A spotter reported a wind gust to 76 mph with debris all over yard after a brief convective shower. A grain auger was also blown over.
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The episode as NWS GGW wrote it up.
A spotter reported a wind gust to 76 mph with debris all over yard after a brief convective shower. A grain auger was also blown over.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Glasgow, MT wrote its last area forecast discussion before the first event at May 9, 1:17 PM MST, 5 hours 3 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GLASGOW MT 217 PM MDT SUN MAY 9 2004 .SHORT TERM... COLD FRONT SLOWLY SAGGING INTO THE CWA FROM CANADA. HAS GONE THRU THE NORTHERN FRINGE OF THE CWA THUS FAR WHERE WIND HAS COME AROUND TO THE NORTHWEST AND TEMPERATURES HAVE STARTED TO FALL. STILL EXPECTING IT CLEAR THE CWA TO THE SOUTH BY MID-EVENING OR SO. A FEW STRAY SHOWERS MEANDERING ACROSS THE NORTH...BUT NOTHING EVEN REMOTELY EXCITING. BEST UPPER SUPPORT TO REMAIN IN CANADA...WILL THUS KEEP SOME 20 POPS ACROSS THE NORTH THIS EVENING. WIND HAS HOWLED ALL DAY...AND WILL CONTINUE INTO THE EARLY EVENING BEFORE DIMINISHING. FOR NOW THE LAKE WIND ADVISORY SET TO EXPIRE AT 6 PM. WILL LET EVENING SHIFT DECIDE IF EXTENSION NECESSARY. RED FLAG WARNING FOR THE TWO SOUTHERN FIRE WEATHER ZONES DUE TO EXPIRE AT 8 PM...BUT WILL STICK A FORK IN IT WITH THIS PACKAGE ISSUANCE AS TEMPERATURES HAVE ABOUT PEAKED WITH FRONT NEARING AND CLOUDS OVERHEAD...AND RELATIVE HUMIDITIES STILL HAVE ONLY MANAGED TO DROP INTO THE MID TO UPPER 20S EVEN WITH THE STRONG DOWNSLOPE WIND. SURFACE HIGH MOVES IN TONIGHT WITH COLD AIR ADVECTION KEEPING WIND UP A BIT...BUT STILL SHOULD FALL ENUF TO ALLOW IT TO GET DECENTLY COLD UNDER A PARTLY CLOUDY SKY. WEAK UPPER RIDGE FOR MONDAY WITH SURFACE HIGH SLIPPING INTO THE DAKOTAS...MAKING FOR EAST TO SOUTHEAST SURFACE WIND WITH SPEEDS MAINLY IN THE TEENS. THINGS START TO GET VERY INTERESTING VERY QUICKLY TOMORROW EVENING AS STRONG SHORTWAVE MOVING INTO THE GREAT BASIN INDUCES SURFACE CYCLOGENESIS OVER THE CENTRAL ROCKIES BY EARLY EVENING. THIS LOW DEEPENS AND MOVES RAPIDLY NORTHEAST INTO SOUTHEAST MONTANA BY TUESDAY MORNING. IN THE PROCESS IT PUSHES A WARM FRONT THRU THE AREA BRINGING PRECIPITATION IN THE FORM OF RAIN...AND STRONG GRADIENT WIND TO THE TUNE OF 25 TO 35 MPH MONDAY NIGHT AND TUESDAY MORNING. MODELS AGREEING VERY WELL ON EVOLUTION OF THIS LOW. TUESDAY THE WARM FRONT GETS SHOVED OUT AS A COLD FRONT BY THE UPPER TROF. ALTHO WE APPEAR TO MISS THE LIONS SHARE OF THE UPPER SUPPORT...GOOD COLD AIR ADVECTION WILL BRING A VERY REAL POSSIBILITY OF SNOW TO THE AREA FOR TUESDAY NIGHT INTO WEDNESDAY. CURRENT FORECAST OF HIGH CHANCE TO LIKELY POPS BEGINNING MONDAY NIGHT LOOK GOOD AND HAVE MADE VERY LITTLE CHANGE. THUS A WETTER...MUCH COOLER...AND WINDY SITUATION SETTING UP FOR AT LEAST THE FIRST HALF OF THE UPCOMING WEEK. MORNING LOWS BEGINNING WEDNESDAY AND LASTING THRU FRIDAY TO BE ON THE BELOW NORMAL SIDE WITH FREEZING TEMPERATURES LIKELY FOR MANY AT LEAST ONE OR TWO NIGHTS...IF NOT THREE. ANY TENDER VEGETATION THAT COLD BE PROTECTED LIKELY SHOULD BE. WILL ALSO GO AHEAD AND ISSUE A LAKE WIND ADVISORY FOR TUESDAY NIGHT AND WEDNESDAY...WITH THE POSSIBILITY EVEN THAT A HIGH WIND WATCH MAY BE NEEDED FOR TUESDAY NIGHT FOR SOME PARTS OF THE CWA. WILL LET THAT FOR NEXT SHIFT TO DISCERN. .LONG TERM...TUESDAY NIGHT THROUGH SATURDAY... MODELS CONTINUE TO BE IN EXCEPTIONALLY GOOD AGREEMENT FOR TUESDAY NIGHT AND WEDNESDAY. TUESDAY NIGHT BEGINS WITH STRONG SURFACE LOW OVER THE WESTERN DAKOTAS. WRAP AROUND MOISTURE THROWN BACK WELL INTO NORTH CENTRAL MONTANA. LIKELY POPS FOR TUESDAY NIGHT ON TRACK. AS SURFACE SYSTEM BEGINS TO PULL NORTH AND EAST ON WEDNESDAY...POTENTIAL FOR PRECIPITATION OVER CWA WILL BEGIN TO DIMINISH. STRONG NORTHERLY SURFACE FLOW AND CLOUD COVER WILL KEEP TEMPERATURES AROUND 20 DEGREES COOLER THAN NORMAL. CURRENT EXTENDED PACKAGE HAS THIS WELL COVERED. UPPER LEVEL TROUGH LINGERS OVER EASTERN MONTANA INTO THURSDAY. LOWS POPS FOR THIS PERIOD LOOK GOOD AS GENERALLY UNSETTLED CONDITIONS PREVAIL. UPPER LEVEL FLOW BECOMES MORE ZONAL ON FOR THE WEEKEND. THIS SHOULD ALLOW FOR A RETURN TO NEAR NORMAL CONDITIONS. POHL && CLIMO...3 OF THE LAST 10 YEARS HAVE HAD A MEASURABLE SNOWFALL DURING THE MONTH OF MAY IN GLASGOW. IN 1999 THERE WAS A TOTAL OF 6.8 INCHES OF SNOW DURING A STORM THAT AFFECTED THE AREA ON MAY 10TH THROUGH THE 12TH. IN 2002 A STORM PRODUCED 6.3 INCHES OF SNOW ON MAY 6TH THROUGH THE 8TH. SINCE 1950 THERE HAVE BEEN 14 YEARS WITH MEASURABLE SNOWFALL...AND 34 YEARS WHERE THERE HAS BEEN A TRACE OF SNOW. THE MOST SIGNIFICANT SNOWFALL OCCURRED ON MAY 12, 1983 WHEN 10.1 INCHES OF SNOW FELL. THIS COMING WEDNESDAY IS THE 21ST ANNIVERSARY OF THE MOST SIGNIFICANT SNOWSTORM DURING THE MONTH OF MAY AT GLASGOW. THE LATEST MEASURABLE SNOW IN GLASGOW WAS ON JUNE 8, 1950 WHEN 1.3 INCHES FELL. CB && .GGW WATCHES/WARNINGS/ADVISORIES... LAKE WIND ADVISORY FOR FORT PECK LAKE UNTIL 6 PM. LAKE WIND ADVISORY FOR FORT PECK LAKE TUESDAY NIGHT AND WEDNESDAY. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GLASGOW MT 606 AM MDT SUN MAY 9 2004 MTZ016>020-059>062-101200- CENTRAL AND SOUTHEAST PHILLIPS-CENTRAL AND SOUTHERN VALLEY-DANIELS- EASTERN ROOSEVELT-NORTHERN PHILLIPS-NORTHERN VALLEY-SHERIDAN- SOUTHWEST PHILLIPS-WESTERN ROOSEVELT- 606 AM MDT SUN MAY 9 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST MONTANA .DAY ONE... NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN... A POTENTIALLY STRONG SPRING STORM TO AFFECT THE AREA TUESDAY THROUGH WEDNESDAY. RAIN WILL LIKELY OVERSPREAD THE AREA TUESDAY. AS THE STORM PULLS AWAY FROM THE AREA TUESDAY NIGHT COLDER AIR WILL BE PULLED DOWN INTO THE AREA FROM CANADA. THE RAIN WILL LIKELY CHANGE OVER TO SNOW BEFORE ENDING WEDNESDAY MORNING. ALTHOUGH IT IS STILL A FEW DAYS AWAY...AND THE EXACT TRACK OF THE STORM IS UNKNOWN...THERE IS THE POTENTIAL FOR SOME SNOW ACCUMULATION ALONG WITH STRONG NORTH WINDS TUESDAY NIGHT. TEMPERATURES TUESDAY NIGHT WILL DROP INTO THE MID-UPPER 20S...AND HIGHS WEDNESDAY ARE EXPECTED TO BE IN THE 30S AND LOWER 40S. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. MTZ021>027-101200- DAWSON-GARFIELD-MCCONE-PETROLEUM-PRAIRIE-RICHLAND-WIBAUX- 606 AM MDT SUN MAY 9 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST MONTANA .DAY ONE... A RED FLAG WARNING IS IN EFFECT FOR FIRE WEATHER ZONES 121 AND 122. SEE GTFFWFGGW OR WWUS85 KGGW FOR DETAILS. .DAYS TWO THROUGH SEVEN... A POTENTIALLY STRONG SPRING STORM TO AFFECT THE AREA TUESDAY THROUGH WEDNESDAY. RAIN WILL LIKELY OVERSPREAD THE AREA TUESDAY. AS THE STORM PULLS AWAY FROM THE AREA TUESDAY NIGHT COLDER AIR WILL BE PULLED DOWN INTO THE AREA FROM CANADA. THE RAIN WILL LIKELY CHANGE OVER TO SNOW BEFORE ENDING WEDNESDAY MORNING. ALTHOUGH IT IS STILL A FEW DAYS AWAY...AND THE EXACT TRACK OF THE STORM IS UNKNOWN...THERE IS THE POTENTIAL FOR SOME SNOW ACCUMULATION ALONG WITH STRONG NORTH WINDS TUESDAY NIGHT. TEMPERATURES TUESDAY NIGHT WILL DROP INTO THE MID-UPPER 20S...AND HIGHS WEDNESDAY ARE EXPECTED TO BE IN THE 30S AND LOWER 40S. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. TFJ
The national radar mosaic for the moment the first event began.
1 high wind. Local standard time, as filed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Montana in 2004Every state in 2004This day in weather historyWarnings in Montana, May 2004
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5393545.