Alert archive / Oklahoma / Flash Flood Warnings in 1991

Flash Flood Warning 29, NWS Norman, OK

June 12, 1991Jackson County, Oklahoma

NWS Norman, OK issued this flash flood warning at Jun 12, 1991, 7:30 PM CDT for Jackson County, Oklahoma. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued: Jun 12, 1991, 7:30 PM CDT (00:30 UTC)
Expired: Jun 12, 1991, 10:30 PM CDT
In force: 3 hr
Issued by: NWS Norman, OK
Area: Whole counties

County Jackson County, OK

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 0.5 hours before the alert went out and 197 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: 1492 J/kg
Mixed-layer CIN: -26 J/kg
Mixed-layer LCL: 1756 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: -5 m²/s²
0-3 km storm-relative helicity: 40 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

Local storm report, Jun 12, 5:55 PM CDT, 1 hour 35 minutes before

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Local storm report, Jun 12, 6:02 PM CDT, 1 hour 28 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
602 PM CDT WED JUN 12 1991

TIME(CDT)   COUNTY         REPORT

539 PM      GREER          DIME SIZE HAIL AT GRANITE

Local storm report, Jun 12, 6:24 PM CDT, 1 hour 6 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
602 PM CDT WED JUN 12 1991

TIME(CDT)   COUNTY         REPORT

621 PM      JACKSON        1 1/4 INCH HAIL 4 MILES WEST OF WARREN

Local storm report, Jun 12, 7:16 PM CDT, 14 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
615 PM CDT WED JUN 12 1991

TIME(CDT)   COUNTY         REPORT

630 PM      WASHITA        NICKEL SIZE HAIL 1 MILE WEST OF ROCKY
655 PM      J@ACKSON        1 1/4 INCH HAIL 4 MILES WEST OF WARREN

Local storm report, Jun 12, 7:19 PM CDT, 11 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
619 PM CDT WED JUN 12 1991

TIME(CDT)   COUNTY         REPORT

710 PM      JACKSON        DIME SIZE HAIL 4 MILES WEST OF WARREN

Local storm report, Jun 12, 7:28 PM CDT, 2 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
728 PM CDT WED JUN 12 1991

TIME(CDT)   COUNTY         REPORT

712 PM      KIOWA          60 MPH WINDS AT ROOSEVELT

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 12, 7:08 PM CDT	Severe Thunderstorm Warning	OUN	Jackson, Kiowa	52 min
Jun 12, 8:02 PM CDT	Severe Thunderstorm Warning	OUN	Jackson	43 min
Jun 12, 8:24 PM CDT	Severe Thunderstorm Warning	OUN	Kiowa	66 min
Jun 12, 9:03 PM CDT	Severe Thunderstorm Warning	OUN	Caddo	42 min
Jun 12, 9:11 PM CDT	Severe Thunderstorm Warning	OUN	Tillman	49 min
Jun 12, 9:48 PM CDT	Severe Thunderstorm Warning	OUN	Comanche	57 min
Jun 12, 9:59 PM CDT	Severe Thunderstorm Warning	OUN	Tillman	46 min
Jun 13, 5:38 AM CDT	Severe Thunderstorm Warning	OUN	Canadian	52 min
Jun 13, 7:27 AM CDT	Severe Thunderstorm Warning	OUN	Oklahoma	48 min

Nearby

Flash Flood Warnings in Oklahoma, 1991 Every flash flood warning in 1991

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.