Alert archive / Florida / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 128, NWS Tallahassee, FL

May 15, 2022Washington County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at May 15, 2022, 1:39 PM CDT for Washington County, Florida. It was in force for 36 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
May 15, 2022, 1:39 PM CDT (18:39 UTC)
Expired
May 15, 2022, 2:15 PM CDT
In force
36 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Washington County, FL

The radar

The Eglin Afb radar (KEVX), 25 km from the middle of the area, began a volume at 18:40 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

Birmingham, AL (KBMX), launched 12:00Z, 6.7 hours before the alert went out and 304 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, Birmingham, AL at 12:00Z on 2022-05-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 671 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, Birmingham, AL at 12:00Z on 2022-05-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 7 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
671 J/kg
Mixed-layer CIN
-48 J/kg
Mixed-layer LCL
1009 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
7 m²/s²
0-3 km storm-relative helicity
68 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Tallahassee, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at May 15, 1:01 PM CDT, 38 minutes earlier.

Area forecast discussion, May 15, 1:01 PM CDT, 38 minutes before
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In the hours before

Special weather statement, May 15, 11:11 AM CDT, 2 hours 28 minutes before
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Special weather statement, May 15, 11:33 AM CDT, 2 hours 6 minutes before
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Special weather statement, May 15, 12:59 PM CDT, 40 minutes before
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Special weather statement, May 15, 1:10 PM CDT, 29 minutes before
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Special weather statement, May 15, 1:15 PM CDT, 24 minutes before
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Special weather statement, May 15, 1:22 PM CDT, 17 minutes before
Special Weather Statement
National Weather Service Tallahassee FL
122 PM CDT Sun May 15 2022

FLZ008-108-151900-
Central Walton FL-South Walton FL-
122 PM CDT Sun May 15 2022

...A strong thunderstorm will impact portions of southwestern Walton
County through 200 PM CDT...

At 122 PM CDT, Doppler radar was tracking a strong thunderstorm near
Eglin Air Force Base, or 9 miles north of Santa Rosa Beach, moving
southwest at 10 mph.

HAZARD...Winds in excess of 40 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Santa Rosa Beach, Eglin Air Force Base, Freeport, Portland, Villa
Tasso, Gulf Pines, New Home, Blue Mountain Beach, Rock Hill,
Sandestin, Miramar Beach and Four Mile Village.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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

&&

LAT...LON 3038 8633 3045 8631 3047 8631 3048 8632
      3046 8639 3070 8639 3062 8607 3043 8614
      3043 8615 3045 8616 3047 8613 3046 8619
      3042 8622 3040 8621 3038 8616 3030 8619
      3036 8640 3040 8639
TIME...MOT...LOC 1822Z 034DEG 9KT 3051 8626

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH

The office that day

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

IssuedProductOfficeCountiesLasted
May 15, 11:11 AM CDTSpecial Weather StatementTAECalhoun34 min
May 15, 11:33 AM CDTSpecial Weather StatementTAECalhoun42 min
May 15, 12:19 PM CDTSevere Thunderstorm WarningTAEBay, Calhoun, Gulf26 min
May 15, 12:38 PM CDTSevere Thunderstorm WarningTAEBay, Calhoun, Gulf22 min
May 15, 12:59 PM CDTSpecial Weather StatementTAEGulf46 min
May 15, 1:10 PM CDTSpecial Weather StatementTAEHolmes50 min
May 15, 1:15 PM CDTSpecial Weather StatementTAELiberty45 min
May 15, 1:22 PM CDTSpecial Weather StatementTAEWalton38 min
May 15, 1:27 PM CDTSpecial Marine WarningTAE63 min
May 15, 2:00 PM CDTSpecial Weather StatementTAELiberty, Wakulla45 min
May 15, 2:34 PM CDTSpecial Weather StatementTAEWakulla41 min
May 15, 3:05 PM CDTSpecial Weather StatementTAEGadsden40 min
May 15, 3:42 PM CDTSpecial Weather StatementTAEJefferson48 min
May 14, 8:33 PM CDTSpecial Weather StatementTAEGrady42 min
May 15, 3:25 PM CDTSevere Thunderstorm WarningTAEDecatur32 min
May 15, 3:48 PM CDTAreal Flood AdvisoryTAEDecatur117 min
May 15, 3:56 PM CDTSpecial Weather StatementTAEClay49 min
May 15, 5:58 PM CDTSpecial Weather StatementTAELowndes32 min
May 15, 6:23 PM CDTSevere Thunderstorm WarningTAELanier, Lowndes52 min
May 15, 6:44 PM CDTAreal Flood AdvisoryTAELanier, Lowndes2 hr

Nearby

Severe Thunderstorm Warnings in Florida, 2022Every severe thunderstorm warning in 2022

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.