Flash Flood Warning 1, NWS Norman, OK

000 
WGUS74 KOUN 190408
FFSOKC
OKC005-013-095-190545-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
1005 PM CST MON MAR 18 2002

...FLASH FLOOD WARNINGS FOR ATOKA...BRYAN...AND MARSHALL COUNTIES
   CONTINUE UNTIL MIDNIGHT...

AT 1000 PM...NATIONAL WEATHER SERVICE RADAR INDICATED AN AREA
OF SHOWERS AND THUNDERSTORMS EXTENDING FROM REDDEN TO DURANT AND 
KINGSTON.  THIS AREA OF RAIN WILL CONTINUE TO MOVE QUICKLY NORTHEAST
THROUGH MIDNIGHT.  PARTS OF SOUTHERN BRYAN COUNTY CAN EXPECT UP TO 
AN ADDITIONAL INCH OF RAIN WITH LESSER AMOUNTS TO THE NORTH AND WEST.
THIS WILL BRING RAINFALL TOTALS CLOSE TO 3 1/2 INCHES SINCE LATE
THIS AFTERNOON.  THUNDERSTORMS ARE CONTINUING TO DEVELOP LATE
THIS EVENING ACROSS NORTH TEXAS AND WILL MOVE BACK INTO SOUTHEAST
OKLAHOMA OVERNIGHT. 

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROADWAY.
THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY.
VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO
HIGHER GROUND.

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL 
CREEKS AND STREAMS.   ADDITIONALLY...COUNTRY ROADS AND FARM LANDS 
ALONG THE BANKS OF CREEKS AND STREAMS AND OTHER LOW LYING AREAS ARE 
SUBJECT TO FLASH FLOODING.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE TO
HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT DRIVE VEHICLES INTO
AREAS WHERE WATER COVERS THE ROADWAY.

LAT...LON 3421 9579 3390 9597 3379 9619 3380 9644
          3380 9690 3419 9691 3411 9646 3415 9642
          3441 9638 3442 9610 3467 9605 3460 9581

SIX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
813 PM CST MON MAR 18 2002

MAIN FOCUS TONITE IS ON HEAVY RAINFALL POTENTIAL IN THE SOUTHEAST
ZONES..AND POTENTIAL FOR CONVECTION OVER SW KS TO EVENTUALLY WORK
INTO NW OK LATER TONITE. EXAMINATION OF 00Z UA PLOTS/SOUNDINGS AND
CURRENT SFC DATA CONTINUE TO POINT TO A RATHER POTENT HEAVY RAIN
SITUATION ACROSS OUR SOUTHEASTERN MOST ZONES.  MESONET INDICATES AOA
2 INCHES OF RAIN HAVE ALREADY FALLEN OVER ATOKA/BRYAN COUNTIES.. BUT
WHAT IS MORE CONCERNING ATTM IS WHAT APPEARS TO BE HAPPENING JUST
UPSTREAM. FTW 00Z SOUNDING SHOWS EVIDENCE OF A MAUL /MOIST
ABSOLUTELY UNSTABLE LAYER/ BETWEEN 900-850 MB WITH TREMENDOUS
MOISTURE TRANSPORT/WAA IN THE LAYER BELOW 850 MB ASSOCIATED WITH A
40 KT 850 LLJ AND A 925 DEWPOINT OF PLUS 15.  NOT SURPRISINGLY..NEW
CONVECTION CONTINUES TO DEVELOP WEST OF THE DFW METROPLEX..AND
EVENTUALLY ALL OF THIS ACTIVITY WILL TRAIN ACROSS LOCATIONS SE OF A
LINE FROM MARIETTA TO COALGATE FOR THE NEXT SEVERAL HOURS. ALSO
EXPECT SOME INCREASE IN AREAL COVERAGE ALONG THE I-44 CORRIDOR THRU
THE REST OF THE EVENING.  THE CURRENT FLASH FLOOD WATCH LOOKS TO BE
IN EXCELLENT SHAPE..BUT WE MAY OPT TO FRESHEN THE INFO THEREIN..AND
ALSO IN THE HAZARDOUS WEATHER OUTLOOK. OVERALL THE CURRENT FORECAST
IS IN PRETTY GOOD SHAPE.. AND ONLY COSMETIC CHANGES WILL BE
FORTHCOMING. WE HOPE TO HAVE UPDATES OUT BY AROUND 9 PM OR SHORTLY
THEREAFTER.
 MILLER

.OUN...
OK...FLASH FLOOD WATCH THRU TUESDAY OKZ032-041>043-046>048-050>052.
TX...NONE.