Alert archive / Florida / Special Weather Statements in 2021

Special Weather Statement, NWS Jacksonville, FL

June 20, 2021Putnam County, Florida

NWS Jacksonville, FL issued this special weather statement at Jun 20, 2021, 1:19 PM EDT for Putnam County, Florida. 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: Jun 20, 2021, 1:19 PM EDT (17:19 UTC)
Expired: Jun 20, 2021, 2:00 PM EDT
In force: 41 min
Issued by: NWS Jacksonville, FL

County Putnam County, FL

The radar

The Jacksonville radar (KJAX), 92 km from the middle of the area, began a volume at 17:19 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, 5.3 hours before the alert went out and 93 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: 1078 J/kg
Mixed-layer CIN: -61 J/kg
Mixed-layer LCL: 938 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 170 m²/s²
0-3 km storm-relative helicity: 197 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 9.6

Open this sounding in Storm Lab

The text

As transmitted.

073 
WWUS82 KJAX 201719
SPSJAX

Special Weather Statement
National Weather Service Jacksonville FL
119 PM EDT Sun Jun 20 2021
 
FLZ033-137-237-201800-
Eastern Putnam FL-Western Putnam FL-Inland St. Johns FL-
119 PM EDT Sun Jun 20 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTH CENTRAL ST. JOHNS AND
NORTHEASTERN PUTNAM COUNTIES UNTIL 200 PM EDT...

* At 118 PM EDT, National Weather Service meteorologists were 
  tracking a strong thunderstorm with weak rotation aloft near 
  Palatka, moving northeast at 35 mph.

* Wind gusts up to 45 mph and funnel clouds possible with this storm.

* Locations impacted include...
  Palatka, Hastings, East Palatka, Federal Point, Orange Mills, Spuds
  and Elkton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To report severe weather, contact your nearest law enforcement
agency. You can also share your report with NWS Jacksonville on
Facebook and Twitter.

&&

LAT...LON 2958 8174 2964 8178 2987 8144 2966 8132
TIME...MOT...LOC 1718Z 244DEG 29KT 2963 8171 

$$

WOLF

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 19, 8:55 PM EDT	Special Weather Statement	JAX	Duval	35 min
Jun 19, 9:26 PM EDT	Special Weather Statement	JAX	Saint Johns	49 min
Jun 19, 10:09 PM EDT	Special Marine Warning	JAX		51 min
Jun 19, 10:37 PM EDT	Special Marine Warning	JAX		53 min
Jun 20, 2:11 AM EDT	Small Craft Advisory	JAX		25 hr
Jun 20, 5:08 AM EDT	Special Weather Statement	JAX	Hamilton	37 min
Jun 20, 6:15 AM EDT	Special Weather Statement	JAX	Columbia, Hamilton, Suwannee	45 min
Jun 20, 7:30 AM EDT	Special Weather Statement	JAX	Baker	45 min
Jun 20, 9:21 AM EDT	Special Weather Statement	JAX	Bradford	39 min
Jun 20, 9:34 AM EDT	Special Weather Statement	JAX	Gilchrist	41 min
Jun 20, 10:04 AM EDT	Special Weather Statement	JAX	Duval	41 min
Jun 20, 10:14 AM EDT	Special Weather Statement	JAX	Alachua	46 min
Jun 20, 10:36 AM EDT	Severe Thunderstorm Warning	JAX	Alachua, Marion	39 min
Jun 20, 11:05 AM EDT	Areal Flood Warning	JAX	Alachua, Marion	85 min
Jun 20, 11:15 AM EDT	Special Weather Statement	JAX	Alachua, Bradford	45 min
Jun 20, 11:45 AM EDT	Special Weather Statement	JAX	Putnam	45 min
Jun 20, 11:57 AM EDT	Special Weather Statement	JAX	Bradford, Clay	48 min
Jun 20, 12:02 PM EDT	Special Weather Statement	JAX	Putnam	43 min
Jun 20, 12:21 PM EDT	Special Weather Statement	JAX	Gilchrist	39 min
Jun 20, 1:38 PM EDT	Tornado Warning	JAX	Putnam, Saint Johns	37 min

Nearby

Special Weather Statements in Florida, 2021 Every special weather statement 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.