

000 

WGUS75 KBYZ 181112

FFSBYZ



FLASH FLOOD STATEMENT

NATIONAL WEATHER SERVICE BILLINGS MT

503 AM MDT WED JUN 18 2008



MTC111-181415-

/O.CON.KBYZ.FF.W.0002.000000T0000Z-080618T1415Z/

/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

YELLOWSTONE MT-

503 AM MDT WED JUN 18 2008



...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 815 AM MDT FOR

NORTHEASTERN YELLOWSTONE COUNTY...



WHILE NO PRECIPITATION HAS FALLEN OVER THE WARNED AREA SINCE ABOUT 4 

AM MDT...RUNOFF FROM THE VERY HEAVY RAINFALL OVERNIGHT WILL CONTINUE 

TO PRODUCE FLASH FLOODING OVER THE WARNED AREA FOR THE NEXT SEVERAL 

HOURS. FLOODING OF SMALL CREEKS AND STREAMS...COUNTRY ROADS...AS 

WELL AS FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS IS LIKELY 

OCCURRING NOW.



ADDITIONAL RAINFALL IS POSSIBLE OVER THE WARNED AREA THIS 

MORNING...ALTHOUGH NOT IMMINENT...AS SCATTERED SHOWERS AND 

THUNDERSTORMS WEST OF THE WARNED ARE MOVING SLOWLY EASTWARD. 

PRECIPITATION AMOUNTS ARE CURRENTLY LIGHT WITH THIS ACTIVITY BUT 

COULD INCREASE AS IT MOVES TOWARD MOIST AIR FURTHER EAST.



DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE 

ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS 

SAFELY. MOVE TO HIGHER GROUND.



BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE

DANGERS OF FLOODING. 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.



TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY

YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN

BILLINGS.



LAT...LON 4616 10750 4599 10812 4622 10827 4627 10811

      4626 10804 4629 10803 4638 10770

TIME...MOT...LOC 1103Z 180DEG 0KT 4617 10789



$$



000 

WGUS75 KBYZ 181112

FFSBYZ



FLASH FLOOD STATEMENT

NATIONAL WEATHER SERVICE BILLINGS MT

503 AM MDT WED JUN 18 2008



MTC111-181415-

/O.CON.KBYZ.FF.W.0002.000000T0000Z-080618T1415Z/

/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

YELLOWSTONE MT-

503 AM MDT WED JUN 18 2008



...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 815 AM MDT FOR

NORTHEASTERN YELLOWSTONE COUNTY...



WHILE NO PRECIPITATION HAS FALLEN OVER THE WARNED AREA SINCE ABOUT 4 

AM MDT...RUNOFF FROM THE VERY HEAVY RAINFALL OVERNIGHT WILL CONTINUE 

TO PRODUCE FLASH FLOODING OVER THE WARNED AREA FOR THE NEXT SEVERAL 

HOURS. FLOODING OF SMALL CREEKS AND STREAMS...COUNTRY ROADS...AS 

WELL AS FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS IS LIKELY 

OCCURRING NOW.



ADDITIONAL RAINFALL IS POSSIBLE OVER THE WARNED AREA THIS 

MORNING...ALTHOUGH NOT IMMINENT...AS SCATTERED SHOWERS AND 

THUNDERSTORMS WEST OF THE WARNED ARE MOVING SLOWLY EASTWARD. 

PRECIPITATION AMOUNTS ARE CURRENTLY LIGHT WITH THIS ACTIVITY BUT 

COULD INCREASE AS IT MOVES TOWARD MOIST AIR FURTHER EAST.



DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE 

ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS 

SAFELY. MOVE TO HIGHER GROUND.



BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE

DANGERS OF FLOODING. 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.



TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY

YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN

BILLINGS.



LAT...LON 4616 10750 4599 10812 4622 10827 4627 10811

      4626 10804 4629 10803 4638 10770

TIME...MOT...LOC 1103Z 180DEG 0KT 4617 10789



$$

