Flood Watch 2, NWS Missoula, MT

890 
WGUS65 KMSO 112331 CCA
FFAMSO

URGENT - IMMEDIATE BROADCAST REQUESTED
FLOOD WATCH...CORRECTED
NATIONAL WEATHER SERVICE MISSOULA MT
528 PM MDT WED MAY 11 2011

MTC053-121715-
/O.COR.KMSO.FA.A.0002.110511T2328Z-110517T0000Z/
/00000.0.SM.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LINCOLN-
528 PM MDT WED MAY 11 2011

...FLOOD WATCH IN EFFECT FOR THE YAAK RIVER UNTIL FURTHER NOTICE...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A

* FLOOD WATCH FOR THE YAAK RIVER IN LINCOLN COUNTY DUE TO SNOW
  MELT.

* UNTIL FURTHER NOTICE

* FLOOD WATCH FOR THE YAAK RIVER NEAR TROY
* AT 11:45 AM WEDNESDAY THE STAGE WAS 7.1 FEET.
* MINOR FLOODING IS POSSIBLE. 
* FLOOD STAGE IS 8.0 FEET.
* FORECAST...FLOOD STAGE MAY BE REACHED BY THURSDAY AFTERNOON.

* THE FISHER RIVER NEAR LIBBY AND SMALL STREAMS THROUGHOUT LINCOLN
  COUNTY MAY ALSO REACH BANK FULL THROUGH THE NEXT FEW DAYS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLOOD WATCH MEANS THERE IS A POTENTIAL FOR FLOODING BASED ON
CURRENT FORECASTS.

YOU SHOULD MONITOR LATER FORECASTS AND BE ALERT FOR POSSIBLE
FLOOD WARNINGS. THOSE LIVING IN AREAS PRONE TO FLOODING SHOULD BE
PREPARED TO TAKE ACTION SHOULD FLOODING DEVELOP.

&&

$$

670 
WGUS65 KMSO 120959
FFAMSO

FLOOD WATCH
NATIONAL WEATHER SERVICE MISSOULA MT
359 AM MDT THU MAY 12 2011

MTC053-122100-
/O.CON.KMSO.FA.A.0002.000000T0000Z-110517T0000Z/
/00000.0.SM.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LINCOLN-
359 AM MDT THU MAY 12 2011

...FLOOD WATCH REMAINS IN EFFECT FOR THE YAAK RIVER THROUGH MONDAY
AFTERNOON...

THE FLOOD WATCH CONTINUES FOR

* THE YAAK RIVER IN LINCOLN COUNTY DUE TO SNOW MELT.

* UNTIL FURTHER NOTICE.

* FLOOD WATCH FOR THE YAAK RIVER NEAR TROY
* AT 2:45 AM THURSDAY THE STAGE WAS 7.4 FEET.
* MINOR FLOODING IS POSSIBLE.
* FLOOD STAGE IS 8.0 FEET. 
* FORECAST...FLOOD STAGE MAY BE REACHED BY LATE THIS AFTERNOON.

* THE FISHER RIVER NEAR LIBBY AND SMALL STREAMS THROUGHOUT LINCOLN
  COUNTY MAY ALSO REACH BANK FULL THROUGH THE NEXT FEW DAYS.

&&

$$

283 
WGUS65 KMSO 121700
FFAMSO

FLOOD WATCH
NATIONAL WEATHER SERVICE MISSOULA MT
1100 AM MDT THU MAY 12 2011

MTC053-121800-
/O.CAN.KMSO.FA.A.0002.000000T0000Z-110517T0000Z/
/00000.0.SM.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LINCOLN-
1100 AM MDT THU MAY 12 2011

...FLOOD WATCH IS CANCELLED...

THE FLOOD WATCH FOR A PORTION OF NORTHWEST MONTANA HAS BEEN
CANCELLED DUE TO BEING UPGRADED TO A RIVER FLOOD WARNING. 

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MISSOULA MT
338 AM MDT WED MAY 11 2011

...ABOVE AVERAGE TEMPERATURES AND INCREASED SNOW PACK RUNOFF WILL CAUSE
SMALL STREAM AND RIVER RISES THROUGH THIS WEEKEND...

.DISCUSSION...WARM TEMPERATURES AND PLEASANT CONDITIONS WILL
EXIST ONCE AGAIN TODAY ACROSS THE BREADTH OF THE NORTHERN ROCKIES
THANKS TO A STRONG AREA OF HIGH PRESSURE CURRENTLY OVER THE
REGION. DAYTIME HIGH TEMPERATURES WILL RANGE FROM THE UPPER 60S
(SOUTHWEST MONTANA) INTO THE MID TO UPPER 70S (THE REMAINDER OF
WESTERN MONTANA AND CENTRAL IDAHO) TODAY AND ALSO INTO THURSDAY.
THERE WILL BE MINOR FLUCTUATIONS IN THIS GENERAL WARMER AND DRIER
PATTERN WITH THE INTRODUCTION OF MORE UNSTABLE CONDITIONS BY
THURSDAY AFTERNOON AND AGAIN ON FRIDAY AFTERNOON. SO WHILE THE
GENERAL THEME OF THE NEXT COUPLE OF DAYS WILL BE THE CONTINUATION
OF WARM TEMPERATURES...THE LIKELIHOOD OF AFTERNOON CUMULUS
DEVELOPMENT AND THE POTENTIAL FOR CONVECTIVE SHOWERS WILL EXIST.
THAT BEING SAID...CONDITIONS TODAY THROUGH FRIDAY WILL BE A MUCH-
WELCOMED IMPROVEMENT OVER RECENT SPRING CONDITIONS. THE MAIN
IMPACT OF THE RECENT WARMTH WILL BE INCREASED SNOWMELT RUNOFF AND
ITS EFFECTS ON AREA RIVERS AND STREAMS. FOR MORE INFORMATION
PLEASE SEE THE HYDROLOGY SECTION BELOW.

SATURDAY AND SUNDAY WILL SEE A COOL DOWN TO SLIGHTLY ABOVE NORMAL
TEMPERATURES. WITH THE LARGE LOW PRESSURE SYSTEM SITTING OFF THE
NORTHWEST PACIFIC COAST THE UPPER LEVEL FLOW WILL REMAIN FROM THE
SOUTHWEST TO SOUTH...KEEPING THE ATMOSPHERE UNSTABLE ENOUGH THAT
WITH AFTERNOON HEATING SOME SHOWERS OR THUNDERSTORMS ARE POSSIBLE
ESPECIALLY ACROSS NORTH CENTRAL IDAHO AND SOUTHWEST MONTANA. THE
UPPER LEVEL LOW IS BROUGHT OVER WESTERN MONTANA EARLY NEXT WEEK
WHICH WILL PRODUCE UNSETTLED WEATHER AND SLIGHTLY COOLER
TEMPERATURES.

&&

.AVIATION...HIGH PRESSURE AND STABLE CONDITIONS WILL EXIST DURING
THE NEXT 24 HOURS.

&&

.HYDROLOGY...AS HIGH PRESSURE CONTINUES TO KEEP WARMER
TEMPERATURES PRESENT ACROSS THE NORTHERN ROCKIES...THE THREAT FOR
INCREASES IN STREAM AND RIVER FLOWS WILL REMAIN PRESENT THROUGH
THIS WEEKEND. A PROLONGED PERIOD OF ABOVE NORMAL DAYTIME
TEMPERATURES COMBINED WITH ABOVE-FREEZING OVERNIGHT TEMPERATURES
WILL PROMOTE ENHANCED SNOWMELT.

THE AREAS OF HEIGHTENED CONCERN AS WE ENTER THE WEEKEND CONTINUE
TO BE THE KOOTENAI RIVER BASIN AND THE FLATHEAD RIVER BASIN.
SPECIFICALLY THE YAAK RIVER COULD BECOME PROBLEMATIC IN THE NEAR
FUTURE. RIVER GAUGE READINGS NEAR TROY CONTINUE TO RISE RATHER
DRAMATICALLY AND COULD COME WITHIN FLOOD STAGE BY THIS WEEKEND.

WHILE CONCERNS EXIST FOR THESE SPECIFIC LOCATIONS...WATERS ACROSS
THE ENTIRE NORTHERN ROCKIES WILL BE RUNNING HIGH AND FAST DURING
THIS PERIOD. PLEASE CONTINUE TO MONITOR THE FORECAST AS FURTHER
HYDROLOGIC HEADLINES MAY BE ISSUED.

&&

.MSO WATCHES/WARNINGS/ADVISORIES...
MT...NONE.
ID...NONE.
&&

SHORT TERM/HYDROLOGY/AVIATION...ALLEGRETTO
LONG TERM....KOLATA