Alert archive / Florida / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 5, NWS Miami, FL

March 10, 2011Miami-Dade County, Florida

NWS Miami, FL issued this severe thunderstorm warning at Mar 10, 2011, 12:14 PM EST for Miami-Dade County, Florida. It was in force for 31 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
Mar 10, 2011, 12:14 PM EST (17:14 UTC)
Expired
Mar 10, 2011, 12:45 PM EST
In force
31 min
Issued by
NWS Miami, FL
Area
Storm-based polygon

County Miami-Dade County, FL

What was reported inside it

TimeReportWhereRemark
Mar 10, 12:19 PM ESTTORNADOKey Biscayne, FLINTERSERCTION OF RICKENBACKER CAUSEWAY AND US 1. NOAA HRD EMPLOYEE REPORTED SPINNING DEBRIS AND CAR SHAKING WITH FUNNEL CLOUD TOUCHING DOWN OVER LAND IN THE VICINITY OF MAST ACADEMY MOVING THEN OVER AOML ON VIRGNIA KEY. AOML HRD MEASURED A 55 KNOTS WIND GUSTS
Mar 10, 12:20 PM ESTTSTM WND DMGMiami, FLAMATEUR RADIO REPORTS INDICATE TREES DOWN AND CONSTRUCTION DEBRIS AROUND SW 9TH ST AND SW 36TH CT IN MIAMI.
Mar 10, 12:20 PM ESTTSTM WND DMGMiami Beach, FLAMATEUR RADIO REPORTS INDICATE TREES DOWN AND CONSTRUCTION DEBRIS AROUND SW 9TH ST AND SW 36TH CT IN MIAMI.

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, 5.2 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.

Skew-T log-pSkew-T log-p diagram, Miami, FL at 12:00Z on 2011-03-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 674 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Miami, FL at 12:00Z on 2011-03-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 54 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
674 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
635 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
54 m²/s²
0-3 km storm-relative helicity
50 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

138 
WUUS52 KMFL 101714
SVRMFL
FLC086-101745-
/O.NEW.KMFL.SV.W.0005.110310T1714Z-110310T1745Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
1214 PM EST THU MAR 10 2011

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL MIAMI-DADE COUNTY IN SOUTH FLORIDA.

* UNTIL 1245 PM EST

* AT 1213 PM EST...NATIONAL WEATHER SERVICE METEOROLOGISTS HAVE
  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 MIAMI SHORES TO 3 MILES EAST OF
  PINECREST...AND MOVING EAST AT 30 MPH.

* THE LINE OF STORMS WILL AFFECT...
  MIAMI...
  MIAMI BEACH...
  KEY BISCAYNE...
  AND SURROUNDING COMMUNITIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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. OR YOU CAN
ALSO CALL THE NATIONAL WEATHER SERVICE IN MIAMI DIRECTLY AT
305.229.4528 TO REPORT SEVERE WEATHER.

&&

LAT...LON 2576 8012 2575 8014 2571 8015 2567 8015
      2567 8016 2569 8019 2572 8019 2573 8016
      2574 8017 2573 8022 2563 8027 2560 8030
      2561 8033 2591 8020 2591 8011
TIME...MOT...LOC 1714Z 286DEG 25KT 2587 8016 2566 8025

$$

BAXTER
1 follow-up statement
121 
WWUS52 KMFL 101739
SVSMFL

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
1239 PM EST THU MAR 10 2011

FLC086-101748-
/O.EXP.KMFL.SV.W.0005.000000T0000Z-110310T1745Z/
MIAMI-DADE FL-
1239 PM EST THU MAR 10 2011

...THE SEVERE THUNDERSTORM WARNINGS FOR EAST CENTRAL AND SOUTHEAST 
   MIAMI-DADE COUNTY WILL EXPIRE AT 1245 PM EST...

NATIONAL WEATHER SERVICE RADAR INDICATED THAT THE THUNDERSTORMS ARE
MOVING OUT OF THE WARNED AREA...AND SHOULD BE IN THE ATLANTIC AND
BISCAYNE BAY WATERS BY 12:45 PM EST. THUS THE THUNDERSTORM WARNINGS WILL
BE ALLOW TO EXPIRE AT 1245 PM EST.

LAT...LON 2576 8012 2575 8014 2571 8015 2567 8015
      2567 8016 2569 8019 2572 8019 2573 8016
      2574 8017 2573 8022 2563 8027 2560 8030
      2561 8033 2591 8020 2591 8011
TIME...MOT...LOC 1738Z 294DEG 15KT 2588 8009 2556 8017
          2528 8037

$$

BAXTER

The office that day

Everything else NWS Miami, FL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 10, 5:38 AM ESTSmall Craft AdvisoryMFL40 hr
Mar 10, 8:32 AM ESTSpecial Weather StatementMFLGlades58 min
Mar 10, 9:09 AM ESTSpecial Weather StatementMFLCollier, Glades, Hendry51 min
Mar 10, 9:17 AM ESTSpecial Marine WarningMFL58 min
Mar 10, 9:40 AM ESTSpecial Marine WarningMFL65 min
Mar 10, 9:51 AM ESTSpecial Weather StatementMFLCollier, Glades, Hendry, Palm Beach54 min
Mar 10, 10:13 AM ESTSpecial Marine WarningMFL62 min
Mar 10, 10:42 AM ESTSpecial Weather StatementMFLBroward, Miami-Dade, Monroe, Palm Beach63 min
Mar 10, 10:47 AM ESTSpecial Marine WarningMFL23 min
Mar 10, 11:24 AM ESTSpecial Weather StatementMFLBroward, Miami-Dade, Monroe66 min
Mar 10, 11:31 AM ESTSpecial Marine WarningMFL59 min
Mar 10, 11:51 AM ESTSevere Thunderstorm WarningMFLMiami-Dade24 min
Mar 10, 11:54 AM ESTSpecial Marine WarningMFL66 min
Mar 10, 12:01 PM ESTSevere Thunderstorm WarningMFLMiami-Dade44 min
Mar 10, 12:18 PM ESTSpecial Weather StatementMFLBroward27 min
Mar 10, 12:33 PM ESTSpecial Marine WarningMFL87 min
Mar 10, 2:03 PM ESTSpecial Marine WarningMFL57 min
Mar 10, 3:30 PM ESTSpecial Marine WarningMFL45 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.