Alert archive / Florida / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 4, NWS Miami, FL

March 10, 2011Miami-Dade County, Florida

NWS Miami, FL issued this severe thunderstorm warning at Mar 10, 2011, 12:01 PM EST for Miami-Dade County, Florida. It was in force for 44 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Mar 10, 2011, 12:01 PM EST (17:01 UTC)
Expired
Mar 10, 2011, 12:45 PM EST
In force
44 min
Issued by
NWS Miami, FL
Area
Storm-based polygon

County Miami-Dade County, FL

The nearest sounding before it

Miami, FL (KMFL), launched 12:00Z, 5.0 hours before the alert went out and 57 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.

554 
WUUS52 KMFL 101701
SVRMFL
FLC086-101745-
/O.NEW.KMFL.SV.W.0004.110310T1701Z-110310T1745Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
1201 PM EST THU MAR 10 2011

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

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

* UNTIL 1245 PM EST

* AT NOON 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 4 MILES NORTH OF THE REDLAND TO ROYAL PALM RANGER
  STATION TO 14 MILES SOUTHWEST OF MAHOGANY HAMMOCK...AND MOVING
  SOUTHEAST AT 50 MPH.

* THE LINE OF STORMS WILL AFFECT...
  REDLAND...
  GOULDS...
  CUTLER BAY...
  HOMESTEAD BAYFRONT PARK...
  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.

&&

LAT...LON 2536 8024 2539 8026 2520 8049 2522 8053
      2520 8054 2518 8063 2514 8066 2517 8068
      2514 8070 2514 8078 2518 8086 2540 8088
      2569 8061 2560 8030 2549 8033 2540 8032
      2539 8029 2540 8023 2553 8018 2553 8017
TIME...MOT...LOC 1701Z 301DEG 42KT 2559 8047 2540 8059
          2519 8098

$$

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, 12:14 PM ESTSevere Thunderstorm WarningMFLMiami-Dade31 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; the sounding from the Mesonet's radiosonde archive.