Flash Flood Watch

FLOOD WATCH
NATIONAL WEATHER SERVICE BILLINGS MT
326 AM MDT MON MAY 20 2013

...FLASH FLOOD AND DEBRIS FLOW POTENTIAL IN AREAS BURNED BY
WILDFIRES LAST YEAR ACROSS SOUTH CENTRAL AND SOUTHEAST MONTANA...

.RAIN TODAY AND TONIGHT COULD CAUSE RAPID RUNOFF...FLASH FLOODING
AND DEBRIS FLOWS IN AND AROUND AREAS BURNED BY WILDFIRES LAST
YEAR.

MTC003-011-075-087-103-210930-
/O.CON.KBYZ.FF.A.0002.000000T0000Z-130521T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BIG HORN-CARTER-POWDER RIVER-ROSEBUD-TREASURE-
INCLUDING THE CITIES OF...HARDIN...CROW AGENCY...EKALAKA...
BROADUS...COLSTRIP...LAME DEER...FORSYTH...HYSHAM
326 AM MDT MON MAY 20 2013

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH LATE TONIGHT...

THE FLASH FLOOD WATCH CONTINUES FOR

* PORTIONS OF SOUTH CENTRAL MONTANA AND SOUTHEAST MONTANA...
  INCLUDING THE FOLLOWING COUNTIES...IN SOUTH CENTRAL MONTANA...
  BIG HORN. IN SOUTHEAST MONTANA...CARTER...POWDER RIVER...
  ROSEBUD AND TREASURE.

* THROUGH LATE TONIGHT

* RAINFALL WILL CONTINUE TODAY AND TONIGHT OVER MUCH OF THE AREA.
  LOCALLY HEAVY AMOUNTS ARE POSSIBLE. REMEMBER...IT DOES NOT TAKE
  MUCH RAIN IN A SHORT PERIOD OF TIME TO CAUSE FLASH FLOODING AND
  DEBRIS FLOWS IN AND DOWNSTREAM OF AREAS AFFECTED BY WILDFIRES.

* THE AREAS AT RISK ARE WITHIN...DOWNSTREAM OR DOWNSLOPE OF BURN
  AREAS FROM THE WILDFIRES WHICH OCCURRED LAST YEAR. THIS INCLUDES
  THE SARPY HILL...COAL SEAM...CHALKY...SAND CREEK...ASH CREEK...
  TAYLOR...DUTCH...AND DUGAN FIRES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FLASH FLOODING AND DEBRIS FLOWS ARE VERY DANGEROUS. BE AWARE OF
YOUR ENVIRONMENT. BE PREPARED TO TAKE ACTION ON SHORT NOTICE IF
HEAVY RAINFALL OCCURS. BECAUSE FLASH FLOODS IN THESE AREAS OCCUR
SO QUICKLY...DO NOT WAIT FOR A WARNING TO TAKE ACTION.

&&

$$

CJS

Flood Advisory

FLOOD ADVISORY
NATIONAL WEATHER SERVICE BILLINGS MT
453 AM MDT MON MAY 20 2013

MTC003-111-220030-
/O.CON.KBYZ.FA.Y.0001.000000T0000Z-130522T0030Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BIG HORN MT-YELLOWSTONE MT-
453 AM MDT MON MAY 20 2013

...THE FLOOD ADVISORY REMAINS IN EFFECT UNTIL 630 PM MDT TUESDAY FOR
EXTREME WEST CENTRAL BIG HORN AND SOUTHWESTERN YELLOWSTONE
COUNTIES...

FOUR OR MORE INCHES OF RAIN HAS FALLEN SINCE SATURDAY MORNING ALONG
THE NORTHERN SLOPES OF THE PRYOR MOUNTAINS. THIS RAINFALL WILL CAUSE
RISES ON PRYOR CREEK AND ITS TRIBUTARIES OVER THE NEXT COUPLE OF
DAYS. SOME MINOR LOWLAND FLOODING IS POSSIBLE ALONG PRYOR CREEK FROM
THE TOWN OF PRYOR TO ITS CONFLUENCE WITH THE YELLOWSTONE RIVER AT
HUNTLEY.

HEAVY RAINFALL OVER THE LAST FEW DAYS WILL ALSO CAUSE RISES ON BLUE
CREEK IN SOUTHWESTERN YELLOWSTONE COUNTY. MINOR FLOODING IS POSSIBLE.

UP TO AN ADDITIONAL INCH OF RAIN IS POSSIBLE TODAY. RESIDENTS IN
THESE AREAS ARE URGED TO PREPARE FOR RISING WATER LEVELS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

&&

LAT...LON 4525 10866 4550 10864 4563 10856 4581 10834
      4584 10816 4525 10815

$$

CJS

Lake Wind Advisory

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE GLASGOW MT
924 AM MDT MON MAY 20 2013

MTZ016-017-021>023-060-210300-
/O.CON.KGGW.LW.Y.0006.130520T1800Z-130521T0300Z/
CENTRAL AND SOUTHEAST PHILLIPS-CENTRAL AND SOUTHERN VALLEY-
PETROLEUM-GARFIELD-MCCONE-SOUTHWEST PHILLIPS-
INCLUDING THE CITIES OF...MALTA...SACO...GLASGOW...FORT PECK...
HINSDALE...FRAZER...WINNETT...JORDAN...CIRCLE...ZORTMAN
924 AM MDT MON MAY 20 2013

...LAKE WIND ADVISORY REMAINS IN EFFECT UNTIL 9 PM MDT THIS
EVENING FOR FORT PECK LAKE...

A LAKE WIND ADVISORY FOR FORT PECK LAKE REMAINS IN EFFECT UNTIL
9 PM MDT THIS EVENING.

* TIMING...THE STRONGEST WINDS WILL OCCUR DURING THE AFTERNOON.

* WINDS...NORTH 15 TO 25 MPH WITH GUSTS AS HIGH AS 35 MPH.

* IMPACTS...THESE WINDS WILL MAKE OPEN WATERS OF THE LAKE ROUGH
  AND HAZARDOUS...AND MAY RESULT IN HIGH WAVES WHICH MAY TIP OR
  SWAMP SMALLER CRAFT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BOATERS SHOULD USE EXTREME CAUTION IF VENTURING ONTO FORT PECK
LAKE. FOR YOUR PERSONAL SAFETY...AVOID THE OPEN WATERS. STAY
CLOSE TO SHORE OR AROUND PROTECTED AREAS.

&&

$$

Hazardous Weather Outlook

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREAT FALLS MT
445 AM MDT MON MAY 20 2013

MTZ009-048-211200-
NORTHERN ROCKY MOUNTAIN FRONT-SOUTHERN ROCKY MOUNTAIN FRONT-
445 AM MDT MON MAY 20 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL
MONTANA.

.DAY ONE...TODAY AND TONIGHT

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER TODAY AND
TONIGHT IS LOW.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

ANOTHER MOIST STORM SYSTEM WILL MOVE INTO THE PACIFIC NORTHWEST
WEDNESDAY THEN REMAIN NEARLY STATIONARY THROUGH THE END OF THE
WEEK. THIS SYSTEM HAS THE POTENTIAL TO BRING SIGNIFICANT
PRECIPITATION TO THE REGION AS SEVERAL DISTURBANCES ROTATE AROUND
THE LOW LATER THIS WEEK. LATEST FORECAST MODEL PROJECTIONS
INDICATE THAT WESTERN PORTIONS OF NORTH CENTRAL MT WILL BE MOST
LIKELY TO SEE SIGNIFICANT PRECIPITATION AMOUNTS WEDNESDAY NIGHT
THROUGH FRIDAY. WE WILL CONTINUE TO MONITOR THIS SYSTEM FOR
POSSIBLE HYDROLOGIC IMPACTS LATER THIS WEEK WITH MAIN CONCERN FOR
AREAS ALONG THE ROCKY MOUNTAIN FRONT AND GLACIER NATIONAL PARK
AREA WHERE HIGHEST PRECIPITATION AMOUNTS ARE LIKELY TO OCCUR ALONG
WITH SEASONALLY HIGH STREAM-FLOWS DUE TO MELTING SNOWPACK.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

$$

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RIVERTON WY
400 AM MDT MON MAY 20 2013

WYZ001>020-022>030-211200-
ABSAROKA MOUNTAINS-BIGHORN MOUNTAINS SOUTHEAST-
BIGHORN MOUNTAINS WEST-CASPER MOUNTAIN-CODY FOOTHILLS-
EAST SWEETWATER COUNTY-FLAMING GORGE-
GREEN MOUNTAINS AND RATTLESNAKE RANGE-JACKSON HOLE-LANDER FOOTHILLS-
NATRONA COUNTY LOWER ELEVATIONS-NORTH BIG HORN BASIN-
NORTHEAST JOHNSON COUNTY-OWL CREEK AND BRIDGER MOUNTAINS-
ROCK SPRINGS AND GREEN RIVER-SALT RIVER AND WYOMING RANGES-
SOUTH LINCOLN COUNTY-SOUTHEAST BIG HORN BASIN-
SOUTHEAST JOHNSON COUNTY-SOUTHWEST BIG HORN BASIN-STAR VALLEY-
TETON AND GROS VENTRE MOUNTAINS-UPPER GREEN RIVER BASIN-
UPPER GREEN RIVER BASIN FOOTHILLS-UPPER WIND RIVER BASIN-
WIND RIVER BASIN-WIND RIVER MOUNTAINS EAST-WIND RIVER MOUNTAINS WEST-
YELLOWSTONE NATIONAL PARK-
400 AM MDT MON MAY 20 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL WYOMING.

.DAY ONE...TODAY AND TONIGHT

RAIN SHOWERS WILL REMAIN LIKELY OVER CENTRAL WYOMING WITH HIGHER
ELEVATION SNOW ONCE AGAIN EXPECTED TODAY. ADDITIONAL RAINFALL ON
ALREADY SATURATED GROUNDS TODAY...COULD LEAD TO MINOR FLOODING IN LOW
LYING OR POOR DRAINAGE AREAS...AS WELL AS...AROUND BURN SCAR AREAS
AND QUICK RESPONDING CREAKS AND STREAMS ESPECIALLY ON THE EASTERN
SLOPES OF THE BIG HORN MOUNTAINS.

STRONG NORTHWEST WINDS WILL OCCUR ACROSS NORTHERN JOHNSON COUNTY
TODAY.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

WEDNESDAY AND THURSDAY...STRONG THUNDERSTORMS POSSIBLE.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS ARE ENCOURAGED TO REPORT ANY MOUNTAIN SNOWFALL AMOUNTS...
RAIN TOTALS...ANY FLOODING...AS WELL AS ANY CREEKS OR STREAMS THAT
ARE BANKFULL OR RISING FAST. THANK YOU.

$$

TEAM RIVERTON

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BILLINGS MT
342 AM MDT MON MAY 20 2013

MTZ028>042-056>058-063>068-WYZ098-099-210945-
SOUTHERN WHEATLAND-MUSSELSHELL-TREASURE-NORTHERN ROSEBUD-CUSTER-
FALLON-NORTHERN STILLWATER-YELLOWSTONE-POWDER RIVER-CARTER-
SOUTHERN BIG HORN-EASTERN CARBON-NORTHERN PARK-
NORTHERN SWEET GRASS-GOLDEN VALLEY-RED LODGE FOOTHILLS-
NORTHERN BIG HORN-SOUTHERN ROSEBUD-JUDITH GAP-PARADISE VALLEY-
LIVINGSTON AREA-BEARTOOTH FOOTHILLS-ABSAROKA/BEARTOOTH MOUNTAINS-
CRAZY MOUNTAINS-NORTHEAST BIG HORN MOUNTAINS-SHERIDAN FOOTHILLS-
342 AM MDT MON MAY 20 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL
MONTANA...SOUTH CENTRAL MONTANA...SOUTHEAST MONTANA AND NORTH
CENTRAL WYOMING.

.DAY ONE...TODAY AND TONIGHT

RAINFALL WILL CONTINUE ACROSS MUCH OF THE AREA TODAY. LOCALLY
HEAVY AMOUNTS ARE POSSIBLE. FLASH FLOODING AND DEBRIS FLOWS ARE
THUS POSSIBLE IN AND AROUND THE AREAS BURNED BY WILDFIRES LAST
YEAR. IN ADDITION...SMALLER CREEKS AND STREAMS ACROSS THE AREA
WILL LIKELY EXPERIENCE SOME RISES DUE TO THE RECENT RAIN.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

$$

CJS

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GLASGOW MT
325 AM MDT MON MAY 20 2013

MTZ016-021-210930-
CENTRAL AND SOUTHEAST PHILLIPS-PETROLEUM-
325 AM MDT MON MAY 20 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHEAST
MONTANA.

.DAY ONE...TODAY AND TONIGHT

A LOW PRESSURE SYSTEM OVER THE DAKOTAS WILL LEAD TO STRONG
NORTHERLY WINDS FROM 20 TO 30 MPH WITH GUSTS EXCEEDING 35 MPH. A
LAKE WIND ADVISORY GOES INTO EFFECT FROM NOON UNTIL 9PM.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

$$