Alert archive / Florida / Special Weather Statements in 2021

Special Weather Statement, NWS Mobile, AL

July 15, 2021Okaloosa County, Florida

NWS Mobile, AL issued this special weather statement at Jul 15, 2021, 3:04 PM CDT for Okaloosa 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, 3:04 PM CDT (20:04 UTC)
Expired
Jul 15, 2021, 3:45 PM CDT
In force
41 min
Issued by
NWS Mobile, AL

County Okaloosa County, FL

The radar

The Eglin Afb radar (KEVX), 59 km from the middle of the area, began a volume at 19:46 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, 8.1 hours before the alert went out and 216 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.

125 
WWUS84 KMOB 152004
SPSMOB

Special Weather Statement
National Weather Service Mobile AL
304 PM CDT Thu Jul 15 2021
 
FLZ205-206-152045-
Okaloosa Inland FL-Okaloosa Coastal FL-
304 PM CDT Thu Jul 15 2021

...A STRONG THUNDERSTORM WILL AFFECT THE FOLLOWING COUNTIES...EASTERN
OKALOOSA COUNTY UNTIL 345 PM CDT...

At 302 PM CDT, the strong thunderstorm was located 6 miles north of
Valparaiso, moving north at 5 mph.

Wind gusts in excess of 30 mph will be possible with this storm.

Locations impacted include...
Crestview and Niceville. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

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.

&&

LAT...LON 3051 8657 3050 8666 3081 8667 3088 8650
      3080 8639 3051 8639
TIME...MOT...LOC 2002Z 191DEG 6KT 3060 8654 

$$

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, 6:49 PM CDTSpecial Weather StatementMOBSanta Rosa41 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.