Alert archive / Florida / Red Flag Warnings in 2009

Red Flag Warning 62, NWS Tampa Bay, FL

May 8, 2009Highlands County, Polk County, Florida

NWS Tampa Bay, FL issued this red flag warning at May 8, 2009, 4:09 AM EDT for Highlands County, Polk County, Florida. It took effect at May 8, 2009, 1:00 PM EDT. 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: May 8, 2009, 4:09 AM EDT (08:09 UTC)
In effect from: May 8, 2009, 1:00 PM EDT
Expired: May 8, 2009, 8:00 PM EDT
In force: 7 hr
Issued by: NWS Tampa Bay, FL

Counties Highlands County, FL, Polk County, FL

The radar

The Tampa radar (KTBW), 87 km from the middle of the area, began a volume at 08:10 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

Cape Canaveral, FL (KXMR), launched 00:00Z, 8.2 hours before the alert went out and 136 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: 1476 J/kg
Mixed-layer CIN: -42 J/kg
Mixed-layer LCL: 967 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 126 m²/s²
0-3 km storm-relative helicity: 79 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 7.9

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 Tampa Bay, FL wrote its last area forecast discussion before this red flag warning went out at May 8, 1:49 AM EDT, 2 hours 20 minutes earlier.

Area forecast discussion, May 8, 1:49 AM EDT, 2 hours 20 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 7, 8:51 PM EDT	Fire Weather Watch	TBW	Highlands, Polk	7 hr

Nearby

Red Flag Warnings in Florida, 2009 Every red flag warning in 2009

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.