Alert archive / Arkansas / Flash Flood Warnings in 1990

Flash Flood Warning 43, NWS Tulsa, OK

October 8, 1990Polk County, Arkansas

NWS Tulsa, OK issued this flash flood warning at Oct 8, 1990, 6:29 AM CDT for Polk County, Arkansas. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued: Oct 8, 1990, 6:29 AM CDT (11:29 UTC)
Expired: Oct 8, 1990, 8:30 AM CDT
In force: 2 hr
Issued by: NWS Tulsa, OK
Area: Whole counties

County Polk 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

Longview/Gregg, TX (KGGG), launched 00:00Z, 11.5 hours before the alert went out and 240 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: 1403 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 1397 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 40 m²/s²
0-3 km storm-relative helicity: 52 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 2.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KFSM 081130
FFWFSM
ARC113-081330-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE FORT SMITH AR
629 AM CDT MON OCT 8 1990
 
THE NATIONAL WEATHER SERVICE IN FORT SMITH HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  830 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTHWEST ARKANSAS
 
   ...POLK COUNTY
 
MODERATE TO LHEAVY RAIN CONTINUES IN PARTS OF POLK COUNTY ARKANSAS
WHERE HIGH WATER ALREADY EXIST. THIS WILL CONTINUE TO CAUSE FLASH
FLOODING DURING THE NEXT TWO HOURS WHEN THE RAIN SHOULD DECREASE.
 
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE
THE DANGERS OF FLOODS AND FLASH FLOODS.  IF FLASH FLOODING IS
OBSERVED...ACT QUICKLY.  MOVE UP TO E}SCAPE FLOOD WATERS.  DO
NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

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 8, 6:00 AM CDT, 29 minutes before

OKZ007-008-012-013-081145-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
600 AM CDT MON OCT 8 1990

        ...GET READY FOR A COOL AND DAMP DAY...

A RATHER COOL AND DAMP DAY WILL START THE WEEK IN NORTHEAST
OKLAHOMA AND SURROUNDING AREAS. A SHALLOW LAYER OF COLD AIR NEAR
THE SURFACE WILL CAUSE THE COOL TEMPERATURES WHILE VERY MOIST AIR
ABOVE THE SURFACE WILL CAUSE CLOUDS AND OCCASIONAL PRECIPITATION.
LIGHT TO MODERATE RAIN WILL LIKELY FALL FOR MOST OF TODAY AND
LAST THROUGH TONIGHT. A STRONG UPPER LEVEL STORM SYSTEM TO THE
WEST OF THE AREA WILL MOVE EAST AND BRING THE THREAT OF A FEW
THUNDERSTORMS BOTH TODAY AND TONIGHT.

HIGH TEMPERATURES TODAY IN NORTHEAST OKLAHOMA WILL LIKELY REMAIN IN
THE 50S IN MOST AREAS WITH NORTH WINDS AROUND 15 MPH. IF YOU PLAN
TO BE OUTDOORS TODAY...REMEMBER TO DRESS APPROPRIATELY AND TAKE ALONG
YOUR UMBRELLA. THE RAIN IS EXPECTED TO CONTINUE THROUGH TUESDAY
MORNING WITH CONTINUED COOL TEMPERATURES AND STRONG NORTH WINDS.

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 8, 12:32 AM CDT	Flash Flood Warning	TSA	Polk	3 hr
Oct 8, 3:29 AM CDT	Flash Flood Warning	TSA	Polk	3 hr
Oct 8, 11:07 AM CDT	Flash Flood Warning	TSA	Polk	3 hr

Nearby

Flash Flood Warnings in Arkansas, 1990 Every flash flood warning in 1990

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.