Alert archive / Oklahoma / Areal Flood Warnings in 2011

Areal Flood Warning 40, NWS Tulsa, OK

November 22, 2011LeFlore County, Pushmataha County, Oklahoma

NWS Tulsa, OK issued this areal flood warning at Nov 22, 2011, 4:26 AM CST for LeFlore County, Pushmataha County, Oklahoma. It was in force for 12 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 22, 2011, 4:26 AM CST (10:26 UTC)
Expired: Nov 22, 2011, 4:30 PM CST
In force: 12 hr
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Flood severity: None

Counties LeFlore County, OK, Pushmataha County, OK

The radar

The Western Arkansas radar (KSRX), 94 km from the middle of the area, began a volume at 10:26 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

Shreveport, LA (KSHV), launched 00:00Z, 10.4 hours before the alert went out and 270 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: 485 J/kg
Mixed-layer CIN: -43 J/kg
Mixed-layer LCL: 1180 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 131 m²/s²
0-3 km storm-relative helicity: 246 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 2.0

Open this sounding in Storm Lab

What forecasters said that day

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

NWS Tulsa, OK wrote its last area forecast discussion before this areal flood warning went out at Nov 22, 3:44 AM CST, 42 minutes earlier.

Area forecast discussion, Nov 22, 3:44 AM CST, 42 minutes before

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Hazardous weather outlook, Nov 22, 2:41 AM CST, 1 hour 45 minutes before

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In the hours before

Local storm report, Nov 21, 11:07 PM CST, 5 hours 19 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 21, 6:27 PM CST	Flash Flood Warning	TSA	LeFlore, Pushmataha	4 hr
Nov 21, 7:59 PM CST	Special Weather Statement	TSA	Choctaw	31 min
Nov 21, 10:09 PM CST	River Flood Warning	TSA	Pushmataha	57 hr
Nov 21, 10:21 PM CST	Flash Flood Warning	TSA	LeFlore, Pushmataha	6 hr
Nov 21, 10:30 PM CST	Areal Flood Advisory	TSA	LeFlore, Sequoyah	2 hr
Nov 22, 7:41 AM CST	River Flood Warning	TSA	LeFlore	19 hr
Nov 22, 5:54 PM CST	Areal Flood Warning	TSA	LeFlore, Pushmataha	9 hr
Nov 21, 10:13 PM CST	Areal Flood Advisory	TSA	Benton, Washington	4 hr

Nearby

Areal Flood Warnings in Oklahoma, 2011 Every areal flood 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.