Alert archive / Florida / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 47, NWS Miami, FL
NWS Miami, FL issued this severe thunderstorm warning at May 24, 2012, 12:46 PM EDT for Miami-Dade County, Florida. It was in force for 44 min. 3 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 24, 2012, 12:46 PM EDT (16:46 UTC)
- Expired
- May 24, 2012, 1:30 PM EDT
- In force
- 44 min
- Issued by
- NWS Miami, FL
- Area
- Storm-based polygon
County Miami-Dade County, FL
The radar
The Miami radar (KAMX), 31 km from the middle of the area, began a volume at 16:46 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 |
|---|---|---|---|
| May 24, 12:55 PM EDT | NON-TSTM WND GST 62 | N Key Biscayne, FL | PEAK GUST OF 54 KT...62 MPH...AT WX FLOW SITE ON KEY BISCAYNE. SUSTAINED WIND 33 KT...38 MPH. |
| May 24, 1:10 PM EDT | NON-TSTM WND DMG | Miami Beach, FL | SEVERAL TREES DOWN ON MIAMI BEACH. ONE LARGE TREE DOWNED NEAR MIAMI BEACH HIGH SCHOOL TEMPORARILY BLOCKED DADE BOULEVARD. REST OF DOWNED TREES OF MEDIUM SIZE ALONG OCEAN DRIVE. |
| May 24, 1:15 PM EDT | NON-TSTM WND DMG | Miami Beach, FL | A LARGE AWNING WAS DOWNED AT A SOUTH BEACH HOTEL DURING STRONG WIND GUSTS ASSOCIATED WITH A HEAVY RAIN SHOWER. |
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, 4.8 hours before the alert went out and 15 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
- 877 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 473 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 58 m²/s²
- 0-3 km storm-relative helicity
- 44 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.7
The text
As transmitted, in the capitals the NWS used until 2016.
766
WUUS52 KMFL 241646
SVRMFL
FLC086-241730-
/O.NEW.KMFL.SV.W.0047.120524T1646Z-120524T1730Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
1246 PM EDT THU MAY 24 2012
THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
EXTREME NORTHEASTERN MIAMI-DADE COUNTY IN SOUTH FLORIDA.
* UNTIL 130 PM EDT
* AT 1241 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM 5 MILES SOUTHEAST OF MIAMI BEACH TO 6 MILES SOUTHEAST OF KEY
BISCAYNE...AND MOVING NORTH TO NORTHWEST AT 10 MPH.
* THE LINE OF STORMS WILL AFFECT...
KEY BISCAYNE...
MIAMI BEACH...
AND SURROUNDING COMMUNITIES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 58 MPH.
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.
HEAVY RAINS MAY FLOOD POORLY DRAINED AREAS MAKING ROADWAYS
INDISTINGUISHABLE FROM CANALS AND PONDS. AVOID DRIVING IN WATERS
COVERING ROADWAYS.
SEVERE THUNDERSTORMS CAN ALSO PRODUCE TORNADOES WITH LITTLE OR NO
ADVANCE WARNING. PREPARE TO MOVE TO A PLACE OF SAFETY IN AN INTERIOR
ROOM IN THE LOWEST FLOOR OF YOUR HOUSE OR BUSINESS IF A TORNADO IS
SPOTTED.
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 2567 8015 2566 8016 2568 8018 2574 8017
2575 8019 2579 8018 2576 8018 2575 8016
2577 8015 2584 8014 2585 8015 2591 8015
2588 8011 2585 8011
TIME...MOT...LOC 1645Z 163DEG 7KT 2577 8007 2562 8012
$$
CWC/BNB1 follow-up statement
233
WWUS52 KMFL 241722
SVSMFL
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
122 PM EDT THU MAY 24 2012
FLC086-241732-
/O.EXP.KMFL.SV.W.0047.000000T0000Z-120524T1730Z/
MIAMI-DADE FL-
122 PM EDT THU MAY 24 2012
...THE SEVERE THUNDERSTORM WARNING FOR EXTREME NORTHEASTERN
MIAMI-DADE COUNTY WILL EXPIRE AT 130 PM EDT...
NATIONAL WEATHER SERVICE RADAR INDICATED THAT THE THUNDERSTORMS HAVE
MOVED OUT OF THE WARNED AREA. THUS THE THUNDERSTORM WARNING WILL
EXPIRE AT 130 PM EDT.
LAT...LON 2567 8015 2566 8016 2568 8018 2574 8017
2575 8019 2579 8018 2576 8018 2575 8016
2577 8015 2584 8014 2585 8015 2591 8015
2588 8011 2585 8011
TIME...MOT...LOC 1722Z 163DEG 7KT 2584 8009 2569 8014
$$
BAXTERThe office that day
Everything else NWS Miami, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 24, 9:25 AM EDT | Areal Flood Advisory | MFL | Miami-Dade | 4 hr |
| May 24, 10:49 AM EDT | Special Marine Warning | MFL | 116 min | |
| May 24, 11:00 AM EDT | Areal Flood Advisory | MFL | Broward, Miami-Dade | 2 hr |
| May 24, 11:29 AM EDT | Special Weather Statement | MFL | Miami-Dade | 46 min |
| May 24, 11:46 AM EDT | Severe Thunderstorm Warning | MFL | Miami-Dade | 34 min |
| May 24, 12:33 PM EDT | Special Marine Warning | MFL | 117 min | |
| May 24, 12:57 PM EDT | Areal Flood Advisory | MFL | Broward, Palm Beach | 2 hr |
| May 24, 1:13 PM EDT | High Wind Warning | MFL | Broward, Miami-Dade | 103 min |
| May 24, 1:19 PM EDT | Gale Warning | MFL | 3 hr | |
| May 24, 4:43 PM EDT | Small Craft Advisory | MFL | 5 hr | |
| May 24, 6:06 PM EDT | Special Marine Warning | MFL | 70 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.