 3:58 PM EDT | Severe Thunderstorm Warning | MFL | Broward | 18 min |
| May 18, 4:05 PM EDT | Special Weather Statement | MFL | Hendry | 40 min |
| May 18, 4:14 PM EDT | Special Marine Warning | MFL | 91 min | |
| May 18, 4:18 PM EDT | Special Weather Statement | MFL | Broward | 42 min |
| May 18, 4:39 PM EDT | Special Marine Warning | MFL | 81 min | |
| May 18, 5:02 PM EDT | Special Weather Statement | MFL | Miami-Dade | 28 min |
| May 18, 5:09 PM EDT | Special Marine Warning | MFL | 81 min | |
| May 18, 5:32 PM EDT | Special Weather Statement | MFL | Hendry | 28 min |
| May 18, 5:58 PM EDT | Special Marine Warning | MFL | 62 min | |
| May 18, 6:17 PM EDT | Special Marine Warning | MFL | 58 min | |
| May 18, 6:31 PM EDT | Special Weather Statement | MFL | Miami-Dade | 29 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.