Alert archive / Oklahoma / Flash Flood Warnings in 1997

Flash Flood Warning 58, NWS Norman, OK

August 11, 1997Kiowa County, Oklahoma

NWS Norman, OK issued this flash flood warning at Aug 11, 1997, 1:50 AM CDT for Kiowa County, Oklahoma. It was in force for 3 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: Aug 11, 1997, 1:50 AM CDT (06:50 UTC)
Expired: Aug 11, 1997, 5:00 AM CDT
In force: 3 hr
Issued by: NWS Norman, OK
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Kiowa County, OK

The radar

The Altus AFB radar (KFDR), 62 km from the middle of the area, began a volume at 06:50 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

Norman, OK (KOUN), launched 00:00Z, 6.8 hours before the alert went out and 148 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: 2314 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 1225 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 46 m²/s²
0-3 km storm-relative helicity: 126 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 3.8

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

What forecasters said that day

The local office's own words before this flash flood 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 flash flood warning went out at Aug 10, 8:26 PM CDT, 5 hours 24 minutes earlier.

Area forecast discussion, Aug 10, 8:26 PM CDT, 5 hours 24 minutes before

FPUS3 KOKC 110126 COR
AFDOKC

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
826 PM CDT SUN AUG 10 1997

UPDATED ZONES AT 745 PM TO INCLUDE FLASH FLOOD WATCH TONIGHT FOR
WEST AND NORTH CENTRAL OKLAHOMA ZONES. BASIS WAS PREVIOUS HEAVY RAINFALL
IN DEFINED FFA...PRESENT RADAR SITUATION WITH SOME TRAINING ECHOES AND
CONTINUED OVERNIGHT CONVECTION.

ADJUSTED TERMINOLOGY TO ACCOUNT FOR PERIODS OF THUNDERSTORMS
OVERNIGHT IN FFA. INCREASED POPS IN SOUTHWEST SET OF ZONES. ADJUSTED
WINDS TO REFLECT CURRENT SYNOPTIC SITUATION AND MESONET DATA.

TEMPERATURES WERE UNCHANGED.

FCSTID = 85

.OKC...
OK...FFA TNGT ZNS 004>023..033>036.
TX...NONE.

In the hours before

Local storm report, Aug 10, 10:33 PM CDT, 3 hours 17 minutes before

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Local storm report, Aug 10, 11:00 PM CDT, 2 hours 50 minutes before

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Local storm report, Aug 10, 11:04 PM CDT, 2 hours 46 minutes before

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Local storm report, Aug 10, 11:15 PM CDT, 2 hours 35 minutes before

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Local storm report, Aug 11, 1:14 AM CDT, 36 minutes before

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Local storm report, Aug 11, 1:18 AM CDT, 32 minutes before

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        Please try again in a few minutes.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 10, 7:00 PM CDT	Flash Flood Warning	OUN	Beckham	3 hr
Aug 10, 8:10 PM CDT	Flash Flood Warning	OUN	Kiowa, Washita	3 hr
Aug 10, 10:00 PM CDT	Flash Flood Warning	OUN	Beckham, Custer, Greer, Kiowa, Washita	4 hr
Aug 10, 10:39 PM CDT	Severe Thunderstorm Warning	OUN	Jackson	36 min
Aug 10, 11:18 PM CDT	Severe Thunderstorm Warning	OUN	Kiowa, Tillman	42 min
Aug 10, 11:52 PM CDT	Severe Thunderstorm Warning	OUN	Comanche	53 min

Nearby

Flash Flood Warnings in Oklahoma, 1997 Every flash flood warning in 1997

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.