Alert archive / Florida / Red Flag Warnings in 2010

Red Flag Warning 38, NWS Jacksonville, FL

March 19, 20107 counties in Florida

NWS Jacksonville, FL issued this red flag warning at Mar 19, 2010, 4:11 AM EDT for 7 counties in Florida. It took effect at Mar 19, 2010, 1:00 PM EDT. It was in force for 6 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
Mar 19, 2010, 4:11 AM EDT (08:11 UTC)
In effect from
Mar 19, 2010, 1:00 PM EDT
Expired
Mar 19, 2010, 7:00 PM EDT
In force
6 hr
Issued by
NWS Jacksonville, FL

Counties Baker County, FL, Bradford County, FL, Flagler County, FL, Gilchrist County, FL, Nassau County, FL, Suwannee County, FL, Union County, FL

The radar

The Jacksonville radar (KJAX), 71 km from the middle of the area, began a volume at 08:11 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

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 8.2 hours before the alert went out and 202 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-pSkew-T log-p diagram, Tallahassee Rgnl, FL at 00:00Z on 2010-03-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tallahassee Rgnl, FL at 00:00Z on 2010-03-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 67 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
1 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1055 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
67 m²/s²
0-3 km storm-relative helicity
100 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 Mar 19, 3:09 AM EDT, 1 hour 2 minutes earlier.

Area forecast discussion, Mar 19, 3:09 AM EDT, 1 hour 2 minutes before
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Hazardous weather outlook, Mar 19, 4:06 AM EDT, 5 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE JACKSONVILLE FL
406 AM EDT FRI MAR 19 2010

FLZ020>025-030>033-035>038-040-GAZ132>136-149>154-162>166-201000-
HAMILTON-SUWANNEE-COLUMBIA-BAKER-NASSAU-DUVAL-UNION-BRADFORD-CLAY-
ST JOHNS-GILCHRIST-ALACHUA-PUTNAM-FLAGLER-MARION-COFFEE-
JEFF DAVIS-BACON-APPLING-WAYNE-ATKINSON-WARE-PIERCE-BRANTLEY-
INLAND GLYNN-COASTAL GLYNN-ECHOLS-CLINCH-CHARLTON-INLAND CAMDEN-
COASTAL CAMDEN-
406 AM EDT FRI MAR 19 2010

THIS OUTLOOK IS FOR NORTHEAST FLORIDA AND SOUTHEAST GEORGIA.

.DAY ONE...TODAY AND TONIGHT...

...MODERATE RIP CURRENT RISK AT AREA BEACHES...

LONG PERIOD SWELLS WILL BRING A MODERATE RIP CURRENT RISK AT
AREA BEACHES. REFER TO THE LATEST SURF ZONE FORECAST FOR DETAILS.

A FLOOD WARNING IS IN EFFECT FOR THE ALTAMAHA RIVER AT BAXLEY AND
THE SATILLA RIVER AT ATKINSON. REFER TO THE LATEST RIVER STATEMENTS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY...

LONG PERIOD SWELLS WILL CONTINUE AN ELEVATED RISK OF RIP CURRENTS ON
SATURDAY.

SUNDAY...A COLD FRONT WILL MOVE ACROSS THE AREA LATE IN THE
DAY PRECEDED BY NUMEROUS SHOWERS AND POSSIBLE THUNDERSTORMS. IN
ADDITION...BREEZY TO LOCALLY WINDY CONDITIONS WILL LIKELY ESTABLISH
BY LATE MORNING AND CONTINUING INTO THE AFTERNOON.

STRONG WESTERLY WINDS ARE EXPECTED MONDAY.

MINOR FLOODING WILL CONTINUE ON THE ALTAMAHA RIVER AT BAXLEY AND THE
SATILLA RIVER AT ATKINSON. REFER TO THE LATEST RIVER FLOOD PRODUCTS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT REQUESTED AT THIS TIME.

FOR ADDITIONAL INFORMATION...VISIT THE NATIONAL WEATHER SERVICE
IN JACKSONVILLE WEBSITE ON THE INTERNET AT WEATHER.GOV/JAX.

ECZ

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 19, 4:11 AM EDTFire Weather WatchJAXBaker, Bradford, Gilchrist, Nassau, Suwannee, Union24 hr
Mar 19, 2:28 PM EDTRed Flag WarningJAXBaker, Bradford, Gilchrist, Nassau, Suwannee, Union29 hr
Mar 18, 8:45 PM EDTRiver Flood WarningJAXJeff Davis, Montgomery, Toombs6 days

Nearby

Red Flag Warnings in Florida, 2010Every red flag warning in 2010

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.