Alert archive / Oklahoma / Flash Flood Warnings in 1986

Flash Flood Warning 39, NWS Norman, OK

October 2, 1986Caddo County, Grady County, McClain County, Oklahoma

NWS Norman, OK issued this flash flood warning at Oct 2, 1986, 8:50 PM CDT for Caddo County, Grady County, McClain County, Oklahoma. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued
Oct 2, 1986, 8:50 PM CDT (01:50 UTC)
Expired
Oct 3, 1986, 2:00 AM CDT
In force
5 hr
Issued by
NWS Norman, OK
Area
Whole counties

Counties Caddo County, OK, Grady County, OK, McClain 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 00:00Z, 1.8 hours before the alert went out and 46 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-pSkew-T log-p diagram, Ok Cty/Will Rgrs, OK at 00:00Z on 1986-10-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 582 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Ok Cty/Will Rgrs, OK at 00:00Z on 1986-10-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 73 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
582 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
543 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
73 m²/s²
0-3 km storm-relative helicity
45 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.9

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, Oct 2, 4:53 PM CDT, 3 hours 57 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WICHITA FALLS TX
450 PM CDT THU OCT 2 1986

...A TORNADO WATCH IS IN EFFECT FOR THE FOLLOWING COUNTIES OF
NORTH CENTRAL TEXAS UNTIL 11 PM CDT...BAYLOR...FOARD...HARDEMAN...
KNOX...WICHITA...AND WILBARGER...

...A FLASH FLOOD WATCH IS ALSO IN EFFECT FOR THAT PORTION OF NORTH TEXAS
ALONG AND NORTHWEST OF A LINE FROM MONTAGUE TO ABILENE.

AT 445 PM CDT THE WICHITA FALLS RADAR SHOWED NUMEROUS SHOWERS AND
VERY STRONG THUNDERSTORMS OCCURRING 40 MILES EITHER SIDE OF A LINE
FROM LUBBOCK TEXAS TO TULSA OKLAHOMA.

NO PRECIPTITATION WAS OCCURRING IN THIS PORTION OF NORTH TEXAS...HOWEVER
VERY STRONG THUNDERSTORMS WERE OCCURRING TO THE SOUTHWEST OF CHrILDRESS.
THIS ACTIVITY COULD POSSIBLY MOVE INTO WESTERN AND NORTHWESTERN PORTIONS
OF HARDEMAN COUNTY DURING THE NEXT HOUR.

MOVEMENT OF ALL PRECIPITATION TO THE NORTHEAST AT 30 MPH.

ADDITIONAL STATEMENTS WILL BE ISSUED THROUGHOUT THE EVENING.
Special weather statement, Oct 2, 5:52 PM CDT, 2 hours 58 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
545 PM CDT THU OCT 2 1986

...HOW MUCH HAS IT RAINED THIS WEEK IN OKLAHOMA...
             WOULD YOU BELIEVE NEARLY 25 INCHES SINCE SUNDAY MORNING...

BASED UPON DAILY RAINFALL REPORTS FROM AN EXTENSIVE NETWORK OF
COOPERATIVE WEATHER OBSERVERS...THE NATIONAL WEATHER SERVICE HAS
RECORDED TWO BANDS OF EXCESSIVE RAINFALL ACROSS OKLAHOMA THIS WEEK.
THESE REPORTS COVER A PERIOD FROM SUNRISE SUNDAY MORNING THROUGH SUNRISE
THIS THURSDAY MORNING.

THE FIRST BAND OF RAINS IN EXCESS OF 12 INCHES WAS ABOUT 15 MILES WIDE
AND EXTENDED FROM NORTHERN CANADIAN COUNTY SOUTH OF OKARCHE NORTHEAST
ACROSS GUTHRIE TO THE WEST SIDE OF THE KEYSTONE RESERVOIR.

A SECOND BAND OF RAINS IN EXCESS OF ONE FOOT WAS ABOUT 20 MILES WIDE
AND EXTENDED FROM NORTHWESTERN NOBLE COUNTY INTO CENTRAL KAY COUNTY.
THE CITIES OF TONKAWA..BLACKWELL AND NEWKIRK LAY IN THE MIDST OF THIS
SECOND BAND.

AS IF THIS RAIN WERE NOT ENOUGH TO SET RECORDS AND CAUSE WIDESPREAD
FLOODS...TODAY BROUGHT ADDITIONAL RAINS IN EXCESS OF 5 INCHES ACROSS THE
SAME TWO AREAS.  BASED UPON RADAR ESTIMATES FROM OKLAHOMA CITY...RAINS OF
5 TO 8 INCHES FELL IN AN AREA 15 MILES WIDE FROM NEAR EL RENO TO BETWEEN
CRESENT AND GUTHRIE TO JUST WEST OF LAKE CARL BLACKWELL. A SECOND AREA
OF 5 INCH RAINS IS NOW ON THE GROUND IN A BAND ACROSS CENTRAL KAY COUNTY
FROM BLACKWELL NORTHEAST TO THE KANSAS BORDER.

THUS..UP TO 5PM THIS AFTERNOON..THE WEST CENTRAL PORTION OF LOGAN COUNTY
BETWEEN CASHION..GUTHRIE..AND CRESENT AND THE NORTH CENTRAL PORTION OF
KAY COUNTY FROM BLACKWELL TO NEWKIRK...HAVE BOTH RECORDED RAINFALLS THAT
APPROACH 25 INCHES IN TOTAL ACCUMULATIONS.

WITH NEARLY A YEARS WORTH OF RAIN ON THE GROUND THIS WEEK AND MORE TO
COME TONIGHT...RESIDENTS OF NORTH CENTRAL OKLAHOMA SHOULD PREPARE FOR
HISTORIC FLOODS TONIGHT.
Special weather statement, Oct 2, 5:57 PM CDT, 2 hours 53 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WICHITA FALLS TX
550 PM CDT THU OCT 2 1986

...A TORNADO WATCH IS IN EFFECT FOR WICHITA AND THE COUNTIES TO THE
SOUTHWEST AND WEST UNTIL 11 PM...

...A FLASH FLOOD WATCH IS ALSO IN EFFECT FOR MUCH OF THE AREA TONIGHT...

AT 545 PM CDT THE WICHITA FALLS RADAR SHOWED NUMEROUS SHOWERS AND VERY
STRONG THUNDERSTORMS CONTINUING 40 MILES EITHER SIDE OF A LINE FROM
TULSA TO SOUTH OF LUBBOCK.

IN THIS PORTION OF NORTH TEXAS...ONLY LIGHT RAIN WAS INDICATED OVER
PORTIONS OF EXTREME NORTHWESTERN HARDEMAN COUNTY. HOWEVER A VERY
STRONG THUNDERSTORM WAS LOCATED JUST EAST OF CHILDRESS. THIS STORM
COULD POSSIBLY MOVE ACROSS EXTREME NORTHWESTERN HARDEMAN C8OUNTY DURING
THE NEXT HALF HOUR.

MOVMENT OF ALL PRECIPITATION CONTINUED TO THE NORTHEAST AT 30 MPH.
Special weather statement, Oct 2, 6:49 PM CDT, 2 hours 1 minute before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WICHITA FALLS TX
650 PM CDT THU OCT 2 1986

...A TORNADO WATCH IS IN EFFECT FOR WICHITA AND THE COUNTIES TO THE
SOUTHWEST AND WEST UNTIL 11 PM...

...A FLASH FLOOD WATCH IS ALSO IN EFFECT FOR MUCH OF THE AREA TONIGHT...

AT 645 PM CDT THE WICHITA FALLS RADAR SHOWED NUMEROUS SHOWERS AND VERY
STRONG THUNDERSTORMS BLANKETING MUCH OF WESTERN OKLAHOMA...THE SOUTH
EASTERN AND EASTERN TEXAS PANHANDLE ASa WELL AS MUCH OF TEXAS SOUTH PLAINS.
MOVEMENT...NORTHEAST AT 30 MPH.
Local storm report, Oct 2, 7:51 PM CDT, 59 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
750 PM CDT THU OCT 2 1986

TIME(CDT)  COUNTY       REPORT

1010-1020  OKLAHOMA     TORNADO OCCURRED IN THE VILLAGE AND NORTHERN
                        OKLAHOMA CITY
1020       OKLAHOMA     60 TO 65 MPH WINDS IN EDMOND
1114       LOGAN        TORNADO TOUCHED DOWN 9 MILES WEST OF GUTHRIE
1629       LOGAN        TORNADO 6 MILES WEST OF GUTHRIE
1800       CLEVELAND    NICKEL-SIZED HAIL AN:D FUNNEL CLOUD OVER
                        SOUTHEAST NORMAN
1828       POTTAWATOMIE FUNNEL CLOUD NEAR MCLOUD
1846       LINCOLN      FUNNEL 2 MILES WEST OF MEEKER
Special weather statement, Oct 2, 8:01 PM CDT, 49 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WICHITA FALLS TX
800 PM CDT THU OCT 2 1986

...A TORNADO WATCH IS IN EFFECT FOR WICHITA AND THE COUNTIES TO THE
SOUTHWEST AND WEST UNTIL 11 PM...

...A FLASH FLOOD WATCH IS ALSO IN EFFECT FOR MUCH OF THE AREA TONIGHT...

AT 755 NO PRECIPTATION WAS OCCURRING IN THIS PORTION OF NORTH TEXAS.
HOWEVER...THE WICHITA FALLS RADAR WAS SHOWING NUMEROUS SHOWERS AND
SCATTERED STRONG THUNDERSTORMS OCCURRING IN A 50 MILE WIDE AREA
FROM TULSA OKLAHOMA TO WELLINGTON IN THE SOUTHEASTERN TEXAS PANHANDLE
AND ON SOUTHWEST TO MIDLAND. MOVEMENT TO THE NORTHEAST AT 30 MPH.

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 2, 7:03 PM CDTFlash Flood WarningOUNLogan, Oklahoma2 hr
Oct 2, 8:09 PM CDTFlash Flood WarningOUNPayne81 min
Oct 2, 8:50 PM CDTFlash Flood WarningOUNLogan, Noble, Payne5 hr
Oct 2, 8:50 PM CDTFlash Flood WarningOUNCanadian, Cleveland, Kingfisher, Oklahoma5 hr
Oct 2, 8:50 PM CDTFlash Flood WarningOUNGreer, Harmon, Jackson, Kiowa5 hr
Oct 2, 8:50 PM CDTFlash Flood WarningOUNBeckham, Custer, Washita5 hr
Oct 2, 8:50 PM CDTFlash Flood WarningOUNBlaine, Dewey, Garfield, Major5 hr
Oct 2, 8:50 PM CDTFlash Flood WarningOUNKay5 hr
Oct 3, 2:15 AM CDTFlash Flood WarningOUNBlaine, Garfield, Kingfisher, Major4 hr
Oct 3, 2:15 AM CDTFlash Flood WarningOUNCaddo, Canadian, Comanche, Grady, Kiowa4 hr
Oct 3, 2:15 AM CDTFlash Flood WarningOUNGrant, Kay, Noble4 hr
Oct 3, 2:15 AM CDTFlash Flood WarningOUNCotton, Tillman4 hr
Oct 3, 2:15 AM CDTFlash Flood WarningOUNLogan4 hr

Nearby

Flash Flood Warnings in Oklahoma, 1986Every flash flood warning in 1986

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.