Alert archive / Florida / Special Weather Statements in 2021

Special Weather Statement, NWS Mobile, AL

July 15, 2021Santa Rosa County, Florida

NWS Mobile, AL issued this special weather statement at Jul 15, 2021, 6:49 PM CDT for Santa Rosa County, Florida. It was in force for 41 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
Jul 15, 2021, 6:49 PM CDT (23:49 UTC)
Expired
Jul 15, 2021, 7:30 PM CDT
In force
41 min
Issued by
NWS Mobile, AL

County Santa Rosa County, FL

The radar

The Eglin Afb radar (KEVX), 97 km from the middle of the area, began a volume at 23:53 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

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 11.8 hours before the alert went out and 254 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, Tallahassee Rgnl, FL at 12:00Z on 2021-07-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 977 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, Tallahassee Rgnl, FL at 12:00Z on 2021-07-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 10 square meters per square second.1939Sfc1 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
977 J/kg
Mixed-layer CIN
-36 J/kg
Mixed-layer LCL
911 m above ground
0-6 km bulk shear
4 kt
0-1 km storm-relative helicity
10 m²/s²
0-3 km storm-relative helicity
6 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

007 
WWUS84 KMOB 152349
SPSMOB

Special Weather Statement
National Weather Service Mobile AL
649 PM CDT Thu Jul 15 2021
 
FLZ203-205-160030-
Okaloosa Inland FL-Santa Rosa Inland FL-
649 PM CDT Thu Jul 15 2021

...A STRONG THUNDERSTORM WILL AFFECT THE FOLLOWING COUNTIES...WEST
CENTRAL OKALOOSA AND NORTHEASTERN SANTA ROSA COUNTIES UNTIL 730 PM
CDT...

At 649 PM CDT, the strong thunderstorm was located 9 miles east of
Roeville, or 12 miles east of Milton, moving northwest at 10 mph.

Dime size hail and wind gusts of 45 to 55 mph will be possible with
this storm.

Locations impacted include...
Milton, Point Baker and Roeville. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 3058 8693 3060 8694 3060 8697 3061 8699
      3062 8704 3069 8718 3093 8692 3069 8664
      3052 8681
TIME...MOT...LOC 2349Z 131DEG 8KT 3066 8683 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 15, 4:33 PM CDTSpecial Weather StatementMOBCovington42 min
Jul 15, 4:40 PM CDTSevere Thunderstorm WarningMOBCovington50 min
Jul 15, 4:48 PM CDTSevere Thunderstorm WarningMOBConecuh, Covington, Escambia42 min
Jul 15, 5:11 PM CDTSpecial Weather StatementMOBCovington49 min
Jul 15, 5:41 PM CDTSpecial Weather StatementMOBButler, Conecuh, Covington, Crenshaw94 min
Jul 15, 6:42 PM CDTSpecial Weather StatementMOBClarke, Conecuh, Monroe93 min
Jul 15, 3:04 PM CDTSpecial Weather StatementMOBOkaloosa41 min
Jul 15, 3:04 PM CDTSpecial Weather StatementMOBOkaloosa41 min

Nearby

Special Weather Statements in Florida, 2021Every special weather statement in 2021

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.