Alert archive / Oklahoma / Flash Flood Warnings in 1998

Flash Flood Warning 7, NWS Tulsa, OK

March 7, 1998Mayes County, Oklahoma

NWS Tulsa, OK issued this flash flood warning at Mar 7, 1998, 12:11 PM CST for Mayes 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 counties it named.

The facts

Issued
Mar 7, 1998, 12:11 PM CST (18:11 UTC)
Expired
Mar 7, 1998, 4:00 PM CST
In force
4 hr
Issued by
NWS Tulsa, OK
Area
Whole counties

County Mayes County, OK

The radar

The Tulsa radar (KINX), 33 km from the middle of the area, began a volume at 18:10 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 6.2 hours before the alert went out and 144 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 1998-03-07Temperature 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 1998-03-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 106 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
519 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
106 m²/s²
0-3 km storm-relative helicity
128 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 071810
FFWTUL
OKC097-072200-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TULSA OK
1211 PM CST SAT MAR 7 1998

THE NATIONAL WEATHER SERVICE IN TULSA OK HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL 400 PM CST
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN NORTHEASTERN OKLAHOMA

   ...MAYES COUNTY

AT 1210 PM...PRYOR EMERGENCY MANAGEMENT REPORTED WATER RISING
RAPIDLY NEAR LOW WATER CROSSINGS IN PRYOR. RADAR ESTIMATES FROM 1 TO
2 INCHES OF RAIN HAS FALLEN IN MAYES COUNTY AND AN ADDITIONAL 1 TO 2
INCHES MAY FALL THROUGH THIS AFTERNOON...AS SHOWERS AND
THUNDERSTORMS CONTINUE TO MOVE ACROSS THE AREA.


AREA RESIDENTS SHOULD MONITOR FLOOD CONDITIONS... AND BE PREPARED
TO MOVE TO HIGHER GROUND... SHOULD FLOOD WATERS THREATEN. IF FLASH
FLOODING IS OBSERVED... ACT QUICKLY. MOVE TO HIGHER GROUND TO
ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN
WATER BEGINS RISING.

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 6, 10:17 PM CSTSevere Thunderstorm WarningTSAChoctaw33 min
Mar 7, 7:26 AM CSTSevere Thunderstorm WarningTSATulsa49 min
Mar 7, 11:37 AM CSTSevere Thunderstorm WarningTSALatimer43 min
Mar 7, 12:17 PM CSTFlash Flood WarningTSARogers, Tulsa4 hr
Mar 7, 2:41 PM CSTSevere Thunderstorm WarningTSALeFlore, Sequoyah49 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; radar from the NEXRAD Level II archive.