Alert archive / Florida / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 137, NWS Mobile, AL

July 10, 2001Santa Rosa County, Florida

NWS Mobile, AL issued this severe thunderstorm warning at Jul 10, 2001, 4:37 PM CDT for Santa Rosa County, Florida. It was in force for 38 min. 2 reports came from 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, with what was reported inside it.

The facts

Issued: Jul 10, 2001, 4:37 PM CDT (21:37 UTC)
Expired: Jul 10, 2001, 5:15 PM CDT
In force: 38 min
Issued by: NWS Mobile, AL
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Santa Rosa County, FL

What was reported inside it

Time	Report	Where	Remark
Jul 10, 4:50 PM CDT	Thunderstorm Wind 52 E	Gulf Breeze, FL	A wind gust of near 60 mph was estimated at a local market during a thunderstorm in Gulf Breeze. No damage was reported from the high winds.
Jul 10, 4:55 PM CDT	Thunderstorm Wind 55 M	Pensacola Beach, FL	A wind gust of 63 mph was measured by EMA wind equipment during a thunderstorm on Pensacola Beach. No damage was found as a result of the high winds.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 9.6 hours before the alert went out and 241 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: 1535 J/kg
Mixed-layer CIN: -27 J/kg
Mixed-layer LCL: 869 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: -35 m²/s²
0-3 km storm-relative helicity: -35 m²/s²
Significant tornado parameter: -0.1
Supercell composite: -0.7

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KMOB 102138
SVRMOB

ALC003-FLC033-113-102215-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
437 PM CDT TUE JUL 10 2001

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN BALDWIN COUNTY IN SOUTHWEST ALABAMA
  SOUTHERN ESCAMBIA COUNTY IN NORTHWEST FLORIDA
  SOUTHERN SANTA ROSA COUNTY IN NORTHWEST FLORIDA

* UNTIL 515 PM CDT

* AT 437 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  A CLUSTER SEVERE THUNDERSTORMS FROM 3 MILES SOUTH OF ELBERTA       
  TO NAVARRE BEACH MOVING EAST AT 20 MPH.

STRONG DAMAGING WIND...LARGE HAIL AND DEADLY LIGHTNING ARE LIKELY 
WITH THESE STORMS.  IF IN THE PATH OF THESE STORMS...TAKE COVER IN A 
STURDY SHELTER UNTIL THE STORMS HAVE PASSED.

LAT...LON 3045 8690 3044 8731 3044 8779 3030 8740
          3032 8689 3033 8684

The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 10, 4:37 PM CDT	Severe Thunderstorm Warning	MOB	Escambia	38 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.