Alert archive / Florida / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 79, NWS Jacksonville, FL

June 9, 2021Baker County, Columbia County, Florida

NWS Jacksonville, FL issued this severe thunderstorm warning at Jun 9, 2021, 5:07 PM EDT for Baker County, Columbia County, Florida. It was in force for 23 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: Jun 9, 2021, 5:07 PM EDT (21:07 UTC)
Expired: Jun 9, 2021, 5:30 PM EDT
In force: 23 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Baker County, FL, Columbia County, FL

The radar

The Jacksonville radar (KJAX), 78 km from the middle of the area, began a volume at 21:10 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
Jun 9, 5:19 PM EDT	HAIL 0.25	5 Ene Olustee, FL	RADAR ESTIMATED TIME.

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

The nearest sounding before it

Jacksonville, FL (KJAX), launched 12:00Z, 9.1 hours before the alert went out and 78 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: 942 J/kg
Mixed-layer CIN: -31 J/kg
Mixed-layer LCL: 725 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: 36 m²/s²
0-3 km storm-relative helicity: 23 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

284 
WUUS52 KJAX 092107
SVRJAX
FLC003-023-092130-
/O.NEW.KJAX.SV.W.0079.210609T2107Z-210609T2130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Jacksonville FL
507 PM EDT Wed Jun 9 2021

The National Weather Service in Jacksonville has issued a

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

* Until 530 PM EDT.

* At 507 PM EDT, a severe thunderstorm was located over Olustee, or
  11 miles east of Lake City, and is nearly stationary.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Olustee and Sanderson. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3016 8257 3032 8257 3032 8227 3015 8228
TIME...MOT...LOC 2107Z 311DEG 3KT 3022 8245 

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

ENYEDI

1 follow-up statement

895 
WWUS52 KJAX 092129
SVSJAX

Severe Weather Statement
National Weather Service Jacksonville FL
529 PM EDT Wed Jun 9 2021

FLC003-023-092139-
/O.EXP.KJAX.SV.W.0079.000000T0000Z-210609T2130Z/
Baker FL-Columbia FL-
529 PM EDT Wed Jun 9 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN BAKER AND EAST
CENTRAL COLUMBIA COUNTIES WILL EXPIRE AT 530 PM EDT...
                
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 gusty
winds and heavy rain are still possible with this thunderstorm.

LAT...LON 3016 8257 3032 8257 3032 8227 3015 8228
TIME...MOT...LOC 2129Z 270DEG 3KT 3021 8243 

$$

ENYEDI

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 8, 10:08 PM EDT	Special Weather Statement	JAX	Marion	52 min
Jun 8, 11:38 PM EDT	Special Weather Statement	JAX	Baker	37 min
Jun 9, 2:52 PM EDT	Special Weather Statement	JAX	Suwannee	23 min
Jun 9, 3:07 PM EDT	Special Weather Statement	JAX	Gilchrist	53 min
Jun 9, 3:18 PM EDT	Special Weather Statement	JAX	Suwannee	42 min
Jun 9, 3:46 PM EDT	Special Weather Statement	JAX	Hamilton	44 min
Jun 9, 4:22 PM EDT	Special Weather Statement	JAX	Union	23 min
Jun 9, 4:53 PM EDT	Special Weather Statement	JAX	Baker	52 min
Jun 9, 5:27 PM EDT	Special Weather Statement	JAX	Baker	48 min
Jun 9, 5:47 PM EDT	Special Weather Statement	JAX	Duval	28 min
Jun 9, 6:11 PM EDT	Special Weather Statement	JAX	Suwannee	34 min
Jun 9, 6:34 PM EDT	Special Weather Statement	JAX	Nassau	41 min
Jun 9, 6:42 PM EDT	Severe Thunderstorm Warning	JAX	Nassau	22 min
Jun 9, 7:01 PM EDT	Special Weather Statement	JAX	Suwannee	29 min
Jun 9, 7:20 PM EDT	Severe Thunderstorm Warning	JAX	Suwannee	25 min
Jun 9, 7:37 PM EDT	Special Weather Statement	JAX	Suwannee	38 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.