Alert archive / Oklahoma / Flash Flood Warnings in 1986

Flash Flood Warning 19, NWS Tulsa, OK

October 1, 1986Cherokee County, Oklahoma

NWS Tulsa, OK issued this flash flood warning at Oct 1, 1986, 5:42 AM CDT for Cherokee County, Oklahoma. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Oct 1, 1986, 5:42 AM CDT (10:42 UTC)
Expired
Oct 1, 1986, 9:45 AM CDT
In force
4 hr
Issued by
NWS Tulsa, OK
Area
Whole counties

County Cherokee 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

Springfield, MO (KUMN), launched 00:00Z, 10.7 hours before the alert went out and 154 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, Springfield, MO at 00:00Z on 1986-10-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 572 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, Springfield, MO at 00:00Z on 1986-10-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 310 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
572 J/kg
Mixed-layer CIN
-98 J/kg
Mixed-layer LCL
675 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
310 m²/s²
0-3 km storm-relative helicity
314 m²/s²
Significant tornado parameter
0.8
Supercell composite
12.1

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 1, 1:44 AM CDT, 3 hours 58 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
142 AM CDT WED  OCT 1 1986

THE THUNDERSTORMS THAT ARE MOVING THROUGH THE TULSA ARE QUITE
STRONG WITH SOME VERY HEAVY RAIN AND CONSIDERABLE LIGHpTING.
BUT THEY DO NOT APPEAR TO HAVE THE LARGE HAIL AND DAMAGING WIND
THAT WERE OCCURING EARLIER.
THE STORMS ARE MOVING EAST NORTHEAST AT 45 MPH AND SHOULD
MOVE OUT OF THE TULSA AREA DURING NEXT 1 TO 2 HOURS.

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 1, 5:42 AM CDTFlash Flood WarningTSAOsage, Pawnee4 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.