Alert archive / Florida / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 55, NWS Miami, FL
NWS Miami, FL issued this severe thunderstorm warning at Jun 24, 2011, 2:43 PM EDT for Palm Beach County, Florida. It was in force for 32 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 24, 2011, 2:43 PM EDT (18:43 UTC)
- Expired
- Jun 24, 2011, 3:15 PM EDT
- In force
- 32 min
- Issued by
- NWS Miami, FL
- Area
- Storm-based polygon
County Palm Beach County, FL
The radar
The Miami radar (KAMX), 121 km from the middle of the area, began a volume at 18:46 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 24, 2:54 PM EDT | HAIL 0.88 | Royal Palm Beach, FL | AT 254 PM EDT...A MEMBER OF THE PUBLIC NEAR THE INTERSECTION OF STATE ROUTE 7 AND SOUTHERN BOULEVARD REPORTED NICKEL-SIZED HAIL...ESTIMATED WINDS AROUND 50 MPH...AND SEVERAL SMALL TREES DOWNED. |
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, 6.7 hours before the alert went out and 97 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
- 1859 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 782 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- -4 m²/s²
- 0-3 km storm-relative helicity
- -8 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
584 WUUS52 KMFL 241843 SVRMFL FLC099-241915- /O.NEW.KMFL.SV.W.0055.110624T1843Z-110624T1915Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MIAMI FL 243 PM EDT FRI JUN 24 2011 THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EAST CENTRAL PALM BEACH COUNTY IN SOUTH FLORIDA. * UNTIL 315 PM EDT * AT 241 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS HAVE DETECTED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR WELLINGTON. THIS STORM WAS NEARLY STATIONARY. * THE STORM WILL AFFECT... WELLINGTON... AND SURROUNDING COMMUNITIES. PRECAUTIONARY/PREPAREDNESS ACTIONS... FREQUENT LIGHTNING IS OCCURRING WITH THIS THUNDERSTORM. IF OUTDOORS...STAY AWAY FROM ISOLATED HIGH OBJECTS SUCH AS TREES AND AVOID WATER. MOVE INDOORS OR INSIDE A VEHICLE IF POSSIBLE. AVOID USING THE TELEPHONE UNLESS IT IS AN EMERGENCY. TRY TO UNPLUG UNNECESSARY ELECTRICAL APPLIANCES BEFORE THE THUNDERSTORM APPROACHES. HEAVY RAINS MAY FLOOD POORLY DRAINED AREAS MAKING ROADWAYS INDISTINGUISHABLE FROM CANALS AND PONDS. AVOID DRIVING IN WATERS COVERING ROADWAYS. && LAT...LON 2682 8023 2677 8008 2651 8022 2652 8036 TIME...MOT...LOC 1843Z 117DEG 1KT 2668 8022 $$ CWC
The office that day
Everything else NWS Miami, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 24, 3:42 AM EDT | Special Marine Warning | MFL | 39 min | |
| Jun 24, 9:03 AM EDT | Special Marine Warning | MFL | 27 min | |
| Jun 24, 9:15 AM EDT | Special Weather Statement | MFL | Miami-Dade | 30 min |
| Jun 24, 9:28 AM EDT | Special Marine Warning | MFL | 32 min | |
| Jun 24, 9:58 AM EDT | Special Marine Warning | MFL | 47 min | |
| Jun 24, 10:48 AM EDT | Special Marine Warning | MFL | 57 min | |
| Jun 24, 2:35 PM EDT | Special Weather Statement | MFL | Miami-Dade | 25 min |
| Jun 24, 2:39 PM EDT | Special Weather Statement | MFL | Palm Beach | 36 min |
| Jun 24, 3:18 PM EDT | Special Weather Statement | MFL | Broward | 27 min |
| Jun 24, 3:36 PM EDT | Special Weather Statement | MFL | Palm Beach | 24 min |
| Jun 24, 3:39 PM EDT | Special Weather Statement | MFL | Broward | 36 min |
| Jun 24, 3:50 PM EDT | Special Weather Statement | MFL | Miami-Dade | 25 min |
| Jun 24, 3:58 PM EDT | Special Weather Statement | MFL | Broward | 32 min |
| Jun 24, 4:04 PM EDT | Special Weather Statement | MFL | Collier | 26 min |
| Jun 24, 4:07 PM EDT | Special Weather Statement | MFL | Palm Beach | 23 min |
| Jun 24, 4:32 PM EDT | Special Marine Warning | MFL | 28 min | |
| Jun 24, 4:36 PM EDT | Special Weather Statement | MFL | Palm Beach | 24 min |
| Jun 24, 4:38 PM EDT | Special Weather Statement | MFL | Collier | 37 min |
| Jun 24, 5:13 PM EDT | Special Marine Warning | MFL | 32 min | |
| Jun 24, 5:33 PM EDT | Special Weather Statement | MFL | Hendry | 42 min |
| Jun 24, 6:29 PM EDT | Special Weather Statement | MFL | Glades | 31 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.