Alert archive / Arkansas / Flash Flood Warnings in 1986

Flash Flood Warning 2, NWS Tulsa, OK

April 7, 1986Benton County, Madison County, Arkansas

NWS Tulsa, OK issued this flash flood warning at Apr 7, 1986, 11:32 PM CST for Benton County, Madison County, Arkansas. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued: Apr 7, 1986, 11:32 PM CST (05:32 UTC)
Expired: Apr 8, 1986, 2:30 AM CST
In force: 3 hr
Issued by: NWS Tulsa, OK
Area: Whole counties

Counties Benton County, AR, Madison County, AR

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, 5.5 hours before the alert went out and 82 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: 1744 J/kg
Mixed-layer CIN: -19 J/kg
Mixed-layer LCL: 1228 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 128 m²/s²
0-3 km storm-relative helicity: 229 m²/s²
Significant tornado parameter: 1.7
Supercell composite: 10.6

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KFSM 080532
FFWFSM
ARC007-087-080830-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE FORT SMITH AR
1132 PM CST MON APR 7 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING 
EFFECTIVE UNTIL 230 AM CST FOR PEOPLE IN THE FOLLOWING COUNTIES OF

ARKANSAS...BENTON AND MADISON

AT 1130 PM FLASH FLOODING WAS REPORTED IN BENTON COUNTY IN
NORTHWEST ARKANSAS..DUE TO THE PAST HEAVY RAIN AND RADAR
INDICATING MORE HEAVY THUNDERSTORMS MOVING INTO BENTON COUNTY
FLASH FLOODING WILL CONTINUE FOR THE NEXT FEW HOURS.
PERSNS NEAR LOW LYING AREAS AND SMALL STREAMS SHOULD SEEK
HIGHER GROUND.

FLASH FLOODING IS NOW OCCURRING IN THESE COUNTIES. SEEK HIGHER
GROUND AWAY FROM FLOOD PRONE STREAMS OR CREEKS.

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 OBnSERVED.

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

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, Apr 7, 7:58 PM CST, 3 hours 34 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
800 PM CST MON APR 7 1986

 TIME           EVENT
 455   PM CST   3/4 INCHE HAIL  5 MILES EAST OF NOWATA,OK.( OHP )

 544   PM CST   TORNADO 3 MILES NORTH OF ADAIR OK.  (HAM WEA. OBS.)

 555   PM CST   TORNADO JUST NE OF ADAIR OK.  (OHP)
                TREES DOWN AND A CAR OVERTURNED JUST NORTHWEST OF
                ADAIR, OK.   ( HAM WEA. OBS. )

 607   PM CST   SOLFBALL SIZE HAIL AT PENSACOLA, OK (HAM WEA. OBS.)

 608   PM CST   GOLFBALL SIZE HAIL OUTSIDE OF VINITA, OK  (OHP)

 617   PM CST   TREES DOWN AND FLOODING AT LANGLEY, OK  (HAM WEA. OBS. )

 704   PM CST   1 INCHE HAIL NEAR COLCORD, OK      (WSO, FSM)
 720   PM CST   3/4 INCHES HAIL NEAR WEST SILOAM SPRINGS, OK  (WSO,FSM)

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 7, 6:46 PM CST	Severe Thunderstorm Warning	TSA	Benton, Washington	59 min
Apr 7, 7:49 PM CST	Severe Thunderstorm Warning	TSA	Benton, Washington	56 min
Apr 7, 8:45 PM CST	Severe Thunderstorm Warning	TSA	Benton, Madison	60 min
Apr 7, 9:46 PM CST	Severe Thunderstorm Warning	TSA	Benton, Madison	59 min
Apr 7, 10:02 PM CST	Tornado Warning	TSA	Benton	58 min
Apr 7, 10:16 PM CST	Tornado Warning	TSA	Madison, Washington	59 min
Apr 7, 11:16 PM CST	Severe Thunderstorm Warning	TSA	Franklin, Madison	44 min
Apr 7, 11:35 PM CST	Severe Thunderstorm Warning	TSA	Benton	55 min
Apr 8, 12:44 AM CST	Severe Thunderstorm Warning	TSA	Washington	61 min
Apr 8, 1:01 AM CST	Severe Thunderstorm Warning	TSA	Johnson	59 min
Apr 8, 1:14 AM CST	Severe Thunderstorm Warning	TSA	Franklin, Logan	61 min
Apr 8, 1:14 AM CST	Severe Thunderstorm Warning	TSA	Crawford	61 min

Nearby

Flash Flood Warnings in Arkansas, 1986 Every 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.