Alert archive / Florida / Special Weather Statements in 2019

Special Weather Statement, NWS Jacksonville, FL

January 20, 20194 counties in Florida

NWS Jacksonville, FL issued this special weather statement at Jan 20, 2019, 2:08 AM EST for 4 counties in Florida. It was in force for 37 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: Jan 20, 2019, 2:08 AM EST (07:08 UTC)
Expired: Jan 20, 2019, 2:45 AM EST
In force: 37 min
Issued by: NWS Jacksonville, FL

Counties Clay County, FL, Duval County, FL, Nassau County, FL, Putnam County, FL

The radar

The Jacksonville radar (KJAX), 20 km from the middle of the area, began a volume at 07:11 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 00:00Z, 7.1 hours before the alert went out and 22 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: 1672 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 216 m²/s²
0-3 km storm-relative helicity: 374 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

001 
WWUS82 KJAX 200708
SPSJAX

Special Weather Statement
National Weather Service Jacksonville FL
208 AM EST SUN JAN 20 2019
 
FLZ024-025-031>033-036-037-040-124-125-133-GAZ166-200745-
Coastal St. Johns FL-Inland Duval FL-Putnam FL-Inland Nassau FL-
Alachua FL-Bradford FL-Marion FL-Coastal Nassau FL-Coastal Duval FL-
Clay FL-Inland St. Johns FL-Coastal Camden GA-
208 AM EST SUN JAN 20 2019

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN ALACHUA...
SOUTHEASTERN BRADFORD...NORTHEASTERN NASSAU...NORTHWESTERN ST.
JOHNS...NORTH CENTRAL MARION...NORTHWESTERN PUTNAM...CLAY...DUVAL AND
SOUTHEASTERN CAMDEN COUNTIES UNTIL 245 AM EST...

* At 207 AM EST, National Weather Service meteorologists were 
  tracking showers with embedded storms along a line extending from 
  St. Marys to near Camp Blanding to near Cross Creek. Movement was 
  northeast at 40 mph.

* Winds in excess of 40 mph possible with these storms.

* Locations impacted include...
  Jacksonville, St. Marys, Kingsland, Fernandina Beach, Orange Park,
  Green Cove Springs, Interlachen, Keystone Heights, Jacksonville
  International Arpt and Kings Bay Base.

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 3008 8149 2945 8180 2951 8236 3000 8205
      3075 8170 3075 8169 3081 8167 3085 8141
      3077 8142 3031 8135
TIME...MOT...LOC 0707Z 260DEG 23KT 3071 8157 3002 8197 2952 8222 

$$

PETERSON

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 19, 8:56 PM EST	Special Weather Statement	JAX	Marion	49 min
Jan 19, 9:51 PM EST	Special Weather Statement	JAX	Marion	39 min
Jan 19, 10:32 PM EST	Special Weather Statement	JAX	Hamilton	58 min
Jan 19, 11:35 PM EST	Special Weather Statement	JAX	Hamilton	25 min
Jan 19, 11:51 PM EST	Special Weather Statement	JAX	Suwannee	24 min
Jan 20, 12:18 AM EST	Special Weather Statement	JAX	Columbia, Gilchrist	27 min
Jan 20, 1:03 AM EST	Special Weather Statement	JAX	Bradford, Union	27 min
Jan 20, 1:06 AM EST	Special Weather Statement	JAX	Alachua	24 min
Jan 20, 1:38 AM EST	Special Weather Statement	JAX	Alachua, Bradford, Clay, Duval, Putnam	37 min
Jan 20, 2:21 AM EST	Special Weather Statement	JAX	Clay	24 min
Jan 20, 2:44 AM EST	Wind Advisory	JAX	Baker, Bradford, Duval, Flagler, Gilchrist, Nassau and 2 more	14 hr
Jan 20, 2:54 AM EST	Special Weather Statement	JAX	Saint Johns	51 min
Jan 20, 2:17 PM EST	Freeze Warning	JAX	Baker, Bradford, Gilchrist, Nassau, Suwannee, Union	19 hr
Jan 20, 5:17 PM EST	Small Craft Advisory	JAX		4 hr
Jan 19, 11:22 PM EST	Special Weather Statement	JAX	Bacon	23 min

Nearby

Special Weather Statements in Florida, 2019 Every special weather statement in 2019

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.