Alert archive / Oklahoma / Flash Flood Warnings in 1987

Flash Flood Warning 6, NWS Norman, OK

May 27, 1987Garfield County, Kingfisher County, Oklahoma

NWS Norman, OK issued this flash flood warning at May 27, 1987, 10:45 AM CDT for Garfield County, Kingfisher County, Oklahoma. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued: May 27, 1987, 10:45 AM CDT (15:45 UTC)
Expired: May 27, 1987, 1:45 PM CDT
In force: 3 hr
Issued by: NWS Norman, OK
Area: Whole counties

Counties Garfield County, OK, Kingfisher County, OK

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Ok Cty/Will Rgrs, OK (KOKC), launched 12:00Z, 3.8 hours before the alert went out and 88 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: 388 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 599 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 159 m²/s²
0-3 km storm-relative helicity: 115 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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.

In the hours before

Special weather statement, May 27, 5:23 AM CDT, 5 hours 22 minutes before

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Special weather statement, May 27, 6:09 AM CDT, 4 hours 36 minutes before

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Special weather statement, May 27, 8:57 AM CDT, 1 hour 48 minutes before

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Special weather statement, May 27, 9:59 AM CDT, 46 minutes before

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Special weather statement, May 27, 10:41 AM CDT, 4 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 26, 8:25 PM CDT	Severe Thunderstorm Warning	OUN	Garfield	65 min
May 26, 9:34 PM CDT	Flash Flood Warning	OUN	Alfalfa, Blaine, Dewey, Garfield, Major	3 hr
May 26, 9:34 PM CDT	Flash Flood Warning	OUN	Custer	3 hr
May 26, 9:34 PM CDT	Flash Flood Warning	OUN	Grant	3 hr
May 26, 9:37 PM CDT	Severe Thunderstorm Warning	OUN	Kay	43 min
May 26, 9:44 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Major	46 min
May 26, 10:43 PM CDT	Severe Thunderstorm Warning	OUN	Caddo	47 min
May 27, 12:28 AM CDT	Flash Flood Warning	OUN	Blaine, Custer, Dewey	2 hr
May 27, 3:00 PM CDT	Flash Flood Warning	OUN	Canadian, Logan, Oklahoma	3 hr
May 27, 5:33 PM CDT	Flash Flood Warning	OUN	Caddo	4 hr
May 27, 5:33 PM CDT	Flash Flood Warning	OUN	Canadian, Cleveland, Logan, Oklahoma	4 hr
May 27, 5:33 PM CDT	Flash Flood Warning	OUN	Grady, McClain	4 hr
May 27, 6:08 PM CDT	Flash Flood Warning	OUN	Comanche, Kiowa	3 hr
May 27, 6:08 PM CDT	Flash Flood Warning	OUN	Stephens	3 hr
May 27, 6:56 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Oklahoma	34 min

Nearby

Flash Flood Warnings in Oklahoma, 1987 Every flash flood warning in 1987

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.