Alert archive / Florida / Special Weather Statements in 2012

Special Weather Statement, NWS Jacksonville, FL

October 5, 2012Gilchrist County, Florida

NWS Jacksonville, FL issued this special weather statement at Oct 5, 2012, 4:41 PM EDT for Gilchrist County, Florida. It was in force for 49 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: Oct 5, 2012, 4:41 PM EDT (20:41 UTC)
Expired: Oct 5, 2012, 5:30 PM EDT
In force: 49 min
Issued by: NWS Jacksonville, FL

County Gilchrist County, FL

The radar

The Jacksonville radar (KJAX), 134 km from the middle of the area, began a volume at 20:40 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

Tampa Bay, FL (KTBW), launched 12:00Z, 8.7 hours before the alert went out and 214 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: 1936 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 606 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: 32 m²/s²
0-3 km storm-relative helicity: 58 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 5, 12:26 PM EDT	Special Weather Statement	JAX	Saint Johns	34 min
Oct 5, 1:05 PM EDT	Areal Flood Advisory	JAX	Clay, Saint Johns	115 min
Oct 5, 2:30 PM EDT	Areal Flood Advisory	JAX	Clay, Putnam, Saint Johns	60 min
Oct 5, 3:20 PM EDT	Special Weather Statement	JAX	Flagler	40 min
Oct 5, 3:55 PM EDT	Areal Flood Advisory	JAX	Baker, Duval, Nassau	65 min
Oct 5, 4:14 PM EDT	Areal Flood Advisory	JAX	Marion	91 min
Oct 5, 4:19 PM EDT	Special Weather Statement	JAX	Marion	41 min
Oct 5, 4:42 PM EDT	Special Weather Statement	JAX	Marion	48 min
Oct 5, 5:11 PM EDT	Areal Flood Advisory	JAX	Alachua, Gilchrist	64 min
Oct 5, 5:15 PM EDT	Special Weather Statement	JAX	Alachua	30 min
Oct 5, 5:19 PM EDT	Special Weather Statement	JAX	Marion	41 min
Oct 5, 5:44 PM EDT	Special Weather Statement	JAX	Union	46 min
Oct 5, 5:53 PM EDT	Special Weather Statement	JAX	Alachua	52 min
Oct 5, 6:00 PM EDT	Areal Flood Advisory	JAX	Alachua, Columbia, Union	60 min
Oct 5, 6:03 PM EDT	Special Weather Statement	JAX	Gilchrist	42 min
Oct 5, 6:08 PM EDT	Special Weather Statement	JAX	Union	52 min
Oct 5, 6:37 PM EDT	Areal Flood Advisory	JAX	Gilchrist	83 min
Oct 5, 7:07 PM EDT	Areal Flood Advisory	JAX	Columbia	83 min
Oct 5, 6:53 PM EDT	Special Weather Statement	JAX	Pierce	52 min

Nearby

Special Weather Statements in Florida, 2012 Every special weather statement in 2012

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.