Alert archive / Georgia / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 109, NWS Jacksonville, FL

May 28, 20204 counties in Georgia

NWS Jacksonville, FL issued this severe thunderstorm warning at May 28, 2020, 6:10 PM EDT for 4 counties in Georgia. It was in force for 50 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 28, 2020, 6:10 PM EDT (22:10 UTC)
Expired
May 28, 2020, 7:00 PM EDT
In force
50 min
Issued by
NWS Jacksonville, FL
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Atkinson County, GA, Bacon County, GA, Coffee County, GA, Ware County, GA

The radar

The Moody AFB radar (KVAX), 62 km from the middle of the area, began a volume at 22:13 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

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 10.2 hours before the alert went out and 283 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, Peachtre/Fal Fld, GA at 12:00Z on 2020-05-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 528 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, Peachtre/Fal Fld, GA at 12:00Z on 2020-05-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 93 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
528 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
525 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
93 m²/s²
0-3 km storm-relative helicity
170 m²/s²
Significant tornado parameter
0.2
Supercell composite
2.0

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 Jacksonville, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at May 28, 1:28 PM EDT, 4 hours 42 minutes earlier.

Area forecast discussion, May 28, 1:28 PM EDT, 4 hours 42 minutes before
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In the hours before

Local storm report, May 28, 4:49 PM EDT, 1 hour 21 minutes before
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Special weather statement, May 28, 4:58 PM EDT, 1 hour 12 minutes before
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Special weather statement, May 28, 5:25 PM EDT, 45 minutes before
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Local storm report, May 28, 5:28 PM EDT, 42 minutes before
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Special weather statement, May 28, 5:30 PM EDT, 40 minutes before
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Local storm report, May 28, 5:53 PM EDT, 17 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTED
National Weather Service Jacksonville FL
553 PM EDT THU MAY 28 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0530 PM     HEAVY RAIN       3 N FLEMINGTON          29.46N 82.30W
05/28/2020  M2.50 INCH       Marion             FL   COCORAHS

            COCORAHS RAIN GAUGE REPORT OF 2.5 INCHES OF RAIN DURING A
            45 MINUTE TIME SPAN IN NORTHERN MARION COUNTY.

&&

NELSON

The office that day

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

IssuedProductOfficeCountiesLasted
May 28, 1:29 PM EDTSpecial Weather StatementJAXBradford31 min
May 28, 1:38 PM EDTSpecial Weather StatementJAXPutnam37 min
May 28, 1:40 PM EDTSpecial Weather StatementJAXMarion35 min
May 28, 1:58 PM EDTSpecial Weather StatementJAXPutnam32 min
May 28, 2:00 PM EDTSpecial Weather StatementJAXClay30 min
May 28, 2:01 PM EDTSpecial Weather StatementJAXDuval29 min
May 28, 2:22 PM EDTSpecial Weather StatementJAXClay23 min
May 28, 2:25 PM EDTSpecial Weather StatementJAXPutnam50 min
May 28, 2:29 PM EDTSpecial Weather StatementJAXSaint Johns31 min
May 28, 2:31 PM EDTSpecial Marine WarningJAX59 min
May 28, 2:37 PM EDTSpecial Weather StatementJAXMarion53 min
May 28, 2:50 PM EDTSpecial Weather StatementJAXClay25 min
May 28, 2:53 PM EDTSevere Thunderstorm WarningJAXClay, Duval23 min
May 28, 3:05 PM EDTSpecial Weather StatementJAXFlagler, Saint Johns40 min
May 28, 3:10 PM EDTSpecial Weather StatementJAXDuval35 min
May 28, 3:14 PM EDTSevere Thunderstorm WarningJAXSaint Johns46 min
May 28, 3:19 PM EDTSpecial Weather StatementJAXDuval26 min
May 28, 3:21 PM EDTSpecial Marine WarningJAX54 min
May 28, 3:46 PM EDTSpecial Weather StatementJAXFlagler44 min
May 28, 4:06 PM EDTSpecial Marine WarningJAX84 min
May 28, 4:24 PM EDTSpecial Weather StatementJAXAlachua51 min
May 28, 4:58 PM EDTSpecial Weather StatementJAXMarion47 min
May 28, 5:30 PM EDTSpecial Weather StatementJAXAlachua, Gilchrist, Suwannee45 min
May 28, 6:29 PM EDTSpecial Weather StatementJAXColumbia46 min
May 28, 5:25 PM EDTSpecial Weather StatementJAXAtkinson, Bacon, Clinch50 min
May 28, 6:47 PM EDTSpecial Weather StatementJAXClinch, Echols43 min
May 28, 6:58 PM EDTSpecial Weather StatementJAXAtkinson, Coffee47 min
May 28, 7:27 PM EDTSpecial Weather StatementJAXWare48 min
May 28, 7:47 PM EDTSpecial Weather StatementJAXClinch43 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2020Every severe thunderstorm warning in 2020

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.