Alert archive / Florida / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 6, NWS Jacksonville, FL

February 6, 20215 counties in Florida

NWS Jacksonville, FL issued this severe thunderstorm warning at Feb 6, 2021, 4:59 PM EST for 5 counties in Florida. It was in force for 46 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: Feb 6, 2021, 4:59 PM EST (21:59 UTC)
Expired: Feb 6, 2021, 5:45 PM EST
In force: 46 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Alachua County, FL, Bradford County, FL, Columbia County, FL, Gilchrist County, FL, Union County, FL

The radar

The Jacksonville radar (KJAX), 122 km from the middle of the area, began a volume at 21:59 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
Feb 6, 5:10 PM EST	HAIL 1	Alachua, FL	MEDIA RELAYED REPORT OF ONE QUARTER INCH HAIL IN THE CITY OF ALACHUA.

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
Feb 6, 4:21 PM EST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Jacksonville, FL (KJAX), launched 12:00Z, 10.0 hours before the alert went out and 124 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: 845 m above ground
0-6 km bulk shear: 75 kt
0-1 km storm-relative helicity: 45 m²/s²
0-3 km storm-relative helicity: 370 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

867 
WUUS52 KJAX 062159
SVRJAX
FLC001-007-023-041-125-062245-
/O.NEW.KJAX.SV.W.0006.210206T2159Z-210206T2245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Jacksonville FL
459 PM EST Sat Feb 6 2021

The National Weather Service in Jacksonville has issued a

* Severe Thunderstorm Warning for...
  Gilchrist County in northern Florida...
  Bradford County in northern Florida...
  Northern Alachua County in northern Florida...
  Southern Union County in northern Florida...
  South central Columbia County in northern Florida...

* Until 545 PM EST.

* At 459 PM EST, a severe thunderstorm was located near High Springs,
  or 13 miles east of Bell, moving northeast at 55 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...
  Starke, Trenton, Lake Butler, Bell, Raiford, Worthington Spring,
  Alachua, High Springs, Worthington Springs and Groves.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until midnight EST for northern
Florida.

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

&&

LAT...LON 2978 8291 2999 8249 3014 8205 2979 8208
      2957 8270 2956 8276 2958 8276 2959 8283
      2964 8290
TIME...MOT...LOC 2159Z 244DEG 48KT 2976 8264 

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

SHASHY

3 follow-up statements

067 
WWUS52 KJAX 062208
SVSJAX

Severe Weather Statement
National Weather Service Jacksonville FL
508 PM EST Sat Feb 6 2021

FLC001-007-023-041-125-062245-
/O.CON.KJAX.SV.W.0006.000000T0000Z-210206T2245Z/
Gilchrist FL-Bradford FL-Alachua FL-Union FL-Columbia FL-
508 PM EST Sat Feb 6 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM EST
FOR GILCHRIST...BRADFORD...NORTHERN ALACHUA...SOUTHERN UNION AND
SOUTH CENTRAL COLUMBIA COUNTIES...

At 508 PM EST, a severe thunderstorm was located near High Springs,
or 11 miles southwest of Worthington Spring, moving northeast at 55
mph.

HAZARD...Quarter size hail.

SOURCE...Radar indicated.

IMPACT...Damage to vehicles is expected.

Locations impacted include...
Starke, Trenton, Lake Butler, Bell, Raiford, Worthington Spring,
Alachua, High Springs, Worthington Springs and Groves.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until midnight EST for northern
Florida.

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

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

&&

LAT...LON 2979 8289 2999 8249 3014 8205 2979 8208
      2957 8270 2956 8276 2958 8276 2959 8283
TIME...MOT...LOC 2208Z 244DEG 48KT 2980 8255 

HAIL...1.00IN
WIND...<50MPH
 
$$

SHASHY

754 
WWUS52 KJAX 062223
SVSJAX

Severe Weather Statement
National Weather Service Jacksonville FL
523 PM EST Sat Feb 6 2021

FLC023-041-062233-
/O.CAN.KJAX.SV.W.0006.000000T0000Z-210206T2245Z/
Gilchrist FL-Columbia FL-
523 PM EST Sat Feb 6 2021

...THE SEVERE THUNDERSTORM WARNING FOR GILCHRIST AND SOUTH CENTRAL
COLUMBIA COUNTIES 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 midnight EST for northern
Florida.

LAT...LON 2999 8249 3014 8205 2979 8208 2967 8241
      2972 8258 2987 8259
TIME...MOT...LOC 2223Z 245DEG 42KT 2986 8242 

$$

FLC001-007-125-062245-
/O.CON.KJAX.SV.W.0006.000000T0000Z-210206T2245Z/
Bradford FL-Alachua FL-Union FL-
523 PM EST Sat Feb 6 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM EST
FOR BRADFORD...NORTHERN ALACHUA AND SOUTHERN UNION COUNTIES...

At 523 PM EST, a severe thunderstorm was located near Worthington
Spring, moving northeast at 50 mph.

HAZARD...Quarter size hail.

SOURCE...Radar indicated.

IMPACT...Damage to vehicles is expected.

Locations impacted include...
Starke, Lake Butler, Raiford, Worthington Spring, Alachua, High
Springs, Worthington Springs, Groves, New River and Beasley.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until midnight EST for northern
Florida.

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

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

&&

LAT...LON 2999 8249 3014 8205 2979 8208 2967 8241
      2972 8258 2987 8259
TIME...MOT...LOC 2223Z 245DEG 42KT 2986 8242 

HAIL...1.00IN
WIND...<50MPH
 
$$

SHASHY

126 
WWUS52 KJAX 062243
SVSJAX

Severe Weather Statement
National Weather Service Jacksonville FL
543 PM EST Sat Feb 6 2021

FLC001-007-125-062252-
/O.EXP.KJAX.SV.W.0006.000000T0000Z-210206T2245Z/
Bradford FL-Alachua FL-Union FL-
543 PM EST Sat Feb 6 2021

...THE SEVERE THUNDERSTORM WARNING FOR BRADFORD...NORTHERN ALACHUA
AND SOUTHERN UNION COUNTIES WILL EXPIRE AT 545 PM EST...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However small hail
and heavy rain are still possible with this thunderstorm.

A Tornado Watch remains in effect until midnight EST for northern
Florida.

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

LAT...LON 2999 8249 3014 8205 2979 8208 2967 8241
      2972 8258 2987 8259
TIME...MOT...LOC 2242Z 244DEG 48KT 2997 8217 

$$

SHASHY

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 6, 10:45 AM EST	Small Craft Advisory	JAX		23 hr
Feb 6, 3:59 PM EST	Special Weather Statement	JAX	Gilchrist	46 min
Feb 6, 4:14 PM EST	Special Weather Statement	JAX	Marion	46 min
Feb 6, 4:42 PM EST	Special Weather Statement	JAX	Alachua, Gilchrist	48 min
Feb 6, 5:02 PM EST	Special Weather Statement	JAX	Clay, Putnam	43 min
Feb 6, 5:06 PM EST	Special Weather Statement	JAX	Marion	39 min
Feb 6, 5:37 PM EST	Special Weather Statement	JAX	Marion, Putnam	38 min
Feb 6, 5:39 PM EST	Special Weather Statement	JAX	Clay, Duval	51 min
Feb 6, 5:41 PM EST	Tornado Warning	JAX	Flagler, Putnam	34 min
Feb 6, 5:46 PM EST	Special Weather Statement	JAX	Alachua, Bradford, Gilchrist, Union	44 min
Feb 6, 6:03 PM EST	Special Marine Warning	JAX		57 min
Feb 6, 6:07 PM EST	Severe Thunderstorm Warning	JAX	Flagler, Saint Johns	23 min
Feb 6, 6:30 PM EST	Special Weather Statement	JAX	Flagler	45 min
Feb 6, 6:32 PM EST	Special Weather Statement	JAX	Alachua, Bradford, Clay	43 min
Feb 6, 6:51 PM EST	Special Weather Statement	JAX	Flagler	24 min
Feb 6, 6:53 PM EST	Severe Thunderstorm Warning	JAX	Marion	35 min
Feb 6, 6:55 PM EST	Special Marine Warning	JAX		65 min
Feb 6, 6:56 PM EST	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.