Alert archive / Oklahoma / Flash Flood Warnings in 1986

Flash Flood Warning 3, NWS Tulsa, OK

April 19, 1986LeFlore County, Oklahoma

NWS Tulsa, OK issued this flash flood warning at Apr 19, 1986, 5:01 PM CST for LeFlore County, Oklahoma. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Apr 19, 1986, 5:01 PM CST (23:01 UTC)
Expired
Apr 19, 1986, 8:00 PM CST
In force
3 hr
Issued by
NWS Tulsa, OK
Area
Whole counties

County LeFlore 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 12:00Z, 11.0 hours before the alert went out and 237 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 12:00Z on 1986-04-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 1986-04-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -28 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2031 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
-28 m²/s²
0-3 km storm-relative helicity
42 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KFSM 192301
FFWFSM
OKC079-200200-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE FORT SMITH AR
501 PM CST SAT APR 19 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING 
EFFECTIVE UNTIL 800 PM CST FOR PEOPLE IN THE FOLLOWING COUNTY OF

OKLAHOMA...NORTHERN LEFLORE

AT 455 PM FLASH FLOODING WAS REPORTED NEAR SPIRO OKLAHOMA
WITH CREEKS OVERFLOWING AND SOME STREET FLOODING REPORTED
BY HAM SPOTTERS.  WEATHER RADAR INDICATES A LARGE AREA OF
HEAVY IN THE NORTHERN HALF OF LEFLORE COUNTY..THIS WILL
CONTINUE FOR THE NEXT SEVERAL HOURS.

IF YOU LIVE NEAR A FLOOD-PRONE CREEK OR RIVER..STAY ALERT OVER THE
NEXT FEW HOURS AND SEEK HIGHER GROUND IF HEAVY RAINS CONTINUE FOR A
LONG PERIOD OF TIME OR IF FLOODING IS OBSERVED.

CAMPERS IN THESE COUNTIES SHOULD BE ON THE ALERT FOR HEAVY DOWNPOURS
WHICH MAY CAUSE FLOODING IN A VERY SHORT PERIOD OF TIME.

IF YOU HAVE ANY REPORTS OFN FLOODING..PLEASE RELAY THE REPORT TO THE
NEAREST LAW ENFORCEMENT AGENCY.

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.