Alert archive / Oklahoma / Flash Flood Warnings in 2002

Flash Flood Warning 29, NWS Tulsa, OK

May 7, 2002Nowata County, Oklahoma

NWS Tulsa, OK issued this flash flood warning at May 7, 2002, 10:07 PM CDT for Nowata 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
May 7, 2002, 10:07 PM CDT (03:07 UTC)
Expired
May 8, 2002, 2:00 AM CDT
In force
4 hr
Issued by
NWS Tulsa, OK
Area
Whole counties

County Nowata County, OK

The radar

The Tulsa radar (KINX), 70 km from the middle of the area, began a volume at 03:09 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

Norman, OK (KOUN), launched 00:00Z, 3.1 hours before the alert went out and 238 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, Norman, OK at 00:00Z on 2002-05-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3304 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Norman, OK at 00:00Z on 2002-05-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 245 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
3304 J/kg
Mixed-layer CIN
-13 J/kg
Mixed-layer LCL
770 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
245 m²/s²
0-3 km storm-relative helicity
274 m²/s²
Significant tornado parameter
5.2
Supercell composite
22.5

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KTSA 080307
FFWTUL
OKC105-080700-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TULSA OK
1006 PM CDT TUE MAY 7 2002

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* FLASH FLOOD WARNING FOR
  NORTHERN NOWATA COUNTY IN NORTHEAST OKLAHOMA

* UNTIL 200 AM CDT

* AT 1006 PM CDT RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAIN  
  ACROSS NORTHERN PORTIONS OF NOWATA COUNTY. THESE STORMS AREA       
  MOVING SLOWLY EAST AT 20 MPH. RADAR INDICATES THAT 3 TO 4 INCHES   
  OF RAIN HAS ALREADY FALLEN ACROSS THE WARNED AREA. ANOTHER 1 TO 2  
  INCHES OF RAIN WILL BE POSSIBLE THROUGH 200 AM CDT.

  SOME MINOR URBAN FLOODING WAS REPORTED BY LAW ENFORCEMENT          
  OFFICIALS IN SOUTH COFFEYVILLE AT 955 PM. HEAVY RAIN WILL CONTINUE 
  FOR THE NEXT COUPLE OF HOURS...AND THIS WILL LIKELY LEAD TO FLASH  
  FLOODING. 

* SOME LOCATIONS THAT WILL CONTINUE TO BE AFFECTED BY THE HEAVY RAIN
  INCLUDE LENAPAH AND WANN.

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.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT. IT IS
IMPORTANT TO KNOW WHERE YOU ARE RELATIVE TO STREAMS...RIVERS...OR
CREEKS WHICH CAN BECOME KILLERS IN HEAVY RAINS. CAMPERS SHOULD AVOID
CAMPING ALONG STREAMS OR CREEKS DURING THREATENING RAINS.

$$

MANNING

LAT...LON 3702 9583 3684 9581 3684 9543 3702 9542
2 follow-up statements
000 
WGUS74 KTSA 080441
FFSTUL
OKC105-080700-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
1141 PM CDT TUE MAY 7 2002

...FLASH FLOOD WARNING CONTINUES FOR NORTHERN NOWATA COUNTY UNTIL 
200 AM CDT...

AT 1141 PM CDT...DOPPLER RADAR SHOWED THAT THE HEAVY RAIN THAT WAS 
AFFECTING NORTHERN NOWATA COUNTY EARLIER THIS EVENING HAD MOVED EAST 
OF THE WARNED AREA. LAW ENFORCEMENT OFFICIALS REPORT SOME HIGH WATER 
CONTINUING AROUND SOUTH COFFEYVILLE...HOWEVER...WATER LEVELS WERE 
BEGINNING TO RECEDE. 

HIGH WATER WILL REMAIN A PROBLEM IN SOME LOW LYING AREAS OF NORTHERN 
NOWATA COUNTY THROUGH 200 AM. 

RADAR INDICATES THAT 3 TO 4 INCHES OF RAIN HAD FALLEN OVER THE 
WARNED AREA. 

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.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT. IT IS
IMPORTANT TO KNOW WHERE YOU ARE RELATIVE TO STREAMS...RIVERS...OR
CREEKS WHICH CAN BECOME KILLERS IN HEAVY RAINS. CAMPERS SHOULD AVOID
CAMPING ALONG STREAMS OR CREEKS DURING THREATENING RAINS.

$$

MANNING
000 
WGUS74 KTSA 080706
FFSTUL
OKC105-080715-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
205 AM CDT WED MAY 8 2002

...FLASH FLOOD WARNING CONTINUES FOR NORTHERN NOWATA COUNTY HAS      
   EXPIRED... 

AT 200 AM CDT...DOPPLER RADAR INDICATED THAT THE HEAVY RAINFALL HAD 
ENDED ACROSS NORTHERN NOWATA COUNTY.  WATER LEVELS FROM EARLIER 
RAINS HAVE RECEDED...THEREFORE THE FLASH FLOOD WARNING HAS BEEN 
ALLOWED TO EXPIRE.  

$$

Nearby

Flash Flood Warnings in Oklahoma, 2002Every flash flood warning in 2002

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.