Alert archive / Florida / Red Flag Warnings in 2013

Red Flag Warning 17, NWS Jacksonville, FL

November 12, 2013Suwannee County, Florida

NWS Jacksonville, FL issued this red flag warning at Nov 12, 2013, 2:01 PM EST for Suwannee County, Florida. It took effect at Nov 13, 2013, 12:00 PM EST. It was in force for 5 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Nov 12, 2013, 2:01 PM EST (19:01 UTC)
In effect from: Nov 13, 2013, 12:00 PM EST
Expired: Nov 13, 2013, 5:00 PM EST
In force: 5 hr
Issued by: NWS Jacksonville, FL

County Suwannee County, FL

The radar

The Moody AFB radar (KVAX), 77 km from the middle of the area, began a volume at 18:57 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

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 7.0 hours before the alert went out and 128 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: 1447 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: -38 m²/s²
0-3 km storm-relative helicity: 44 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this red flag warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Jacksonville, FL wrote its last area forecast discussion before this red flag warning went out at Nov 12, 9:34 AM EST, 4 hours 27 minutes earlier.

Area forecast discussion, Nov 12, 9:34 AM EST, 4 hours 27 minutes before

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Hazardous weather outlook, Nov 12, 9:07 AM EST, 4 hours 54 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 12, 1:22 AM EST	Dense Fog Advisory	JAX	Baker, Bradford, Gilchrist, Nassau, Suwannee, Union	8 hr
Nov 12, 2:05 AM EST	Lake Wind Advisory	JAX	Flagler, Nassau	41 hr
Nov 12, 2:22 AM EST	Fire Weather Watch	JAX	Suwannee	12 hr
Nov 12, 3:12 AM EST	Gale Warning	JAX		42 hr
Nov 12, 2:38 PM EST	Freeze Watch	JAX	Appling, Atkinson, Bacon, Coffee, Jeff Davis, Pierce and 1 more	12 hr

Nearby

Red Flag Warnings in Florida, 2013 Every red flag warning in 2013

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.