4 high wind, as filed by the National Weather Service.
Every event with a place to put it; 4 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
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 2, 4:37 PM MST, 13 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GLASGOW MT 537 PM MDT TUE MAY 2 2006 .SHORT TERM...FOR NORTHEAST MONTANA...TONIGHT... QUICK UPDATE AS THE WIND IS REALLY HOWLING ACROSS MUCH OF THE CWA LATE THIS AFTERNOON. MOST AREAS ARE REPORTING SUSTAINED WIND SPEEDS OF 25 TO 40 MPH...WITH WIND GUSTS OVER 50 MPH IN SPOTS. AS MOST AREAS WILL REMAIN JUST BELOW HIGH WIND WARNING CRITERIA...AND THE WIND SHOULD START TO DIMINISH A BIT AROUND SUNSET WILL NOT ISSUE ANY HIGHLIGHTS. INCREASED BOTH THE SUSTAINED WIND SPEEDS AND GUSTS UNTIL 03Z. THE KGGW 88-D VAD WIND PROFILE SHOWING 45-50KT WINDS JUST A FEW THOUSAND FT AGL...AND SOME OF THIS STRONGER WIND IS MIXING DOWN TO THE SURFACE IN SHOWERS. THE REST OF THE FORECAST LOOKS TO BE IN GOOD SHAPE. ...PREVIOUS DISCUSSION FROM 218 PM MDT... UPPER LOW ROTATING THROUGH CENTRAL CANADA OVER THE NEXT FEW DAYS. COLD UNSTABLE NORTHWEST FLOW CONTINUES FOR SHOWERS AND GUSTY WINDS. CONDITIONS BEGIN MODERATING BY THURSDAY. COLD AIR WRAPPING AROUND UPPER LOW AS IT TRACKS ALONG THE CANADIAN BORDER THIS AFTERNOON. INSTABILITY HAS INCREASED IN THE AIRMASS WITH THE COLD AIR ADVECTION...LEADING TO NUMEROUS SHOWERS AND A FEW THUNDERSTORMS ACROSS THE REGION THIS AFTERNOON. WITH VERY LOW FREEZING LEVELS SOME OF THE STRONGER SHOWERS HAVE PRODUCED SMALL HAIL OR ICE PELLETS AND WIND GUSTS TO 50 MPH. MUCH OF THE CONVECTION WILL DIMINISH WITH SUNSET BUT WITH AIRMASS REMAINING WELL MIXED AND MODESTLY UNSTABLE EXPECT SOME RAIN OR SNOW OVERNIGHT. SIMILAR DAY ON WEDNESDAY ALTHOUGH EXPECT SHOWERS TO BE SLIGHTLY WEAKER. UPPER ENERGY AND COLD AIR ADVECTION NOT AS STRONG WITH UPPER LOW MOVING TO THE EAST. WINDS WILL REMAIN STRONG AND GUSTY ESPECIALLY NEAR ANY SHOWERS. LAKE WIND ADVISORY REMAINS IN EFFECT UNTIL WEDNESDAY EVENING. WEDNESDAY NIGHT AND THURSDAY THE SYSTEM BEGINS TO WEAKEN OVER NORTHEAST MONTANA AS UPPER FLOW BEGINS TO SPLIT. CENTRAL CANADIAN LOW MOVES OFF TOWARD THE GREAT LAKES BUT LEAVES BEHIND A PORTION THAT BEGINS TO CUT OFF AND RETROGRADE OVER WESTERN MONTANA CREATING A QUASI-REX BLOCK BY THE WEEKEND. CONVECTIVE SHOWERS STILL POSSIBLE WITH STRETCHING UPPER TROF AXIS PROVIDING SOME LIFT AND AIRMASS STILL UNSTABLE BUT HIGH PRESSURE MOVING SOUTH NOT AS FAVORABLE. HIGH PRESSURE AND TROF AXIS ALOFT WILL BOTH AID IN WEAKENING WINDS ACROSS THE REGION. EBERT .LONG TERM...THURSDAY NIGHT THROUGH TUESDAY... MODELS REMAIN IN REASONABLE AGREEMENT THROUGH THE FIRST HALF OF THE EXTENDED PERIOD...BUT SOME DIFFERENCES BEGIN TO APPEAR AROUND THE END OF THE WEEKEND. GFS AND GLOBAL BRING IN A SHORTWAVE SUNDAY NIGHT...BUT ECMWF DGEX ONLY SEEM TO HINT AT IT. LATER SHIFTS MIGHT CONSIDER ADDING POPS FOR SUNDAY NIGHT IF MODELS CONVERGE. LOWERED MAX TEMPS A BIT FOR SUNDAY IN COORDINATION WITH SURROUNDING OFFICES WITH SHORTWAVE MOVING THROUGH. BY TUESDAY...GFS AND DGEX ARE FAR APART ON UPPER FLOW OVER THE LOCAL AREA. THEREFORE SHOWERS ON TUESDAY ARE UNCERTAIN AT THIS POINT. MADE A FEW OTHER MINOR ADJUSTMENTS TO COORDINATE WITH SURROUNDING OFFICES...OTHERWISE INHERITED FORECAST IS IN GOOD SHAPE. SCT PREVIOUS DISCUSSION... MODELS ARE IN REASONABLY GOOD AGREEMENT. THE EXTENDED PERIOD STARTS OFF COLD WITH CANADIAN HIGH PRESSURE BRINGING CLEARING FROM THE NORTH THURSDAY. WITH THICKNESSES BELOW 540 DM AND 850 MB TEMPS BELOW 0C IN OUR NORTH...LOWS TO FALL INTO THE 20S...BUT NOT UNUSUAL FOR EARLY MAY. RAPID WARMING FOR FRIDAY AND SATURDAY AS A SHORTWAVE UPPER RIDGE MOVES THRU FROM THE WEST. GFS THICKNESSES CLIMB TO 560 DM WITH HIGHS RETURNING TO THE 70S FOR SATURDAY. THIS ABOVE NORMA TEMPS TO BE SHORTLIVED THOUGH. AFTER SATURDAY...A STRENGTHENING WESTERLY JET STREAM DEVELOPS AND TENDS TO SINK TO OUR SOUTH WITH A PERIOD OF LOWERING 500 MB HEIGHTS FOR TEMPS ON THE COOLER SIDE. FAST WESTERLY DOWNSLOPE FLOW WILL OVERCOME THIS IN PART...BUT ALSO LEAD TO MORE WIND POTENTIAL DURING AFTERNOONS. THE LEADING SHORTWAVE AND COOL FRONT ARRIVE SATURDAY NIGHT AND SUNDAY. SLIGHT CHANCE OF SHOWERS WITH IT ALONG WITH COOLER WEATHER TO FOLLOW. GFS HAS BEEN SHOWING THIS FRONT TO STALL TO OUR SOUTH WITH THE POSSIBILITY OF A SURFACE WAVE FORMING ALONG IT AND MOVING INTO E MT TUE. ADDED SLIGHT CHANCE POPS. SIMONSEN && .AVIATION... THE LOW PRESSURE SYSTEM WILL MOVE SLIGHTLY EAST TONIGHT. THEREFORE A CHANCE FOR PRECIPITATION REMAINS THROUGH WEDNESDAY...MAINLY TOWARDS THE NORTHERN HALF OF THE AREA...IN THE FORM OF RAIN AND LATER TURNING TO RAIN AND SNOW. CEILINGS AND VISIBILITY WILL BE MVFR AT TIMES. STRONG NORTHWEST SURFACE WINDS OF 20-30KTS WILL DIMINISH AROUND SUNSET TO 10- 20KTS...AND THEN INCREASE AGAIN IN THE MORNING TO 20- 30KTS. SCT && .GLASGOW WATCHES/WARNINGS/ADVISORIES... LAKE WIND ADVISORY UNTIL 8 PM MDT WEDNESDAY FOR FOR FORT PECK LAKE. && WEATHER.GOV/GLASGOW
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GLASGOW MT 253 PM MDT TUE MAY 2 2006 MTZ016-017-021>023-031200- CENTRAL AND SOUTHEAST PHILLIPS-CENTRAL AND SOUTHERN VALLEY- PETROLEUM-GARFIELD-MCCONE- 253 PM MDT TUE MAY 2 2006 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHEAST MONTANA. .DAY ONE...THIS AFTERNOON AND TONIGHT A LAKE WIND ADVISORY IN EFFECT UNTIL WEDNESDAY EVENING FOR STRONG NORTHWEST WINDS. SEE GTFNPWGGW OR WWUS75 KGGW FOR DETAILS. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY THE LAKE WIND ADVISORY CONTINUES UNTIL 8 PM WEDNESDAY EVENING. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
The national radar mosaic for the moment the first event began.
4 high wind. Local standard time, as filed.
There was a period of strong wind in the wake of a cold front during the late afternoon and early evening hours. Sustained wind speeds of 30 to 40 mph were common, with wind gusts of 50 to 60 mph.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Montana in 2006Every state in 2006This day in weather historyWarnings in Montana, May 2006
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: 5506022, 5506023, 5506024, 5506025.