Alert archive / Texas / Red Flag Warnings in 2008

Red Flag Warning 31, NWS Norman, OK

May 10, 20085 counties in Texas

NWS Norman, OK issued this red flag warning at May 10, 2008, 3:21 AM CDT for 5 counties in Texas. It took effect at May 10, 2008, 1:00 PM CDT. 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: May 10, 2008, 3:21 AM CDT (08:21 UTC)
In effect from: May 10, 2008, 1:00 PM CDT
Expired: May 10, 2008, 7:00 PM CDT
In force: 6 hr
Issued by: NWS Norman, OK

Counties Baylor County, TX, Foard County, TX, Hardeman County, TX, Knox County, TX, Wilbarger County, TX

The radar

The Altus AFB radar (KFDR), 72 km from the middle of the area, began a volume at 08:26 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

Fort Worth, TX (KFWD), launched 00:00Z, 8.4 hours before the alert went out and 241 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: 7 J/kg
Mixed-layer CIN: -351 J/kg
Mixed-layer LCL: 1895 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: -21 m²/s²
0-3 km storm-relative helicity: 104 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 Norman, OK wrote its last area forecast discussion before this red flag warning went out at May 9, 6:16 PM CDT, 9 hours 5 minutes earlier.

Area forecast discussion, May 9, 6:16 PM CDT, 9 hours 5 minutes before

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Hazardous weather outlook, May 9, 7:45 PM CDT, 7 hours 36 minutes before

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The office that day

Everything else NWS Norman, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 10, 12:58 PM CDT	Severe Thunderstorm Warning	OUN	Hughes	21 min
May 10, 3:44 PM CDT	Wind Advisory	OUN	Alfalfa, Beckham, Blaine, Caddo, Canadian, Cleveland and 35 more	12 hr
May 10, 5:52 PM CDT	Tornado Warning	OUN	Atoka	23 min

Nearby

Red Flag Warnings in Texas, 2008 Every red flag warning in 2008

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.