Alert archive / Florida / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 13, NWS Miami, FL

March 17, 2003Broward County, Miami-Dade County, Florida

NWS Miami, FL issued this severe thunderstorm warning at Mar 17, 2003, 3:21 AM EST for Broward County, Miami-Dade County, Florida. It was in force for 39 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 17, 2003, 3:21 AM EST (08:21 UTC)
Expired
Mar 17, 2003, 4:00 AM EST
In force
39 min
Issued by
NWS Miami, FL
Area
Counties, with a storm outline in the text

Counties Broward County, FL, Miami-Dade County, FL

The radar

The Miami radar (KAMX), 45 km from the middle of the area, began a volume at 08:24 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.

The nearest sounding before it

Miami, FL (KMFL), launched 00:00Z, 8.4 hours before the alert went out and 18 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 00:00Z on 2003-03-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 919 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Miami, FL at 00:00Z on 2003-03-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -86 square meters per square second.19395878Sfc1 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
919 J/kg
Mixed-layer CIN
-19 J/kg
Mixed-layer LCL
973 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
-86 m²/s²
0-3 km storm-relative helicity
153 m²/s²
Significant tornado parameter
-0.4
Supercell composite
-3.1

Open this sounding in Storm Lab

The text

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

601 
WUUS52 KMFL 170821
SVRMIA
FLC011-086-170900-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
321 AM EST MON MAR 17 2003

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN BROWARD COUNTY IN SOUTHEAST FLORIDA
  EXTREME NORTHEASTERN MIAMI-DADE COUNTY IN SOUTHEAST FLORIDA

* UNTIL 400 AM EST

* AT 321 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH DAMAGING WINDS OVER OPA-LOCKA...MOVING
  NORTHEAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  PRO PLAYER STADIUM BY 325 AM EST
  PEMBROKE PARK BY 330 AM EST
  DANIA BEACH BY 335 AM EST
  PORT EVERGLADES BY 345 AM EST
  WILTON MANORS BY 350 AM EST

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH YOU SHOULD PREPARE 
FOR DAMAGING WIND TO NEAR 60 MPH AND DEADLY LIGHTNING. PEOPLE 
OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY INSIDE A STRONG 
BUILDING BUT AWAY FROM WINDOWS.

LAT...LON 2586 8030 2582 8022 2609 7996 2616 8017

.END

HANDEL

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 16, 8:52 PM ESTSpecial Marine WarningMFL53 min
Mar 16, 11:53 PM ESTSpecial Marine WarningMFL2 hr
Mar 17, 1:08 AM ESTSevere Thunderstorm WarningMFLCollier, Monroe52 min
Mar 17, 1:18 AM ESTSpecial Marine WarningMFL87 min
Mar 17, 1:24 AM ESTSevere Thunderstorm WarningMFLMonroe66 min
Mar 17, 1:39 AM ESTTornado WarningMFLMonroe66 min
Mar 17, 2:06 AM ESTSpecial Marine WarningMFL54 min
Mar 17, 1:43 PM ESTTornado WarningMFLMiami-Dade62 min
Mar 17, 2:08 PM ESTSpecial Marine WarningMFL2 hr
Mar 17, 2:17 PM ESTSpecial Marine WarningMFL88 min
Mar 17, 2:52 PM ESTSevere Thunderstorm WarningMFLBroward, Miami-Dade53 min
Mar 17, 3:44 PM ESTSevere Thunderstorm WarningMFLPalm Beach31 min
Mar 17, 3:44 PM ESTSevere Thunderstorm WarningMFLBroward, Miami-Dade46 min
Mar 17, 3:53 PM ESTSpecial Marine WarningMFL67 min
Mar 17, 5:10 PM ESTSpecial Marine WarningMFL65 min
Mar 17, 6:37 PM ESTSpecial Marine WarningMFL53 min

Nearby

Severe Thunderstorm Warnings in Florida, 2003Every severe thunderstorm warning in 2003

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; radar from the NEXRAD Level II archive.