Alert archive / Florida / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 46, NWS Jacksonville, FL

April 24, 2021Baker County, Columbia County, Hamilton County, Florida

NWS Jacksonville, FL issued this severe thunderstorm warning at Apr 24, 2021, 3:40 PM EDT for Baker County, Columbia County, Hamilton County, Florida. It was in force for 35 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Apr 24, 2021, 3:40 PM EDT (19:40 UTC)
Expired: Apr 24, 2021, 4:15 PM EDT
In force: 35 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon
Hail: 2.75 in
Wind: 50.0 mph

Counties Baker County, FL, Columbia County, FL, Hamilton County, FL

The radar

The Moody AFB radar (KVAX), 67 km from the middle of the area, began a volume at 19:40 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.

What was reported inside it

Time	Report	Where	Remark
Apr 24, 3:40 PM EDT	HAIL 1.75	4 Sse Belmont, FL	SOCIAL MEDIA VIDEO OF HAIL UP TO GOLF BALL SIZE HAIL FALLING NEAR 7340 SE COUNTY RD 135 IN EASTERN HAMILTON COUNTY. CROPS WERE SHREDDED AS THE LARGE HAIL FELL OVER FARMLAND AREAS.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 24, 10:35 AM EDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Jacksonville, FL (KJAX), launched 12:00Z, 7.7 hours before the alert went out and 74 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 984 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 180 m²/s²
0-3 km storm-relative helicity: 276 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

101 
WUUS52 KJAX 241940
SVRJAX
FLC003-023-047-242015-
/O.NEW.KJAX.SV.W.0046.210424T1940Z-210424T2015Z/

BULLETIN - EAS ACTIVATION REQUESTED
Severe Thunderstorm Warning
National Weather Service Jacksonville FL
340 PM EDT Sat Apr 24 2021

The National Weather Service in Jacksonville has issued a

* Severe Thunderstorm Warning for...
  Northwestern Baker County in northeastern Florida...
  Northeastern Columbia County in northern Florida...
  East central Hamilton County in northern Florida...

* Until 415 PM EDT.

* At 339 PM EDT, a severe thunderstorm was located over Belmont, or
  10 miles north of White Springs, moving east at 40 mph.

  This is a very dangerous storm.

  HAZARD...Baseball size hail.

  SOURCE...Radar indicated.

  IMPACT...People and animals outdoors will be severely injured. 
           Expect shattered windows, extensive damage to roofs, 
           siding, and vehicles.

* Locations impacted include...
  Taylor and Belmont. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 600 PM EDT for northern and
northeastern Florida...and southeastern Georgia.

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

&&

LAT...LON 3056 8276 3055 8224 3054 8224 3053 8223
      3029 8227 3040 8280
TIME...MOT...LOC 1939Z 272DEG 33KT 3048 8274 

HAIL...2.75IN
WIND...<50MPH
 
$$

BOOTHE

1 follow-up statement

327 
WWUS52 KJAX 242002
SVSJAX

Severe Weather Statement
National Weather Service Jacksonville FL
402 PM EDT Sat Apr 24 2021

FLC047-242012-
/O.CAN.KJAX.SV.W.0046.000000T0000Z-210424T2015Z/
Hamilton FL-
402 PM EDT Sat Apr 24 2021

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

A Tornado Watch remains in effect until 600 PM EDT for northern and
northeastern Florida...and southeastern Georgia.

LAT...LON 3055 8224 3054 8224 3053 8223 3029 8227
      3036 8259 3056 8258
TIME...MOT...LOC 2002Z 272DEG 33KT 3047 8249 

$$

FLC003-023-242015-
/O.CON.KJAX.SV.W.0046.000000T0000Z-210424T2015Z/
Baker FL-Columbia FL-
402 PM EDT Sat Apr 24 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM EDT
FOR NORTHWESTERN BAKER AND NORTHEASTERN COLUMBIA COUNTIES...

At 402 PM EDT, a severe thunderstorm was located 12 miles west of
Taylor, or 15 miles south of Fargo, moving east at 40 mph.

HAZARD...Golf ball size hail.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect damage 
         to roofs, siding, windows, and vehicles.

Locations impacted include...
Taylor.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 600 PM EDT for northern and
northeastern Florida...and southeastern Georgia.

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

&&

LAT...LON 3055 8224 3054 8224 3053 8223 3029 8227
      3036 8259 3056 8258
TIME...MOT...LOC 2002Z 272DEG 33KT 3047 8249 

HAIL...1.75IN
WIND...<50MPH
 
$$

BOOTHE

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 24, 1:37 PM EDT	Special Marine Warning	JAX		113 min
Apr 24, 2:36 PM EDT	Tornado Warning	JAX	Hamilton	24 min
Apr 24, 2:56 PM EDT	Severe Thunderstorm Warning	JAX	Columbia, Hamilton	49 min
Apr 24, 3:03 PM EDT	Tornado Warning	JAX	Columbia, Hamilton	27 min
Apr 24, 3:14 PM EDT	Severe Thunderstorm Warning	JAX	Columbia, Hamilton	46 min
Apr 24, 3:21 PM EDT	Special Weather Statement	JAX	Duval	24 min
Apr 24, 3:25 PM EDT	Special Marine Warning	JAX		79 min
Apr 24, 3:30 PM EDT	Severe Thunderstorm Warning	JAX	Baker, Columbia	45 min
Apr 24, 3:57 PM EDT	Severe Thunderstorm Warning	JAX	Baker, Nassau	48 min
Apr 24, 4:10 PM EDT	Severe Thunderstorm Warning	JAX	Baker, Columbia, Nassau	28 min
Apr 24, 4:18 PM EDT	Severe Thunderstorm Warning	JAX	Duval, Nassau	42 min
Apr 24, 4:44 PM EDT	Special Marine Warning	JAX		46 min
Apr 24, 5:10 PM EDT	Special Marine Warning	JAX		35 min
Apr 24, 5:20 PM EDT	Special Weather Statement	JAX	Duval	25 min
Apr 24, 5:31 PM EDT	Special Marine Warning	JAX		59 min
Apr 24, 6:11 PM EDT	Special Marine Warning	JAX		64 min

Nearby

Severe Thunderstorm Warnings in Florida, 2021 Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.