Alert archive / Florida / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 7, NWS Miami, FL
NWS Miami, FL issued this severe thunderstorm warning at Mar 29, 2011, 4:22 PM EDT for Miami-Dade County, Florida. It was in force for 25 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
- Mar 29, 2011, 4:22 PM EDT (20:22 UTC)
- Expired
- Mar 29, 2011, 4:47 PM EDT
- In force
- 25 min
- Issued by
- NWS Miami, FL
- Area
- Storm-based polygon
County Miami-Dade County, FL
The radar
The Miami radar (KAMX), 16 km from the middle of the area, began a volume at 20:26 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 29, 4:27 PM EDT | HAIL 1 | 2 Wsw Metro Zoo, FL | A MEMBER OF THE MEDIA RELAYED REPORTS OF DIME TO QUARTER-SIZED HAIL NEAR THE INTERSECTION OF SW 154TH AVENUE AND EUREKA DRIVE/184TH STREET. |
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, 8.4 hours before the alert went out and 39 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
- 950 J/kg
- Mixed-layer CIN
- -126 J/kg
- Mixed-layer LCL
- 965 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 109 m²/s²
- 0-3 km storm-relative helicity
- 138 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.7
The text
As transmitted, in the capitals the NWS used until 2016.
293
WUUS52 KMFL 292022
SVRMFL
FLC086-292100-
/O.NEW.KMFL.SV.W.0007.110329T2022Z-110329T2100Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
422 PM EDT TUE MAR 29 2011
THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
CENTRAL MIAMI-DADE COUNTY IN SOUTH FLORIDA.
* UNTIL 500 PM EDT
* AT 416 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 4 MILES NORTH OF THE REDLAND...AND MOVING SOUTHEAST AT 10
MPH.
* THE STORM WILL AFFECT...
COUNTRY WALK...
WEST PERRINE...
THE REDLAND...
GOULDS...
NARANJA...
PRINCETON...
AND SURROUNDING COMMUNITIES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS CAN PRODUCE VERY STRONG WINDS IN EXCESS OF 60
MPH...LARGE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAINFALL. STAY
INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
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.
&&
LAT...LON 2532 8045 2562 8057 2568 8037 2557 8030
2554 8030 2550 8033 2546 8033 2544 8031
2540 8032 2539 8030 2544 8021
TIME...MOT...LOC 2021Z 331DEG 10KT 2559 8046
$$
GREGORIA3 follow-up statements
724
WWUS52 KMFL 292035
SVSMFL
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
435 PM EDT TUE MAR 29 2011
FLC086-292100-
/O.CON.KMFL.SV.W.0007.000000T0000Z-110329T2100Z/
MIAMI-DADE FL-
435 PM EDT TUE MAR 29 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR CENTRAL MIAMI-DADE COUNTY...
AT 430 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM PRODUCING QUARTER SIZED HAIL...AND
DAMAGING WINDS TO AROUND 60 MPH. THIS STORM WAS LOCATED NEAR
INLIKITA...MOVING SOUTHEAST AT 10 MPH.
THE PUBLIC JUST REPORTED HAIL UP TO QUARTER SIZE OCCURRING WITH THIS
STORM AT SW 154TH AVE AND EUREKA.
SEVERE THUNDERSTORMS CAN PRODUCE VERY STRONG WINDS IN EXCESS OF 60
MPH...LARGE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAINFALL. STAY
INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
LAT...LON 2554 8030 2553 8032 2550 8033 2546 8033
2544 8031 2540 8032 2539 8031 2532 8045
2561 8055 2566 8036 2557 8030
TIME...MOT...LOC 2034Z 331DEG 10KT 2556 8044
$$
GREGORIA550
WWUS52 KMFL 292046
SVSMFL
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
446 PM EDT TUE MAR 29 2011
FLC086-292056-
/O.CAN.KMFL.SV.W.0007.000000T0000Z-110329T2100Z/
MIAMI-DADE FL-
446 PM EDT TUE MAR 29 2011
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL MIAMI-DADE COUNTY IS
CANCELLED...
NATIONAL WEATHER SERVICE RADAR INDICATED THAT THE THUNDERSTORM HAS
WEAKENED. THUS...THE SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED.
THUNDERSTORMS REMAIN IN THE AREA. FREQUENT LIGHTNING...GUSTY WINDS TO
40 MPH...VERY HEAVY RAINFALL AND SMALL HAIL ARE STILL POSSIBLE. STAY
TUNED TO NOAA WEATHER RADIO OR LOCAL MEDIA FOR THE LATEST UPDATES.
LAT...LON 2554 8030 2553 8032 2550 8033 2546 8033
2544 8031 2540 8032 2539 8031 2532 8045
2561 8055 2566 8036 2557 8030
TIME...MOT...LOC 2046Z 331DEG 10KT 2553 8042
$$
GREGORIA066
WWUS52 KMFL 292047
SVSMFL
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
447 PM EDT TUE MAR 29 2011
FLC086-292057-
/O.CAN.KMFL.SV.W.0007.000000T0000Z-110329T2100Z/
MIAMI-DADE FL-
447 PM EDT TUE MAR 29 2011
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL MIAMI-DADE COUNTY IS
CANCELLED...
NATIONAL WEATHER SERVICE RADAR INDICATED THAT THE THUNDERSTORM HAS
WEAKENED AND MOVED OUT OF THE WARNED AREA. THUS THE THUNDERSTORM
WARNING HAS BEEN CANCELLED.
ADDITIONAL THUNDERSTORMS REMAIN IN THE AREA. FREQUENT
LIGHTNING...GUSTY WINDS TO 40 MPH...VERY HEAVY RAINFALL AND SMALL
HAIL ARE STILL POSSIBLE. STAY TUNED TO NOAA WEATHER RADIO OR LOCAL
MEDIA FOR THE LATEST UPDATES.
LAT...LON 2554 8030 2553 8032 2550 8033 2546 8033
2544 8031 2540 8032 2539 8031 2532 8045
2561 8055 2566 8036 2557 8030
TIME...MOT...LOC 2047Z 331DEG 10KT 2553 8042
$$
KOBThe office that day
Everything else NWS Miami, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 28, 8:24 PM EDT | Special Weather Statement | MFL | Miami-Dade | 21 min |
| Mar 28, 8:55 PM EDT | Special Marine Warning | MFL | 50 min | |
| Mar 28, 11:41 PM EDT | Special Marine Warning | MFL | 64 min | |
| Mar 29, 12:41 AM EDT | Special Marine Warning | MFL | 64 min | |
| Mar 29, 3:10 PM EDT | Special Weather Statement | MFL | Miami-Dade | 35 min |
| Mar 29, 3:32 PM EDT | Special Weather Statement | MFL | Miami-Dade | 28 min |
| Mar 29, 3:47 PM EDT | Special Weather Statement | MFL | Monroe | 58 min |
| Mar 29, 3:54 PM EDT | Special Weather Statement | MFL | Broward | 36 min |
| Mar 29, 4:02 PM EDT | Severe Thunderstorm Warning | MFL | Miami-Dade | 58 min |
| Mar 29, 4:11 PM EDT | Special Weather Statement | MFL | Miami-Dade | 34 min |
| Mar 29, 4:37 PM EDT | Special Weather Statement | MFL | Broward | 38 min |
| Mar 29, 4:48 PM EDT | Severe Thunderstorm Warning | MFL | Broward, Palm Beach | 57 min |
| Mar 29, 4:51 PM EDT | Severe Thunderstorm Warning | MFL | Miami-Dade | 20 min |
| Mar 29, 5:16 PM EDT | Special Weather Statement | MFL | Broward | 59 min |
| Mar 29, 5:23 PM EDT | Special Weather Statement | MFL | Palm Beach | 22 min |
| Mar 29, 5:24 PM EDT | Special Weather Statement | MFL | Palm Beach | 36 min |
| Mar 29, 5:34 PM EDT | Severe Thunderstorm Warning | MFL | Palm Beach | 27 min |
| Mar 29, 5:38 PM EDT | Severe Thunderstorm Warning | MFL | Palm Beach | 37 min |
| Mar 29, 6:02 PM EDT | Special Weather Statement | MFL | Palm Beach | 58 min |
| Mar 29, 6:06 PM EDT | Special Marine Warning | MFL | 54 min | |
| Mar 29, 6:14 PM EDT | Severe Thunderstorm Warning | MFL | Palm Beach | 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.