Hazardous Weather Outlook

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE RAPID CITY SD
320 PM MDT SUN MAR 9 2014

SDZ001-002-012>014-024>032-041>044-046-047-049-072>074-WYZ054>058-
071-101300-
HARDING-PERKINS-BUTTE-NORTHERN MEADE CO PLAINS-ZIEBACH-
NORTHERN BLACK HILLS-NORTHERN FOOT HILLS-RAPID CITY-
SOUTHERN FOOT HILLS-CENTRAL BLACK HILLS-SOUTHERN BLACK HILLS-
CUSTER CO PLAINS-PENNINGTON CO PLAINS-HAAKON-FALL RIVER-SHANNON-
JACKSON-BENNETT-MELLETTE-TODD-TRIPP-STURGIS/PIEDMONT FOOT HILLS-
SOUTHERN MEADE CO PLAINS-HERMOSA FOOT HILLS-NORTHERN CAMPBELL-
SOUTHERN CAMPBELL-WESTERN CROOK-WYOMING BLACK HILLS-WESTON-
NORTHEASTERN CROOK-
320 PM MDT SUN MAR 9 2014 /420 PM CDT SUN MAR 9 2014/

...WINTER WEATHER RETURNS TO THE REGION MONDAY NIGHT...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN SOUTH DAKOTA AND
NORTHEASTERN WYOMING.

.DAY ONE...THIS AFTERNOON AND TONIGHT

WATER IS BEGINNING TO FLOW IN THE LARGER RIVERS ACROSS NORTHEAST
WYOMING AND WESTERN SOUTH DAKOTA. THE COMBINATION OF RUNOFF AND
HEAVY ICE IN THE RIVERS MAY RESULT IN THE FORMATION OF ICE JAMS.
ICE JAMS CAN CAUSE RAPID FLUCTUATIONS IN THE WATER LEVEL OVER A
SHORT PERIOD OF TIME. FLOODING OF LOW LYING AREAS ALONG THE RIVERS
IS LIKELY WITH EACH ICE JAM.

ICE JAMS AND FLOODING ARE POSSIBLE ON THE LITTLE MISSOURI
RIVER...GRAND RIVER...MOREAU RIVER...BELLE FOURCHE
RIVER...CHEYENNE RIVER...WHITE RIVER...AND THE SMALLER TRIBUTARIES
THAT FLOW INTO THESE RIVERS.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

MILD TEMPERATURES WILL CONTINUE ON MONDAY...WITH THE POTENTIAL FOR
ICE JAM FLOODING CONTINUING INTO NEXT WEEK. A STRONG STORM SYSTEM
WILL CROSS THE AREA MONDAY NIGHT THROUGH TUESDAY MORNING. RAIN WILL
CHANGE TO SNOW MONDAY NIGHT...WITH SNOW ACCUMULATIONS EXPECTED BEFORE
THE SNOW ENDS TUESDAY AFTERNOON. THERE IS THE POTENTIAL FOR 6 OR MORE
INCHES OF SNOW ACROSS THE NORTHERN BLACK HILLS WITH 1 TO 4 INCHES
POSSIBLE ON THE PLAINS.

THE THREAT FOR ICE JAM FLOODING MAY INTENSIFY ONCE AGAIN LATER IN
THE WEEK WITH WARM TEMPERATURES AND NEW SNOW MELT.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED TODAY IF ICE JAMS FORM.

&&

STAY TUNED TO NOAA WEATHER RADIO FOR FURTHER DETAILS OR UPDATES...
OR CHECK OUR WEB SITE AT WEATHER.GOV/RAPIDCITY

$$

JC