Severe Thunderstorm Warning 72, NWS Glasgow, MT

217 
WWUS55 KGGW 242117
SVSGGW

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GLASGOW MT
317 PM MDT TUE JUL 24 2012

MTC021-083-109-242127-
/O.CAN.KGGW.SV.W.0072.000000T0000Z-120724T2130Z/
DAWSON-RICHLAND-WIBAUX-
317 PM MDT TUE JUL 24 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN WIBAUX...SOUTHERN
RICHLAND AND EASTERN DAWSON COUNTIES IS CANCELLED...

AT 313 PM MDT...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE 
THUNDERSTORMS WHICH PROMPTED THE WARNING HAVE WEAKENED AND NO LONGER 
POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY. THEREFORE...THE SEVERE 
THUNDERSTORM WARNING HAS BEEN CANCELLED.

LAT...LON 4758 10420 4724 10422 4719 10463 4737 10468
TIME...MOT...LOC 2117Z 240DEG 20KT 4738 10435

$$

GAH
WEATHER.GOV/GLASGOW

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GLASGOW MT
227 PM MDT TUE JUL 24 2012

.SHORT TERM...FOR NORTHEAST MONTANA...TONIGHT THROUGH THURSDAY...
THE SHORT TERM PERIOD WILL BE DOMINATED BY AN UPPER LOW...CURRENTLY
OVER SOUTHERN ALBERTA...THAT WILL MAKE ITS WAY EASTWARD ACROSS THE
SOUTHERN PRAIRIE PROVINCES THROUGH WEDNESDAY NIGHT.

A SURFACE COLD FRONT IS CURRENTLY MAKING ITS WAY EASTWARD ACROSS
NORTHEAST MONTANA. SHOWERS AND THUNDERSTORMS HAVE DEVELOPED ALONG
THIS BOUNDARY...BUT SHOULD LARGELY BE OUT OF THE AREA BY THE EARLY
EVENING. SURFACE HIGH PRESSURE WILL BUILD IN BEHIND THE FRONT
OVERNIGHT...BRINGING LIGHT WINDS AND CLEARING SKIES.

WEDNESDAY WILL BRING COOLER THEN NORMAL TEMPS AS THE DOMINANT FOUR
CORNERS RIDGE IS PUSHED DOWN BY THE AFOREMENTIONED UPPER LOW TO
THE NORTH. SCATTERED SHOWERS WILL FORM OVER SASKATCHEWAN BY THE
AFTERNOON...BUT SHOULD STAY NORTH OF THE BORDER. WITH THAT SAID...SOME
CLOUD COVER WILL MAKE ITS WAY SOUTHWARD INTO THE FAR NORTHERN
ZONES. GUSTY NORTHWEST WINDS WILL DEVELOP AT 15 TO 25 MPH...WITH
SOME HIGHER GUSTS POSSIBLE. WENT AHEAD AND ISSUED A LAKE WIND
ADVISORY FOR FORT PECK LAKE.

WEDNESDAY NIGHT CLOUD COVER WILL CONTINUE ACROSS THE FAR NORTH
THANKS TO THE NOW EXITING UPPER LOW. COOL HIGH PRESSURE AT THE
SURFACE WILL BUILD IN BEHIND THE EXITING SYSTEM...ALLOWING WINDS
TO DIE OFF BY MID EVENING.

THURSDAY THE COOL HIGH PRESSURE WILL REMAIN IN PLACE...MAKING FOR
ANOTHER DAY OF BELOW NORMAL TEMPS. THE UPPER RIDGE WILL REBOUND
OVERHEAD. SOME ISOLATED SHOWERS AND THUNDERSTORMS COULD DEVELOP
ACROSS THE NORTHERN ZONES AS SOME LINGERING CYCLONIC FLOW INTERACTS
WITH THE BUILDING UPPER RIDGE. GILCHRIST

.LONG TERM...THURSDAY NIGHT THROUGH TUESDAY...

LONG TERM BEGINS DRY THURSDAY NIGHT BUT RAPIDLY RETURNS TO SUB
CLIMO POPS FOR MOST AFTERNOONS AS A HEAT RIDGE WITH WEAK
SOUTHWEST FLOW BEGINS TO SET UP FRIDAY AFTERNOON ONWARD. A SUBTLE
LEES SURFACE TROUGH WILL BE THE FOCUS FOR DEVELOPMENT EACH
AFTERNOON. TEMPERATURES SHOULD ALSO RISE TO ABOVE NORMAL THROUGH
THE LONG TERM AS WELL. GAH

PREVIOUS LONG TERM DISCUSSION...
THE EXTENDED BEGINS THURSDAY NIGHT WITH A RIDGE OVERHEAD WHICH
QUICKLY MOVES EAST ON FRIDAY TO RE-INTRODUCE SOUTHWEST FLOW FOR
NORTHEAST MONTANA ALOFT AND LEE SIDE TROUGHING WILL BRING THE
MOISTURE LOW LEVEL SOUTHEAST FLOW INTO THE AREA. THIS CYCLE IS
FORECAST TO REPEAT ITSELF OVER AND OVER THROUGH THE EXTENDED
FORECAST. THE GFS AND EC PLAY OUT THE SAME GENERAL PATTERN WITH
SOME TIMING DIFFERENCES. OVERALL KEPT THE ABOVE NORMAL
TEMPERATURES GOING THROUGH THE PERIOD... AND SLIGHT CHANCE POPS.
NOT EVERY DAY WILL SEE CONVECTIVE ACTIVITY... HOWEVER SINCE THE
STORMS WILL BE DRIVEN BY SHORTWAVES... WHICH ARE HARD TO TIME
OUT... FOR EXACT PASSAGE IN THE EXTENDED MODELS. THE BEST PLAY WAS
TO STAY WITH SLIGHT CHANCE UNTIL THE EVENT MOVES INTO THE NEAR
TERM FORECAST FOR NOW. PROTON

&&

.AVIATION...
VFR.

LATE AFTERNOON SHOWERS AND T-STORMS COULD IMPACT KSDY AND
KGDV CAUSING BRIEF MVFR AND IFR VISIBILITIES OR CEILINGS BUT
SHOULD EXIT BY MIDNIGHT.

WINDS WILL BE OUT OF THE WEST AROUND 5 TO 10 KTS OVERNIGHT
INCREASING TO 10 TO 20 KTS AND VEERING SLIGHTLY TO THE WEST
TOMORROW. GAH

&&

.GLASGOW WATCHES/WARNINGS/ADVISORIES...
LAKE WIND ADVISORY FROM 10 AM TO 9 PM MDT WEDNESDAY FOR FORT PECK
LAKE.

&&

WEATHER.GOV/GLASGOW

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GLASGOW MT
324 AM MDT TUE JUL 24 2012

MTZ019-024-025-027-062-250930-
SHERIDAN-RICHLAND-DAWSON-WIBAUX-EASTERN ROOSEVELT-
324 AM MDT TUE JUL 24 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHEAST
MONTANA.

.DAY ONE...TODAY AND TONIGHT

STRONG TO SEVERE THUNDERSTORMS ARE EXPECTED TO DEVELOP AND MOVE
ACROSS THE AREA THIS AFTERNOON AND EVENING. SOME OF THESE STORMS
COULD PRODUCE HEAVY RAINS...POSSIBLE LARGE HAIL...STRONG
WINDS AND FREQUENT LIGHTNING.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

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.

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GLASGOW MT
115 PM MDT TUE JUL 24 2012

MTZ024-025-062-242015-
DAWSON-RICHLAND-ROOSEVELT-
115 PM MDT TUE JUL 24 2012

THE NATIONAL WEATHER SERVICE IN GLASGOW HAS ISSUED A

SIGNIFICANT WEATHER ADVISORY FOR...
  CENTRAL ROOSEVELT COUNTY IN NORTHEAST MONTANA...
  WESTERN RICHLAND COUNTY IN NORTHEAST MONTANA...
  CENTRAL DAWSON COUNTY IN NORTHEAST MONTANA...

UNTIL 215 PM MDT.

AT 111 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 7 MILES WEST OF BLOOMFIELD...MOVING NORTHEAST AT
25 MPH.

HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN.

LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...CULBERTSON...
BLOOMFIELD...RICHEY...INTAKE...LAMBERT...BROCKTON AND FROID.

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

LAT...LON 4705 10528 4787 10523 4787 10519 4801 10520
      4808 10506 4805 10504 4808 10499 4807 10499
      4812 10498 4839 10444 4726 10446
TIME...MOT...LOC 1914Z 243DEG 20KT 4740 10503

GAH
WEATHER.GOV/GLASGOW