Alert archive / Florida / Special Weather Statements in 2021

Special Weather Statement, NWS Jacksonville, FL

August 1, 2021Duval County, Florida

NWS Jacksonville, FL issued this special weather statement at Aug 1, 2021, 8:03 PM EDT for Duval County, Florida. It was in force for 72 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: Aug 1, 2021, 8:03 PM EDT (00:03 UTC)
Expired: Aug 1, 2021, 9:15 PM EDT
In force: 72 min
Issued by: NWS Jacksonville, FL

County Duval County, FL

The radar

The Jacksonville radar (KJAX), 21 km from the middle of the area, began a volume at 00:03 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

Cape Canaveral, FL (KXMR), launched 00:00Z, 0.1 hours before the alert went out and 237 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: 1918 J/kg
Mixed-layer CIN: -24 J/kg
Mixed-layer LCL: 1016 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 53 m²/s²
0-3 km storm-relative helicity: 76 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.4

Open this sounding in Storm Lab

The text

As transmitted.

932 
WWUS82 KJAX 020003
SPSJAX

Special Weather Statement
National Weather Service Jacksonville FL
803 PM EDT Sun Aug 1 2021
 
FLZ125-225-325-425-020115-
Western Duval FL-South Central Duval FL-Trout River FL-
Coastal Duval FL-
803 PM EDT Sun Aug 1 2021

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL DUVAL COUNTY UNTIL 915 PM
EDT...

* At 802 PM EDT, National Weather Service meteorologists were 
  tracking showers and thunderstorm near Normandy, or 8 miles west 
  of Jacksonville, moving south at 10 mph.

* Minor flooding due to heavy rainfall is possible with this 
  activity. Rainfall amounts of around 1 to 2 inches has occurred.

* Locations impacted include...
  Jacksonville, Arlington, Nas Jax, Cisco Gardens, Ortega, Normandy,
  San Marco, Riverside, Baldwin and Tallyrand.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3021 8165 3022 8185 3030 8202 3043 8185
      3039 8166 3034 8159
TIME...MOT...LOC 0002Z 340DEG 8KT 3031 8182 

$$

SHASHY

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 1, 8:12 PM EDT	Special Weather Statement	JAX	Clay	48 min
Aug 1, 8:22 PM EDT	Areal Flood Warning	JAX	Duval	113 min
Aug 1, 9:00 PM EDT	Special Weather Statement	JAX	Clay	45 min
Aug 2, 12:11 PM EDT	Special Weather Statement	JAX	Marion	34 min
Aug 2, 12:40 PM EDT	Special Weather Statement	JAX	Marion	35 min
Aug 2, 12:57 PM EDT	Special Weather Statement	JAX	Alachua	33 min
Aug 2, 1:17 PM EDT	Special Weather Statement	JAX	Marion	28 min
Aug 2, 1:29 PM EDT	Special Weather Statement	JAX	Putnam	31 min
Aug 2, 1:50 PM EDT	Special Weather Statement	JAX	Flagler	40 min
Aug 2, 1:52 PM EDT	Special Weather Statement	JAX	Flagler	23 min
Aug 2, 1:54 PM EDT	Special Weather Statement	JAX	Putnam	36 min
Aug 2, 2:01 PM EDT	Special Marine Warning	JAX		59 min
Aug 2, 2:05 PM EDT	Special Weather Statement	JAX	Nassau	40 min
Aug 2, 2:12 PM EDT	Special Weather Statement	JAX	Marion	48 min
Aug 2, 2:32 PM EDT	Special Weather Statement	JAX	Clay, Saint Johns	43 min
Aug 2, 2:46 PM EDT	Special Weather Statement	JAX	Nassau	44 min
Aug 2, 2:48 PM EDT	Special Marine Warning	JAX		57 min
Aug 2, 2:53 PM EDT	Special Marine Warning	JAX		67 min
Aug 2, 3:17 PM EDT	Special Weather Statement	JAX	Baker, Union	43 min
Aug 2, 3:24 PM EDT	Special Weather Statement	JAX	Duval	51 min
Aug 2, 3:36 PM EDT	Special Weather Statement	JAX	Suwannee	39 min
Aug 2, 3:48 PM EDT	Special Weather Statement	JAX	Baker	42 min
Aug 2, 3:51 PM EDT	Special Marine Warning	JAX		54 min
Aug 2, 3:56 PM EDT	Severe Thunderstorm Warning	JAX	Baker, Nassau	13 min
Aug 2, 4:04 PM EDT	Special Marine Warning	JAX		56 min
Aug 2, 4:14 PM EDT	Special Weather Statement	JAX	Gilchrist	46 min
Aug 2, 4:22 PM EDT	Special Weather Statement	JAX	Marion	38 min
Aug 2, 4:32 PM EDT	Special Weather Statement	JAX	Duval	43 min
Aug 2, 4:47 PM EDT	Areal Flood Warning	JAX	Duval, Saint Johns	118 min
Aug 2, 5:15 PM EDT	Areal Flood Warning	JAX	Marion	2 hr
Aug 2, 5:18 PM EDT	Special Marine Warning	JAX		57 min
Aug 2, 3:16 PM EDT	Special Weather Statement	JAX	Appling, Jeff Davis	44 min
Aug 2, 3:44 PM EDT	Special Weather Statement	JAX	Camden, Glynn	46 min
Aug 2, 3:59 PM EDT	Special Weather Statement	JAX	Atkinson, Coffee	46 min
Aug 2, 4:07 PM EDT	Special Weather Statement	JAX	Charlton	53 min
Aug 2, 4:15 PM EDT	Special Weather Statement	JAX	Appling, Jeff Davis	45 min
Aug 2, 4:23 PM EDT	Special Weather Statement	JAX	Wayne	52 min
Aug 2, 4:37 PM EDT	Special Weather Statement	JAX	Brantley	38 min
Aug 2, 5:03 PM EDT	Special Weather Statement	JAX	Pierce	42 min
Aug 2, 5:22 PM EDT	Special Weather Statement	JAX	Charlton	53 min
Aug 2, 5:30 PM EDT	Special Weather Statement	JAX	Clinch	45 min
Aug 2, 6:16 PM EDT	Special Weather Statement	JAX	Clinch, Ware	44 min
Aug 2, 6:18 PM EDT	Areal Flood Warning	JAX	Clinch	117 min
Aug 2, 6:36 PM EDT	Special Weather Statement	JAX	Coffee	39 min
Aug 2, 7:54 PM EDT	Special Weather Statement	JAX	Clinch, Echols	51 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.