Alert archive / Florida / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 52, NWS Miami, FL

July 23, 2001Collier County, Florida

NWS Miami, FL issued this severe thunderstorm warning at Jul 23, 2001, 11:37 AM EDT for Collier County, Florida. It was in force for 53 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, 11:37 AM EDT (15:37 UTC)
Expired
Jul 23, 2001, 12:30 PM EDT
In force
53 min
Issued by
NWS Miami, FL
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Collier County, FL

The nearest sounding before it

Miami, FL (KMFL), launched 12:00Z, 3.6 hours before the alert went out and 124 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 2001-07-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2135 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 2001-07-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -71 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
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 231539
SVRMIA

FLC021-231630-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
1137 AM EDT MON JUL 23 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN COLLIER COUNTY IN SOUTHWEST FLORIDA

* UNTIL 1230 PM EDT

* AT 1137 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SERIES OF THUNDERSTORMS OVER THE COLLIER COUNTY COASTAL WATERS     
  MOVING NORTHEAST AT 30 MPH. THESE STORMS WILL LIKELY PRODUCE WIND  
  GUSTS NEAR 60 MPH AS THEY MOVE ONSHORE FROM JUST WEST OF           
  EVERGLADES CITY TO MARCO ISLAND.

FREQUENT LIGHTNING...VERY HEAVY RAIN AND STRONG DAMAGING WINDS ARE 
LIKELY WITH THESE STORMS. TAKE COVER IN A SUBSTANTIAL SHELTER.

FREQUENT LIGHTNING IS OCCURRING WITH THESE STORMS. IF OUTDOORS... 
STAY AWAY FROM ISOLATED HIGH OBJECTS SUCH AS TREES. MOVE INDOORS IF 
POSSIBLE. WHEN INDOORS...STAY AWAY FROM WINDOWS AND DOORS AND AVOID 
USING TELEPHONES UNLESS IT IS AN EMERGENCY. TRY TO UNPLUG 
UNNECESSARY ELECTRICAL APPLIANCES BEFORE THE THUNDERSTORMS APPROACH.

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. OR YOU CAN ALSO CALL
THE NATIONAL WEATHER SERVICE DIRECTLY AT 305 229 4522 TO REPORT
SEVERE WEATHER.

LAT...LON 2588 8175 2575 8160 2611 8113 2630 8134

.END

WARNER

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 23, 9:30 AM EDTSevere Thunderstorm WarningMFLCollier60 min
Jul 23, 10:36 AM EDTSevere Thunderstorm WarningMFLBroward, Palm Beach39 min
Jul 23, 10:45 AM EDTSevere Thunderstorm WarningMFLCollier45 min
Jul 23, 1:44 PM EDTSevere Thunderstorm WarningMFLCollier31 min
Jul 23, 2:37 PM EDTSevere Thunderstorm WarningMFLPalm Beach38 min
Jul 23, 3:02 PM EDTTornado WarningMFLBroward28 min
Jul 23, 3:13 PM EDTSevere Thunderstorm WarningMFLBroward, Miami-Dade47 min
Jul 23, 3:13 PM EDTTornado WarningMFLBroward, Palm Beach62 min
Jul 23, 4:10 PM EDTSevere Thunderstorm WarningMFLBroward, Palm Beach65 min
Jul 23, 5:03 PM EDTSevere Thunderstorm WarningMFLMiami-Dade57 min
Jul 23, 5:40 PM EDTSevere Thunderstorm WarningMFLBroward, Palm Beach65 min
Jul 23, 6:07 PM EDTSevere Thunderstorm WarningMFLBroward, Miami-Dade53 min

Nearby

Severe Thunderstorm Warnings in Florida, 2001Every 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.