Alert archive / Oklahoma / Flash Flood Warnings in 1998

Flash Flood Warning 32, NWS Tulsa, OK

September 14, 1998Adair County, Cherokee County, Sequoyah County, Oklahoma

NWS Tulsa, OK issued this flash flood warning at Sep 14, 1998, 1:25 AM CDT for Adair County, Cherokee County, Sequoyah County, Oklahoma. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
Sep 14, 1998, 1:25 AM CDT (06:25 UTC)
Expired
Sep 14, 1998, 5:15 AM CDT
In force
4 hr
Issued by
NWS Tulsa, OK
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Adair County, OK, Cherokee County, OK, Sequoyah County, OK

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 6.4 hours before the alert went out and 164 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 1998-09-14Temperature 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 00:00Z on 1998-09-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 286 square meters per square second.193958Sfc1 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
888 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
286 m²/s²
0-3 km storm-relative helicity
349 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 KTUL 140629
FFWTUL
OKC001-021-135-141015-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TULSA OK
125 AM CDT MON SEP 14 1998

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* FLASH FLOOD WARNING FOR
     CHEROKEE COUNTY IN EAST CENTRAL OKLAHOMA
     SEQUOYAH COUNTY IN EAST CENTRAL OKLAHOMA
     ADAIR COUNTY IN EAST CENTRAL OKLAHOMA

* UNTIL 515 AM CDT

* AT 121 AM CDT RADAR INDICATED VERY HEAVY RAIN ACROSS WESTERN
  SEQUOYAH AND MUCH OF CHEROKEE COUNTIES. RAINFALL RATES OF 1 TO 2 
  INCHES PER HOUR WERE OCCURING IN THIS AREA. RAINFALL AMOUNTS IN 
  THE WARNING AREA MAY EXCEED 5 INCHES THROUGH 5 AM. 

* SOME LOCATIONS AFFECTED INCLUDE... SCRAPER...ELDON...COOKSON...
  TAHLEQUAH...BOX...MARBLE CITY...BRUSHY...VIAN...MC KEY...GANS...
  SALLISAW...PROCTOR...CHRISTIE...BARON...BUNCH AND STILWELL

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 HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY
IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

LAT...LON 3552 9510 3539 9467 3615 9458 3607 9513

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.

NWS Tulsa, OK wrote its last area forecast discussion before this flash flood warning went out at Sep 13, 8:30 PM CDT, 4 hours 55 minutes earlier.

Area forecast discussion, Sep 13, 8:30 PM CDT, 4 hours 55 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
830 PM CDT SUN SEP 13 1998

FLASH FLOOD WATCH WILL BE CONTINUED THROUGH TONIGHT.

REMNANT OF FRANCES STUBBORNLY EDGING ACROSS RED RIVER THIS EVENING
AND WILL CONTINUE TO SHEAR OUT ALONG A N/S AXIS ACROSS CENTRAL OK.
MOST IMPORTANT FEATURE WILL BE THE STRONG LOW LEVEL JET TO THE EAST
OF THE LOW PUMPING MORE TROPICAL MOISTURE NORTHWARD.  PROFILERS SHOW
SOUTHERLY 850 MB WINDS 30-40 KT ALREADY WHICH MESOETA INCREASES TO
50 KT OVERNIGHT.  NORTHWARD MOVING TROPICAL SHRA WILL TRAIN ACROSS
OK/AR BORDER ZONES THROUGHOUT THE NIGHT.  THUS...LOOKING FOR AMOUNTS
NEAR FFG VALUES IN EASTERN OK AND WESTERN AR BY MONDAY MORNING.
WITH APPROACHING S/WV IN CO/WY...BELIEVE EX-FRANCES MAY GET DRAWN
BACK WEST A BIT AND PULL HEAVIER PRECIP ALONG WITH IT.  PRECIP WILL
BE ENHANCED BY CONVERGENCE ALONG THE SFC SHEAR ZONE IN CENTRAL OK.
THEREFORE I'VE PUT GREATEST QPF AMOUNTS TO THE WEST OF OK/AR
BORDER...BUT FSM AND FYV SHOULD GET THEIR FAIR SHARE OF HEAVY RAIN
TONIGHT...AS WELL.

LOW SHOULD BE SWEPT TO THE NE WITH APPROACHING S/WV ON MONDAY
AFTERNOON...SO IF WE CAN MAKE IT THROUGH TONIGHT WITH NO
FLOODING...WE SHOULD BE IN GOOD SHAPE ON MONDAY.  STILL THE CHANCE FOR
LINGERING SHOWERS ON MONDAY...BUT PRECIP AMOUNTS WILL BE TOLERABLE.

TEMPS AND POPS FROM PREVIOUS PKG LOOK GOOD.  SEE NO REASON TO UPDATE
FORECAST.  WILL ISSUE FFS AROUND 9 DPM.

FCSTID = 27

.TUL...
OK...FLASH FLOOD WATCH FOR TONIGHT FOR ZONES OKZ049...OKZ053>077.

AR...FLASH FLOOD WATCH FOR TONIGHT FOR ZONES ARZ001>002...
ARZ010>011...ARZ019>020...ARZ029.

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 13, 11:37 PM CDTFlash Flood WarningTSACherokee, Muskogee3 hr
Sep 14, 3:18 AM CDTFlash Flood WarningTSAOttawa3 hr
Sep 14, 4:54 AM CDTFlash Flood WarningTSADelaware3 hr
Sep 14, 5:02 AM CDTFlash Flood WarningTSAMuskogee3 hr
Sep 14, 5:18 AM CDTFlash Flood WarningTSAAdair, Cherokee, Sequoyah3 hr
Sep 14, 6:12 AM CDTFlash Flood WarningTSAOttawa108 min

Nearby

Flash Flood Warnings in Oklahoma, 1998Every flash flood warning in 1998

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.