Alert archive / Florida / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 3, NWS Jacksonville, FL

January 27, 2021Baker County, Columbia County, Florida; Charlton County, Georgia

NWS Jacksonville, FL issued this severe thunderstorm warning at Jan 27, 2021, 2:34 PM EST for Baker County, Columbia County, Florida; Charlton County, Georgia. 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
Jan 27, 2021, 2:34 PM EST (19:34 UTC)
Expired
Jan 27, 2021, 3:15 PM EST
In force
41 min
Issued by
NWS Jacksonville, FL
Area
Storm-based polygon
Tornado
Possible
Hail
0.75 in
Wind
60.0 mph

Counties Baker County, FL, Columbia County, FL, Charlton County, GA

The radar

The Jacksonville radar (KJAX), 66 km from the middle of the area, began a volume at 19:35 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

Jacksonville, FL (KJAX), launched 12:00Z, 7.6 hours before the alert went out and 67 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, Jacksonville, FL at 12:00Z on 2021-01-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 88 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, Jacksonville, FL at 12:00Z on 2021-01-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 104 square meters per square second.1939587897Sfc1 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
88 J/kg
Mixed-layer CIN
-101 J/kg
Mixed-layer LCL
456 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
104 m²/s²
0-3 km storm-relative helicity
181 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

As transmitted.

219 
WUUS52 KJAX 271934
SVRJAX
FLC003-023-GAC049-272015-
/O.NEW.KJAX.SV.W.0003.210127T1934Z-210127T2015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Jacksonville FL
234 PM EST Wed Jan 27 2021

The National Weather Service in Jacksonville has issued a

* Severe Thunderstorm Warning for...
  Central Baker County in northeastern Florida...
  Northeastern Columbia County in northern Florida...
  South central Charlton County in southeastern Georgia...

* Until 315 PM EST.

* At 233 PM EST, a severe thunderstorm was located 8 miles northeast
  of Five Points, or 10 miles northeast of Lake City, moving east at
  40 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Taylor, Macclenny, Glen St. Mary and Sanderson. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in Jacksonville.

Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. This storm may cause serious injury and significant
property damage.

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

&&

LAT...LON 3024 8258 3045 8255 3045 8206 3020 8205
TIME...MOT...LOC 1933Z 270DEG 34KT 3031 8254 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

KB
1 follow-up statement
752 
WWUS52 KJAX 271958
SVSJAX

Severe Weather Statement
National Weather Service Jacksonville FL
258 PM EST Wed Jan 27 2021

FLC023-272008-
/O.CAN.KJAX.SV.W.0003.000000T0000Z-210127T2015Z/
Columbia FL-
258 PM EST Wed Jan 27 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN COLUMBIA COUNTY
IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 3023 8242 3045 8236 3045 8206 3020 8205
TIME...MOT...LOC 1958Z 270DEG 34KT 3031 8227 

$$

FLC003-GAC049-272015-
/O.CON.KJAX.SV.W.0003.000000T0000Z-210127T2015Z/
Baker FL-Charlton GA-
258 PM EST Wed Jan 27 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM EST
FOR CENTRAL BAKER AND SOUTH CENTRAL CHARLTON COUNTIES...

At 258 PM EST, a severe thunderstorm was located near Sanderson, or
17 miles north of Raiford, moving east at 40 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Taylor, Macclenny, Glen St. Mary and Sanderson. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Jacksonville.

Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. This storm may cause serious injury and significant
property damage.

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

&&

LAT...LON 3023 8242 3045 8236 3045 8206 3020 8205
TIME...MOT...LOC 1958Z 270DEG 34KT 3031 8227 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

KB

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 27, 1:58 AM ESTDense Fog AdvisoryJAXAlachua, Bradford, Flagler, Marion7 hr
Jan 27, 2:02 AM ESTGale WarningJAX36 hr
Jan 27, 2:02 AM ESTSmall Craft AdvisoryJAX19 hr
Jan 27, 12:39 PM ESTSpecial Weather StatementJAXHamilton36 min
Jan 27, 12:57 PM ESTSevere Thunderstorm WarningJAXHamilton, Suwannee48 min
Jan 27, 1:42 PM ESTSevere Thunderstorm WarningJAXColumbia, Hamilton, Suwannee63 min
Jan 27, 1:47 PM ESTTornado WarningJAXHamilton, Suwannee28 min
Jan 27, 2:04 PM ESTTornado WarningJAXColumbia, Hamilton, Suwannee41 min
Jan 27, 3:06 PM ESTSpecial Weather StatementJAXGilchrist54 min
Jan 27, 3:12 PM ESTSevere Thunderstorm WarningJAXBaker, Clay, Duval, Nassau63 min
Jan 27, 3:35 PM ESTSpecial Weather StatementJAXClay, Union40 min
Jan 27, 3:54 PM ESTSpecial Weather StatementJAXAlachua51 min
Jan 27, 3:59 PM ESTTornado WarningJAXClay, Duval, Saint Johns19 min
Jan 27, 4:04 PM ESTSpecial Marine WarningJAX86 min
Jan 27, 4:08 PM ESTSpecial Weather StatementJAXDuval37 min
Jan 27, 4:32 PM ESTSpecial Weather StatementJAXMarion58 min
Jan 27, 5:23 PM ESTSpecial Weather StatementJAXMarion37 min
Jan 27, 6:02 PM ESTSpecial Weather StatementJAXMarion43 min
Jan 26, 8:32 PM ESTSpecial Weather StatementJAXAtkinson28 min
Jan 27, 12:27 PM ESTSpecial Weather StatementJAXClinch48 min

Nearby

Severe Thunderstorm Warnings in Florida, 2021Severe Thunderstorm Warnings in Georgia, 2021Every severe thunderstorm warning 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.