Alert archive / Florida / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 67, NWS Jacksonville, FL

April 25, 2021Baker County, Columbia County, Suwannee County, Florida

NWS Jacksonville, FL issued this severe thunderstorm warning at Apr 25, 2021, 2:06 AM EDT for Baker County, Columbia County, Suwannee County, Florida. It was in force for 24 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
Apr 25, 2021, 2:06 AM EDT (06:06 UTC)
Expired
Apr 25, 2021, 2:30 AM EDT
In force
24 min
Issued by
NWS Jacksonville, FL
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Baker County, FL, Columbia County, FL, Suwannee County, FL

The radar

The Moody AFB radar (KVAX), 81 km from the middle of the area, began a volume at 06:07 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 00:00Z, 6.1 hours before the alert went out and 91 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 00:00Z on 2021-04-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 64 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 00:00Z on 2021-04-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 275 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
64 J/kg
Mixed-layer CIN
-157 J/kg
Mixed-layer LCL
850 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
275 m²/s²
0-3 km storm-relative helicity
358 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.9

Open this sounding in Storm Lab

The text

As transmitted.

178 
WUUS52 KJAX 250606
SVRJAX
FLC003-023-121-250645-
/O.NEW.KJAX.SV.W.0067.210425T0606Z-210425T0645Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Jacksonville FL
206 AM EDT Sun Apr 25 2021

The National Weather Service in Jacksonville has issued a

* Severe Thunderstorm Warning for...
  Southwestern Baker County in northeastern Florida...
  Central Columbia County in northern Florida...
  East central Suwannee County in northern Florida...

* Until 245 AM EDT.

* At 206 AM EDT, a severe thunderstorm was located near Wellborn, or
  8 miles west of Lake City, moving east at 50 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Lake City, Wellborn, Five Points, Watertown, Winfield, Olustee,
  Suwannee Valley and Sanderson.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3026 8290 3045 8222 3017 8215 3008 8286
TIME...MOT...LOC 0606Z 255DEG 45KT 3018 8278 

HAIL...1.00IN
WIND...60MPH
 
$$

ENYEDI
2 follow-up statements
844 
WWUS52 KJAX 250624
SVSJAX

Severe Weather Statement
National Weather Service Jacksonville FL
224 AM EDT Sun Apr 25 2021

FLC121-250634-
/O.CAN.KJAX.SV.W.0067.000000T0000Z-210425T0645Z/
Suwannee FL-
224 AM EDT Sun Apr 25 2021

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL SUWANNEE 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 3045 8222 3017 8215 3014 8241 3014 8245
      3013 8246 3009 8279 3029 8280
TIME...MOT...LOC 0624Z 270DEG 45KT 3023 8252 

$$

FLC003-023-250645-
/O.CON.KJAX.SV.W.0067.000000T0000Z-210425T0645Z/
Baker FL-Columbia FL-
224 AM EDT Sun Apr 25 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 AM EDT
FOR SOUTHWESTERN BAKER AND CENTRAL COLUMBIA COUNTIES...

At 224 AM EDT, a severe thunderstorm was located near Watertown, or 7
miles east of Lake City, moving east at 50 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Lake City, Five Points, Watertown, Winfield, Olustee, Suwannee Valley
and Sanderson.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3045 8222 3017 8215 3014 8241 3014 8245
      3013 8246 3009 8279 3029 8280
TIME...MOT...LOC 0624Z 270DEG 45KT 3023 8252 

HAIL...1.00IN
WIND...60MPH
 
$$

ENYEDI
273 
WWUS52 KJAX 250630
SVSJAX

Severe Weather Statement
National Weather Service Jacksonville FL
230 AM EDT Sun Apr 25 2021

FLC003-023-250640-
/O.CAN.KJAX.SV.W.0067.000000T0000Z-210425T0645Z/
Baker FL-Columbia FL-
230 AM EDT Sun Apr 25 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN BAKER AND CENTRAL
COLUMBIA COUNTIES IS CANCELLED...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been cancelled.  However gusty winds and heavy rain are still
possible with this thunderstorm.

LAT...LON 3045 8222 3017 8215 3014 8241 3014 8245
      3013 8246 3009 8279 3029 8280
TIME...MOT...LOC 0629Z 255DEG 45KT 3025 8242 

$$

ENYEDI

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 24, 11:32 PM EDTSpecial Marine WarningJAX118 min
Apr 25, 12:26 AM EDTSpecial Weather StatementJAXNassau34 min
Apr 25, 12:41 AM EDTSpecial Weather StatementJAXHamilton49 min
Apr 25, 1:03 AM EDTSpecial Weather StatementJAXSuwannee42 min
Apr 25, 1:15 AM EDTSevere Thunderstorm WarningJAXBaker, Columbia, Hamilton23 min
Apr 25, 1:30 AM EDTSpecial Marine WarningJAX90 min
Apr 25, 1:42 AM EDTSpecial Weather StatementJAXColumbia, Suwannee48 min
Apr 25, 2:01 AM EDTSpecial Weather StatementJAXNassau44 min
Apr 25, 2:12 AM EDTSevere Thunderstorm WarningJAXDuval, Nassau36 min
Apr 25, 2:23 AM EDTSpecial Weather StatementJAXBaker, Columbia, Union52 min
Apr 25, 2:29 AM EDTSpecial Marine WarningJAX91 min
Apr 25, 2:49 AM EDTSpecial Weather StatementJAXDuval41 min
Apr 25, 2:52 AM EDTSpecial Marine WarningJAX38 min
Apr 25, 2:55 AM EDTSpecial Weather StatementJAXBradford, Clay, Union50 min
Apr 25, 3:18 AM EDTSpecial Weather StatementJAXClay, Saint Johns42 min
Apr 25, 3:36 AM EDTSpecial Marine WarningJAX54 min
Apr 25, 3:59 AM EDTSpecial Weather StatementJAXClay, Saint Johns46 min
Apr 25, 4:23 AM EDTSpecial Marine WarningJAX3 hr
Apr 25, 4:28 AM EDTSpecial Weather StatementJAXPutnam47 min
Apr 25, 5:10 AM EDTSpecial Weather StatementJAXSaint Johns50 min
Apr 25, 6:20 AM EDTSpecial Weather StatementJAXFlagler40 min
Apr 25, 7:01 AM EDTSpecial Weather StatementJAXFlagler14 min
Apr 25, 7:13 AM EDTSpecial Weather StatementJAXMarion47 min
Apr 25, 7:29 AM EDTSpecial Marine WarningJAX61 min
Apr 25, 8:06 AM EDTSpecial Weather StatementJAXLake24 min

Nearby

Severe Thunderstorm Warnings in Florida, 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.