Alert archive / Florida / Red Flag Warnings in 2011

Red Flag Warning 2, NWS Miami, FL

January 23, 2011Collier County, Florida

NWS Miami, FL issued this red flag warning at Jan 23, 2011, 3:59 AM EST for Collier County, Florida. It took effect at Jan 23, 2011, 11:00 AM EST. It was in force for 7 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
Jan 23, 2011, 3:59 AM EST (08:59 UTC)
In effect from
Jan 23, 2011, 11:00 AM EST
Expired
Jan 23, 2011, 6:00 PM EST
In force
7 hr
Issued by
NWS Miami, FL

County Collier County, FL

The radar

The Miami radar (KAMX), 111 km from the middle of the area, began a volume at 08:57 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

Miami, FL (KMFL), launched 00:00Z, 9.0 hours before the alert went out and 113 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, Miami, FL at 00:00Z on 2011-01-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Miami, FL at 00:00Z on 2011-01-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -81 square meters per square second.1939587897117136Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1251 m above ground
0-6 km bulk shear
74 kt
0-1 km storm-relative helicity
-81 m²/s²
0-3 km storm-relative helicity
196 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.

321 
WWUS82 KMFL 230859
RFWMFL

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE MIAMI FL
359 AM EST SUN JAN 23 2011

FLZ063-066-069-070-232300-
/O.UPG.KMFL.FW.A.0003.110123T1700Z-110123T2300Z/
/O.NEW.KMFL.FW.W.0002.110123T1600Z-110123T2300Z/
GLADES-HENDRY-COASTAL COLLIER-INLAND COLLIER-
359 AM EST SUN JAN 23 2011

...RED FLAG WARNING IN EFFECT FROM 11 AM THIS MORNING TO 6 PM EST
THIS EVENING FOR MULTIPLE HOURS OF SUB 35 PERCENT RELATIVE
HUMIDITY IN GLADES, HENDRY, AND COLLIER COUNTIES...

A DRY AIRMASS HAS SETTLED ACROSS SOUTH FLORIDA AND MINIMUM
AFTERNOON RELATIVE HUMIDITY VALUES OF AROUND 25 TO 35 PERCENT FOR
MULTIPLE HOURS CAN BE EXPECTED THIS AFTERNOON. THEREFORE... A
RED FLAG WARNING HAS BEING ISSUED AT THIS TIME FROM 11 AM THIS
MORNING TO 6 PM EST THIS EVENING

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE POSSIBLE. LISTEN FOR LATER FORECASTS AND POSSIBLE RED FLAG
WARNINGS.

&&

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 23, 2:34 PM ESTSmall Craft Advisory for Hazardous SeasMFL19 hr

Nearby

Red Flag Warnings in Florida, 2011Every red flag warning in 2011

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.