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829 

RWUS32 KCYS 122310

FFSCYS

WYZ066-069-130200-



SMALL STREAM FLOOD ADVISORY

NATIONAL WEATHER SERVICE CHEYENNE WY

510 PM MDT THU JUL 12 2001



...SMALL STREAM FLOOD ADVISORY HAS BEEN EXTENDED THROUGH 7 PM THIS

EVENING FOR WESTERN LARAMIE COUNTY...



SLOW MOVING THUNDERSTORMS PRODUCED LOCALLY HEAVY RAINFALL OVER 

WESTERN LARAMIE COUNTY IN SOUTHEAST WYOMING THIS AFTERNOON.  WHILE 

THE STORMS HAVE SINCE WEAKENED AS THEY MOVED SLOWLY EAST...RUNOFF 

WAS STILL CAUSING SOME FLOODING PROBLEMS WEST AND SOUTHWEST OF 

CHEYENNE.  DOPPLER WEATHER RADAR IN CHEYENNE ESTIMATED 2 TO 2 1/2

INCHES OF TOTAL RAINFALL IN THIS AREA.  



SOME MINOR FLOODING HAD OCCURRED EARLIER ALONG HAPPY JACK ROAD ABOUT 

20 MILES WEST OF CHEYENNE.  FLOODING WAS STILL OCCURRING ABOUT 25

MILES WEST/SOUTHWEST OF CHEYENNE NEAR THE COMMUNITY OF HARRIMAN AND

ALONG GOOSE...LONE TREE AND DUCK CREEKS.  THESE SMALL CREEKS FLOW

EAST AND THEN EVENTUALLY SOUTH ALONG I-25 THROUGH THE TERRY BISON

RANCH AREA INTO NORTHERN COLORADO.



EVEN THOUGH ONLY A FEW LIGHT RAIN SHOWERS WILL STILL BE AFFECTING

THE AREA WEST AND SOUTHWEST OF CHEYENNE...THE SMALL STREAM FLOOD 

ADVISORY HAS BEEN EXTENDED UNTIL 7 PM DUE TO THE RUNOFF PROBLEMS.



USE CAUTION IF YOU ARE NEAR A STREAM BED OR CREEK.  HEAVY RAINFALL 

IN A SHORT PERIOD OF TIME CAN CAUSE EVEN DRY STREAM BEDS TO FILL 

WITH SWIFTLY FLOWING WATER.  STREAMS OR CREEKS MAY GO OUT OF THEIR 

BANKS AND RUN ACROSS ROADS.  DIRT ROADS WILL BE ESPECIALLY PRONE TO 

EROSION FROM SWIFTLY FLOWING WATER.  NEVER ATTEMPT TO CROSS WATER    

OF AN UNKNOWN DEPTH EITHER ON FOOT OR IN A VEHICLE.



$$



JLH 



WCJIN-WYSE

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