Alert archive / Florida / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 56, NWS Miami, FL

July 23, 2001Broward County, Palm Beach County, Florida

NWS Miami, FL issued this severe thunderstorm warning at Jul 23, 2001, 4:10 PM EDT for Broward County, Palm Beach County, Florida. It was in force for 65 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: Jul 23, 2001, 4:10 PM EDT (20:10 UTC)
Expired: Jul 23, 2001, 5:15 PM EDT
In force: 65 min
Issued by: NWS Miami, FL
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Broward County, FL, Palm Beach County, FL

The radar

The Miami radar (KAMX), 103 km from the middle of the area, began a volume at 20:14 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 12:00Z, 8.2 hours before the alert went out and 79 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2135 J/kg
Mixed-layer CIN: -28 J/kg
Mixed-layer LCL: 874 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: -71 m²/s²
0-3 km storm-relative helicity: 66 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WUUS52 KMFL 232013
SVRMIA

FLC011-099-232115-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
410 PM EDT MON JUL 23 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN BROWARD COUNTY IN SOUTHEAST FLORIDA
  EASTERN PALM BEACH COUNTY IN SOUTHEAST FLORIDA

* UNTIL 515 PM EDT

* AT 410 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
SEVERE THUNDERSTORM WITH DAMAGING WINDS OVER NORTHEAST PALM BEACH 
COUNTY NORTH OF DELRAY BEACH...AND OVER EAST CENTRAL BROWARD COUNTY 
BETWEEN MORAMAR AND HOLLYWOOD.

IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY BUILDING
AWAY FROM WINDOWS. REMEMBER...A SEVERE THUNDERSTORM CAN PRODUCE LARGE
DAMAGING HAIL...DAMAGING WINDS IN EXCESS OF 55 MPH...DEADLY
LIGHTNING...AND VERY HEAVY RAIN.

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

LAT...LON 2626 8046 2625 8009 2695 8009 2695 8035

.END

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 23, 9:30 AM EDT	Severe Thunderstorm Warning	MFL	Collier	60 min
Jul 23, 10:36 AM EDT	Severe Thunderstorm Warning	MFL	Broward, Palm Beach	39 min
Jul 23, 10:45 AM EDT	Severe Thunderstorm Warning	MFL	Collier	45 min
Jul 23, 11:37 AM EDT	Severe Thunderstorm Warning	MFL	Collier	53 min
Jul 23, 1:44 PM EDT	Severe Thunderstorm Warning	MFL	Collier	31 min
Jul 23, 2:37 PM EDT	Severe Thunderstorm Warning	MFL	Palm Beach	38 min
Jul 23, 3:02 PM EDT	Tornado Warning	MFL	Broward	28 min
Jul 23, 3:13 PM EDT	Severe Thunderstorm Warning	MFL	Broward, Miami-Dade	47 min
Jul 23, 3:13 PM EDT	Tornado Warning	MFL	Broward, Palm Beach	62 min
Jul 23, 5:03 PM EDT	Severe Thunderstorm Warning	MFL	Miami-Dade	57 min
Jul 23, 5:40 PM EDT	Severe Thunderstorm Warning	MFL	Broward, Palm Beach	65 min
Jul 23, 6:07 PM EDT	Severe Thunderstorm Warning	MFL	Broward, Miami-Dade	53 min

Nearby

Severe Thunderstorm Warnings in Florida, 2001 Every severe thunderstorm warning in 2001

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.