Alert archive / Montana / Winter Storm Warnings in 2017
Winter Storm Warning 2, NWS Glasgow, MT
NWS Glasgow, MT issued this winter storm warning at Dec 18, 2017, 2:35 PM MST for 9 counties in Montana. It took effect at Dec 19, 2017, 11:00 AM MST. It was in force for 30 hr. 20 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Dec 18, 2017, 2:35 PM MST (21:35 UTC)
- In effect from
- Dec 19, 2017, 11:00 AM MST
- Expired
- Dec 20, 2017, 4:50 PM MST
- In force
- 30 hr
- Issued by
- NWS Glasgow, MT
Counties Daniels County, MT, Garfield County, MT, McCone County, MT, Petroleum County, MT, Phillips County, MT, Richland County, MT, Roosevelt County, MT, Sheridan County, MT, Valley County, MT
The radar
The Glasgow radar (KGGW), 41 km from the middle of the area, began a volume at 21:35 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Dec 20, 7:00 AM MST | SNOW 1.5 | 13 Nnw Enid, MT | MEASURED AT BKNM8, A COOPERATIVE OBSERVER SITE 20 MILES SOUTH OF BROCKTON. THIS IS A 24 HOUR TOTAL AND SNOW IS STILL FALLING. |
| Dec 20, 9:02 AM MST | SNOW 7 | Zortman, MT | CO-OP SITE ZRTM8, SNOWFALL YESTERDAY 3 IN, SNOWFALL TODAY 4 IN, SNOW ONGOING |
| Dec 20, 9:38 AM MST | SNOW 5.2 | 1 Nnw Saco, MT | CO-OP SITE SAOM8. 24 HOUR TOTAL. SNOW DEPTH 6 IN. SNOW IS ONGOING. |
| Dec 20, 2:00 PM MST | SNOW 5 | 16 N Brockton, MT | AN ESTIMATED 4 TO 5 INCHES OF SNOW FELL. SIGNIFICANT DRIFTING MADE MEASUREMENT DIFFICULT. TIME OF EVENT BASED ON WHEN SNOW STOPPED FALLING. |
| Dec 20, 3:00 PM MST | SNOW 6.4 | Malta, MT | 6.4 INCHES OF SNOW WITH A WATER EQUIV OF 0.75 INCHES, 7 INCHES OF SNOW ON THE GROUND. SNOW ENDED AT 3PM. |
| Dec 20, 3:20 PM MST | SNOW 14 | Sse Zortman, MT | SNOW ENDED AT 2PM, DRIFTING OUTSIDE OF TOWN. |
| Dec 20, 3:26 PM MST | SNOW 6 | 13 Ene Zortman, MT | SEVERE DRIFTING WITH DRIFTS UP TO 2 FEET HIGH. SNOW ENDED BY 2PM. |
| Dec 20, 3:29 PM MST | SNOW 6 | W Dodson, MT | DRIFTING, SNOW ENDED AROUND 3PM |
| Dec 20, 3:32 PM MST | SNOW 6 | 8 N Dodson, MT | 4-6 INCHES WITH LOTS OF DRIFTING. SNOW ENDED AROUND NOON. |
| Dec 20, 3:38 PM MST | SNOW 10 | 30 N Dodson, MT | 8-10 INCHES WITH LOTS OF DRIFTING IN OPEN AREAS. STILL SNOWING LIGHTLY. SNOW MEASURE TAKEN IN PROTECTED AREA. |
| Dec 20, 3:43 PM MST | SNOW 4 | 17 Nne Whitewater, MT | 4 INCHES OF SNOW, LOTS OF DRIFTING, STILL SNOWING VERY LIGHTLY |
| Dec 20, 3:50 PM MST | SNOW 3 | 2 S Whitewater, MT | DRIFTING, AND VERY ICY ROADS, SNOW BEGAN AS FREEZING RAIN. SNOW ENDED AROUND NOON. |
| Dec 20, 3:57 PM MST | SNOW 5 | Nnw Saco, MT | DRIFTING, SNOW BEGAN AS LIGHT FREEZING RAIN, ROADS VERY ICY. SNOW ENDED BY 3PM. |
| Dec 20, 4:00 PM MST | SNOW 0 | 6 W Sidney, MT | STORM TOTAL SNOWFALL ESTIMATED AT 4 INCHES. REPORT FROM SOCIAL MEDIA. |
| Dec 20, 4:00 PM MST | SNOW 4 | 14 Sse Culbertson, MT | STORM TOTAL SNOWFALL ESTIMATED TO BE 3 TO 4 INCHES. |
| Dec 20, 4:00 PM MST | SNOW 4 | 6 W Sidney, MT | STORM TOTAL SNOWFALL ESTIMATED AT 4 INCHES. REPORT FROM SOCIAL MEDIA. |
| Dec 20, 4:00 PM MST | SNOW 6 | 6 Wnw Larslan, MT | 1-2 FOOT DRIFTS, FLURRIES SINCE NOON. |
| Dec 20, 5:00 PM MST | SNOW 2 | Circle, MT | SNOW BEGAN AT 6AM AND ENDED AT 2PM |
| Dec 20, 5:00 PM MST | SNOW 3 | Culbertson, MT | 24 HOUR SNOW TOTAL ENDING AT 5PM. |
| Dec 20, 5:00 PM MST | SNOW 6.6 | Glasgow, MT | 6.6 INCHES HAS FALLEN SINCE 10PM THE PRIOR EVENING. NEW DAILY SNOWFALL RECORD FOR NWS GLASGOW |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Glasgow Intl Airport, MT (KGGW), launched 12:00Z, 9.6 hours before the alert went out and 40 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 807 m above ground
- 0-6 km bulk shear
- 85 kt
- 0-1 km storm-relative helicity
- 175 m²/s²
- 0-3 km storm-relative helicity
- 170 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
829 WWUS45 KGGW 182135 WSWGGW URGENT - WINTER WEATHER MESSAGE National Weather Service Glasgow MT 235 PM MST Mon Dec 18 2017 MTZ016-060-191200- /O.UPG.KGGW.WS.A.0006.171219T1800Z-171221T0000Z/ /O.NEW.KGGW.WS.W.0002.171219T1800Z-171221T0000Z/ Central and Southeast Phillips-Southwest Phillips- Including the cities of Malta and Zortman 235 PM MST Mon Dec 18 2017 ...WINTER STORM WARNING IN EFFECT FROM 11 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow expected. Plan on difficult travel conditions. Total snow accumulations of 5 to 8 inches, with localized amounts up to 12 inches, are expected. * WHERE...Central and Southeast Phillips and Southwest Phillips Counties. * WHEN...From 11 AM Tuesday to 5 PM MST Wednesday. * ADDITIONAL DETAILS...Winds gusting as high as 30 mph will cause patchy blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions are expected. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ MTZ059-191200- /O.UPG.KGGW.WS.A.0006.171219T1800Z-171221T0000Z/ /O.NEW.KGGW.WW.Y.0022.171219T1800Z-171221T0000Z/ Northern Phillips- Including the city of Whitewater 235 PM MST Mon Dec 18 2017 ...WINTER WEATHER ADVISORY IN EFFECT FROM 11 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Snow expected. Plan on difficult travel conditions. Total snow accumulations of 5 to 7 inches are expected. * WHERE...Northern Phillips County. * WHEN...From 11 AM Tuesday to 5 PM MST Wednesday. * ADDITIONAL DETAILS...Winds gusting as high as 30 mph will cause patchy blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ MTZ017>020-061-062-191200- /O.UPG.KGGW.WS.A.0006.171220T0000Z-171221T0000Z/ /O.NEW.KGGW.WW.Y.0022.171220T0000Z-171221T0000Z/ Central and Southern Valley-Daniels-Sheridan-Western Roosevelt- Northern Valley-Eastern Roosevelt- Including the cities of Glasgow, Fort Peck, Hinsdale, Frazer, Scobey, Plentywood, Medicine Lake, Wolf Point, Poplar, Opheim, and Culbertson 235 PM MST Mon Dec 18 2017 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Snow expected. Plan on difficult travel conditions. Total snow accumulations of 4 to 6 inches are expected. * WHERE...Portions of northeast Montana. * WHEN...From 5 PM Tuesday to 5 PM MST Wednesday. * ADDITIONAL DETAILS...Winds gusting as high as 30 mph will cause patchy blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ MTZ021-191200- /O.NEW.KGGW.WW.Y.0022.171219T1800Z-171221T0000Z/ Petroleum- Including the city of Winnett 235 PM MST Mon Dec 18 2017 ...WINTER WEATHER ADVISORY IN EFFECT FROM 11 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Snow expected. Plan on slippery road conditions. In addition, some reductions to visibility are expected. Total snow accumulations of 1 to 3 inches, with localized amounts up to 6 inches, are expected. * WHERE...Petroleum County. * WHEN...From 11 AM Tuesday to 5 PM MST Wednesday. * ADDITIONAL DETAILS...Winds gusting as high as 30 mph will cause patchy blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ MTZ022>025-191200- /O.NEW.KGGW.WW.Y.0022.171220T0000Z-171221T0000Z/ Garfield-McCone-Richland-Dawson- Including the cities of Jordan, Circle, Sidney, Fairview, Glendive, and Richey 235 PM MST Mon Dec 18 2017 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Snow expected. Plan on slippery road conditions. In addition, some reductions to visibility are expected. Total snow accumulations of 2 to 4 inches are expected. * WHERE...Garfield, McCone, Richland and Dawson Counties. * WHEN...From 5 PM Tuesday to 5 PM MST Wednesday. * ADDITIONAL DETAILS...Winds gusting as high as 30 mph will cause patchy blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$
7 follow-up statements
156 WWUS45 KGGW 190248 AAA WSWGGW URGENT - WINTER WEATHER MESSAGE...UPDATED National Weather Service Glasgow MT 748 PM MST Mon Dec 18 2017 MTZ059-191200- /O.UPG.KGGW.WW.Y.0022.171219T1800Z-171221T0000Z/ /O.EXA.KGGW.WS.W.0002.171219T1800Z-171221T0000Z/ Northern Phillips- Including the city of Whitewater 748 PM MST Mon Dec 18 2017 ...WINTER STORM WARNING IN EFFECT FROM 11 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow expected. Plan on difficult travel conditions. Total snow accumulations of 5 to 7 inches are expected. * WHERE...Northern Phillips County. * WHEN...From 11 AM Tuesday to 5 PM MST Wednesday. * ADDITIONAL DETAILS...Winds gusting as high as 30 mph will cause patchy blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions are expected. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ MTZ016-060-191200- /O.CON.KGGW.WS.W.0002.171219T1800Z-171221T0000Z/ Central and Southeast Phillips-Southwest Phillips- Including the cities of Malta and Zortman 748 PM MST Mon Dec 18 2017 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 11 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow expected. Plan on difficult travel conditions. Total snow accumulations of 5 to 8 inches, with localized amounts up to 10 inches, are expected. * WHERE...Central and Southeast Phillips and Southwest Phillips Counties. * WHEN...From 11 AM Tuesday to 5 PM MST Wednesday. * ADDITIONAL DETAILS...Winds gusting as high as 30 mph will cause patchy blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions are expected. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ MTZ021-191200- /O.CON.KGGW.WW.Y.0022.171219T1800Z-171221T0000Z/ Petroleum- Including the city of Winnett 748 PM MST Mon Dec 18 2017 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 11 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Snow expected. Plan on slippery road conditions. In addition, some reductions to visibility are expected. Total snow accumulations of 2 to 4 inches, with localized amounts up to 6 inches, are expected. * WHERE...Petroleum County. * WHEN...From 11 AM Tuesday to 5 PM MST Wednesday. * ADDITIONAL DETAILS...Winds gusting as high as 30 mph will cause patchy blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ MTZ017>020-022>025-061-062-191200- /O.CON.KGGW.WW.Y.0022.171220T0000Z-171221T0000Z/ Central and Southern Valley-Daniels-Sheridan-Western Roosevelt- Garfield-McCone-Richland-Dawson-Northern Valley-Eastern Roosevelt- Including the cities of Glasgow, Fort Peck, Hinsdale, Frazer, Scobey, Plentywood, Medicine Lake, Wolf Point, Poplar, Jordan, Circle, Sidney, Fairview, Glendive, Richey, Opheim, and Culbertson 748 PM MST Mon Dec 18 2017 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 PM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Snow expected. Plan on slippery road conditions. In addition, some reductions to visibility are expected. Total snow accumulations of 3 to 5 inches are expected. * WHERE...Portions of northeast Montana. * WHEN...From 5 PM Tuesday to 5 PM MST Wednesday. * ADDITIONAL DETAILS...Winds gusting as high as 30 mph will cause patchy blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$
287 WWUS45 KGGW 191034 WSWGGW URGENT - WINTER WEATHER MESSAGE National Weather Service Glasgow MT 334 AM MST Tue Dec 19 2017 MTZ016-059-060-200100- /O.CON.KGGW.WS.W.0002.171219T1800Z-171221T0000Z/ Central and Southeast Phillips-Northern Phillips- Southwest Phillips- Including the cities of Malta, Whitewater, and Zortman 334 AM MST Tue Dec 19 2017 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow expected. Plan on difficult travel conditions. Total snow accumulations of 5 to 8 inches, with localized amounts up to 10 inches, are expected. * WHERE...Central and Southeast Phillips, Northern Phillips and Southwest Phillips Counties. * WHEN...From 11 AM this morning to 5 PM MST Wednesday. * ADDITIONAL DETAILS...Winds gusting as high as 30 mph will cause patchy blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions are expected. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ MTZ021-200100- /O.CON.KGGW.WW.Y.0022.171219T1800Z-171221T0000Z/ Petroleum- Including the city of Winnett 334 AM MST Tue Dec 19 2017 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 5 PM MST WEDNESDAY... * WHAT...Snow expected. Plan on slippery road conditions. In addition, some reductions to visibility are expected. Total snow accumulations of 2 to 4 inches, with localized amounts up to 6 inches, are expected. * WHERE...Petroleum County. * WHEN...From 11 AM this morning to 5 PM MST Wednesday. * ADDITIONAL DETAILS...Winds gusting as high as 30 mph will cause patchy blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ MTZ017>020-022>025-061-062-200100- /O.CON.KGGW.WW.Y.0022.171220T0000Z-171221T0000Z/ Central and Southern Valley-Daniels-Sheridan-Western Roosevelt- Garfield-McCone-Richland-Dawson-Northern Valley-Eastern Roosevelt- Including the cities of Glasgow, Fort Peck, Hinsdale, Frazer, Scobey, Plentywood, Medicine Lake, Wolf Point, Poplar, Jordan, Circle, Sidney, Fairview, Glendive, Richey, Opheim, and Culbertson 334 AM MST Tue Dec 19 2017 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 PM MST WEDNESDAY... * WHAT...Snow expected. Plan on slippery road conditions. In addition, some reductions to visibility are expected. Total snow accumulations of 3 to 5 inches, with localized amounts up to 7 inches, are expected. * WHERE...Portions of northeast Montana. * WHEN...From 5 PM this afternoon to 5 PM MST Wednesday. * ADDITIONAL DETAILS...Winds gusting as high as 30 mph will cause patchy blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory means that periods of snow, sleet or freezing rain will cause travel difficulties. Be prepared for slippery roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$
377 WWUS45 KGGW 192103 WSWGGW URGENT - WINTER WEATHER MESSAGE National Weather Service Glasgow MT 203 PM MST Tue Dec 19 2017 ...SIGNIFICANT WINTER STORM MOVING THROUGH THE AREA... .Expect winter weather conditions to increase this afternoon through tonight. MTZ016-059-060-201115- /O.CON.KGGW.WS.W.0002.000000T0000Z-171221T0000Z/ Central and Southeast Phillips-Northern Phillips- Southwest Phillips- Including the cities of Malta, Whitewater, and Zortman 203 PM MST Tue Dec 19 2017 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST WEDNESDAY... * WHAT...Snow and blowing snow, heavy at times. Plan on difficult travel conditions. Additional snow accumulations of 6 to 9 inches, with localized amounts up to 11 inches, are expected. * WHERE...Central and Southeast Phillips, Northern Phillips and Southwest Phillips Counties. * WHEN...Until 5 PM MST Wednesday. * ADDITIONAL DETAILS...Winds gusting as high as 30 mph will cause patchy blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions are occurring. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ MTZ021-201115- /O.CON.KGGW.WW.Y.0022.000000T0000Z-171221T0000Z/ Petroleum- Including the city of Winnett 203 PM MST Tue Dec 19 2017 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST WEDNESDAY... * WHAT...Snow occurring. Plan on slippery road conditions. In addition, some reductions to visibility are expected. Additional snow accumulations of 3 to 5 inches are expected. * WHERE...Petroleum County. * WHEN...Until 5 PM MST Wednesday. * ADDITIONAL DETAILS...Winds gusting as high as 35 mph will cause patchy blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ MTZ017>020-022>025-061-062-201115- /O.CON.KGGW.WW.Y.0022.171220T0000Z-171221T0000Z/ Central and Southern Valley-Daniels-Sheridan-Western Roosevelt- Garfield-McCone-Richland-Dawson-Northern Valley-Eastern Roosevelt- Including the cities of Glasgow, Fort Peck, Hinsdale, Frazer, Scobey, Plentywood, Medicine Lake, Wolf Point, Poplar, Jordan, Circle, Sidney, Fairview, Glendive, Richey, Opheim, and Culbertson 203 PM MST Tue Dec 19 2017 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 PM MST WEDNESDAY... * WHAT...Snow and blowing snow expected. Plan on difficult travel conditions. Total snow accumulations of 4 to 6 inches, with localized amounts up to 8 inches, are expected. * WHERE...Portions of northeast Montana. * WHEN...From 5 PM this afternoon to 5 PM MST Wednesday. * ADDITIONAL DETAILS...Winds gusting as high as 30 mph will cause patchy blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$
307 WWUS45 KGGW 200341 AAA WSWGGW URGENT - WINTER WEATHER MESSAGE...UPDATED National Weather Service Glasgow MT 841 PM MST Tue Dec 19 2017 ...SIGNIFICANT WINTER STORM MOVING THROUGH THE AREA... .Expect high impact winter weather conditions to continue through Wednesday. MTZ017>024-061-062-201200- /O.UPG.KGGW.WW.Y.0022.000000T0000Z-171221T0000Z/ /O.EXA.KGGW.WS.W.0002.000000T0000Z-171221T0000Z/ Central and Southern Valley-Daniels-Sheridan-Western Roosevelt- Petroleum-Garfield-McCone-Richland-Northern Valley- Eastern Roosevelt- Including the cities of Glasgow, Fort Peck, Hinsdale, Frazer, Scobey, Plentywood, Medicine Lake, Wolf Point, Poplar, Winnett, Jordan, Circle, Sidney, Fairview, Opheim, and Culbertson 841 PM MST Tue Dec 19 2017 ...WINTER STORM WARNING IN EFFECT UNTIL 5 PM MST WEDNESDAY... * WHAT...Heavy snow occurring. Plan on difficult travel conditions. Additional snow accumulations of 4 to 7 inches, with localized amounts up to 11 inches, are expected. * WHERE...Portions of northeast Montana. * WHEN...Until 5 PM MST Wednesday. * ADDITIONAL DETAILS...Winds gusting as high as 30 mph will cause areas of blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions are occurring. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ MTZ016-059-060-201200- /O.CON.KGGW.WS.W.0002.000000T0000Z-171221T0000Z/ Central and Southeast Phillips-Northern Phillips- Southwest Phillips- Including the cities of Malta, Saco, Whitewater, and Zortman 841 PM MST Tue Dec 19 2017 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST WEDNESDAY... * WHAT...Heavy snow occurring. Plan on difficult travel conditions. Additional snow accumulations of 6 to 9 inches, with localized amounts up to 11 inches, are expected. * WHERE...Central and Southeast Phillips, Northern Phillips and Southwest Phillips Counties. * WHEN...Until 5 PM MST Wednesday. * ADDITIONAL DETAILS...Winds gusting as high as 30 mph will cause areas of blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions are occurring. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ MTZ026-027-201200- /O.EXA.KGGW.WW.Y.0022.000000T0000Z-171221T0000Z/ Prairie-Wibaux- Including the cities of Terry and Wibaux 841 PM MST Tue Dec 19 2017 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 5 PM MST WEDNESDAY... * WHAT...Snow occurring. Plan on slippery road conditions. In addition, some reductions to visibility are expected. Additional snow accumulations of 1 to 3 inches are expected. * WHERE...Prairie and Wibaux Counties. * WHEN...Until 5 PM MST Wednesday. * ADDITIONAL DETAILS...Winds gusting as high as 30 mph will cause patchy blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ MTZ025-201200- /O.CON.KGGW.WW.Y.0022.000000T0000Z-171221T0000Z/ Dawson- Including the cities of Glendive and Richey 841 PM MST Tue Dec 19 2017 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST WEDNESDAY... * WHAT...Snow occurring. Plan on slippery road conditions. In addition, some reductions to visibility are expected. Additional snow accumulations of 2 to 4 inches are expected. * WHERE...Dawson County. * WHEN...Until 5 PM MST Wednesday. * ADDITIONAL DETAILS...Winds gusting as high as 30 mph will cause patchy blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$
570 WWUS45 KGGW 201002 WSWGGW URGENT - WINTER WEATHER MESSAGE National Weather Service Glasgow MT 302 AM MST Wed Dec 20 2017 ...SIGNIFICANT WINTER STORM MOVING THROUGH THE AREA... MTZ016>024-059>062-210000- /O.CON.KGGW.WS.W.0002.000000T0000Z-171221T0000Z/ Central and Southeast Phillips-Central and Southern Valley- Daniels-Sheridan-Western Roosevelt-Petroleum-Garfield-McCone- Richland-Northern Phillips-Southwest Phillips-Northern Valley- Eastern Roosevelt- Including the cities of Malta, Saco, Glasgow, Fort Peck, Hinsdale, Frazer, Scobey, Plentywood, Medicine Lake, Wolf Point, Poplar, Winnett, Jordan, Circle, Sidney, Fairview, Whitewater, Zortman, Opheim, and Culbertson 302 AM MST Wed Dec 20 2017 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Heavy snow occurring. Plan on difficult travel conditions. Additional snow accumulations of 3 to 6 inches, with localized amounts up to 9 inches, are expected. * WHERE...Most of northeast Montana. * WHEN...Until 5 PM MST this afternoon. * ADDITIONAL DETAILS...Winds gusting as high as 30 mph will cause areas of blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions are occurring. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ MTZ025>027-210000- /O.CON.KGGW.WW.Y.0022.000000T0000Z-171221T0000Z/ Dawson-Prairie-Wibaux- Including the cities of Glendive, Richey, Terry, and Wibaux 302 AM MST Wed Dec 20 2017 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Snow occurring. Plan on slippery road conditions. In addition, some reductions to visibility are expected. Additional snow accumulations of 1 to 3 inches are expected. * WHERE...Dawson, Prairie and Wibaux Counties. * WHEN...Until 5 PM MST this afternoon. * ADDITIONAL DETAILS...Winds gusting as high as 30 mph will cause patchy blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$
521 WWUS45 KGGW 202123 WSWGGW URGENT - WINTER WEATHER MESSAGE National Weather Service Glasgow MT 223 PM MST Wed Dec 20 2017 ...WINTER STORM DIMINISHING TONIGHT... MTZ016-059-060-202230- /O.CAN.KGGW.WS.W.0002.000000T0000Z-171221T0000Z/ Central and Southeast Phillips-Northern Phillips- Southwest Phillips- 223 PM MST Wed Dec 20 2017 ...WINTER STORM WARNING IS CANCELLED... With visibility increasing and cloud bases rising, snowfall has diminished and no longer poses an immediate threat this afternoon. Lingering gusty winds may still blow the ground snow into drifts. $$ MTZ017>024-061-062-210000- /O.CON.KGGW.WS.W.0002.000000T0000Z-171221T0000Z/ Central and Southern Valley-Daniels-Sheridan-Western Roosevelt- Petroleum-Garfield-McCone-Richland-Northern Valley- Eastern Roosevelt- Including the cities of Glasgow, Fort Peck, Hinsdale, Frazer, Scobey, Plentywood, Medicine Lake, Wolf Point, Poplar, Winnett, Jordan, Circle, Sidney, Fairview, Opheim, and Culbertson 223 PM MST Wed Dec 20 2017 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Snow and blowing snow. Plan on difficult travel conditions. Additional snow accumulations of up to one inch are expected. * WHERE...Portions of northeast Montana. * WHEN...Until 5 PM MST this afternoon. * ADDITIONAL DETAILS...Winds gusting up to 30 mph will cause patchy blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions are occurring. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ MTZ025>027-210000- /O.CON.KGGW.WW.Y.0022.000000T0000Z-171221T0000Z/ Dawson-Prairie-Wibaux- Including the cities of Glendive, Richey, Terry, and Wibaux 223 PM MST Wed Dec 20 2017 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Snow and blowing snow. Plan on slippery road conditions. In addition, some reductions to visibility are expected. Additional snow accumulations of up to two inches are expected. * WHERE...Dawson, Prairie and Wibaux Counties. * WHEN...Until 5 PM MST this afternoon. * ADDITIONAL DETAILS...Winds gusting as high as 30 mph will cause patchy blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$
162 WWUS45 KGGW 202350 WSWGGW URGENT - WINTER WEATHER MESSAGE National Weather Service Glasgow MT 450 PM MST Wed Dec 20 2017 ...WINTER STORM DIMINISHING TONIGHT... MTZ017>024-061-062-210100- /O.CAN.KGGW.WS.W.0002.000000T0000Z-171221T0000Z/ Central and Southern Valley-Daniels-Sheridan-Western Roosevelt- Petroleum-Garfield-McCone-Richland-Northern Valley- Eastern Roosevelt- 450 PM MST Wed Dec 20 2017 ...WINTER STORM WARNING IS CANCELLED... Light snow will end quickly across the region. Expect low drifting snow to continue into the overnight hours impacting travel on local roadways. $$ MTZ025>027-210300- /O.EXT.KGGW.WW.Y.0022.000000T0000Z-171221T0300Z/ Dawson-Prairie-Wibaux- Including the cities of Glendive, Richey, Terry, and Wibaux 450 PM MST Wed Dec 20 2017 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 8 PM MST THIS EVENING... * WHAT...Snow occurring. Plan on slippery road conditions. In addition, some reductions to visibility are expected. Additional snow accumulations of 1 to 3 inches are expected. * WHERE...Dawson, Prairie and Wibaux Counties. * WHEN...Until 8 PM MST this evening. * ADDITIONAL DETAILS...Winds gusting as high as 30 mph will cause patchy blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$
What forecasters said that day
The local office's own words before this winter storm warning went out, 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 this winter storm warning went out at Dec 18, 9:04 AM MST, 5 hours 31 minutes earlier.
Area forecast discussion, Dec 18, 9:04 AM MST, 5 hours 31 minutes before
Area Forecast Discussion National Weather Service Glasgow MT 904 AM MST Mon Dec 18 2017 .DISCUSSION... Morning Update (9am MST): No significant changes to the forecast for the morning package. Minor tweaks to temperature and wind grids comprised the main areas of updating this morning. Bigelbach PREVIOUS DISCUSSION: A shift in the overall pattern is expected to lead to accumulating snow by midweek, followed by much colder temperatures. A split upper trof is currently moving across the western CONUS, with the northern portion heading across the northern Plains states toward the Great Lakes, and the southern portion in the form of a nearly entirely cutoff low over the Sonoran desert region of the US and Mexico. A surface boundary has set up over northern Montana, bringing cloudy skies and a mixture of rain and snow showers this morning. These will continue off and on throughout the day as this trof slowly moves south and east through the region, and some locations across far northeast Montana may see between half an inch to an inch of snow. Just behind this, a low pressure system will push into the area from the northwest, allowing cold air to push into Montana from the north. This system will bring snow to the region beginning as early as Tuesday afternoon, which will persist into Thursday morning. Currently, the highest snowfall amounts are anticipated to be across the higher terrain of the Little Rockies. Areas of northeast Montana north of the Missouri River should also see higher snowfall amounts due to the surface boundary expected to set up as cold air tries to push down from the north side of this storm. Current forecast snow amounts look to be 5 to 8 inches over the Little Rockies, and 3 to 5 inches over the rest of the area north of the Missouri, with generally 2 inches or less south. As these totals are anticipated from Tuesday morning through Wednesday afternoon, a Winter Storm Watch has been issued for this time period. Winds may also be somewhat breezy as this front passes through, and we will keep an eye on that as the storm approaches to determine how significant impacts from that will be. Cold air will drop significantly as the system clears out from the area, and with fresh snow cover, temperatures will drop to near or below zero Wednesday night. Cold northwest flow will keep temperatures cold, and there is increasing model consensus regarding the probability of an upper level low diving down in the Great Basin region from the Pacific Northwest on Thursday. So have a chance of snow south of the Missouri for Thursday night into Friday as this system passes, although current thinking is that the precipitation will remain to our south and over the Rockies with this storm. Beyond this, model guidance diverges, although at this time it looks like northeast Montana will remain cold under a generally unstable northwest flow regime through Christmas. Hickford && .AVIATION... LLWS: Low level winds shear will be possible in the morning 12-18Z. FLIGHT CAT: VFR-MVFR SYNOPSIS: A disturbance will push through the region, bringing a dense cloud deck with lowering ceilings throughout the day. Ceilings may dip into MVFR levels periodically today, mainly with mixed precipitation or as rain transitions to snow. A rain and snow mix is possible at all sites through the day, transitioning to snow by mid afternoon. WIND: Expect winds to continue to veer towards the west-northwest through morning, and increase in speed to 10-20 kts at all sites with some gusts to 25-30 kts at SDY and GDV this afternoon. Winds relax back down to 5-10 kts overnight lasting through much of the morning and early afternoon tomorrow. Hickford/Bigelbach && .GLASGOW WATCHES/WARNINGS/ADVISORIES... Winter Storm Watch from Tuesday afternoon through Wednesday afternoon for Central and Southern Valley...Daniels...Eastern Roosevelt...Northern Valley...Sheridan...Western Roosevelt. Winter Storm Watch from Tuesday morning through Wednesday afternoon for Central and Southeast Phillips...Northern Phillips...Southwest Phillips. && weather.gov/glasgow
Hazardous weather outlook, Dec 18, 3:02 AM MST, 11 hours 33 minutes before
Hazardous Weather Outlook National Weather Service Glasgow MT 302 AM MST Mon Dec 18 2017 MTZ016>027-059>062-191015- Central and Southeast Phillips-Central and Southern Valley- Daniels-Sheridan-Western Roosevelt-Petroleum-Garfield-McCone- Richland-Dawson-Prairie-Wibaux-Northern Phillips- Southwest Phillips-Northern Valley-Eastern Roosevelt- 302 AM MST Mon Dec 18 2017 This Hazardous Weather Outlook is for portions of northeast Montana. .DAY ONE...Today and Tonight The probability for widespread hazardous weather Today and Tonight is low. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday A winter system will be moving across the area Wednesday, bringing accumulating snow followed by the coldest air of the season. Several inches of snow are possible Tuesday night into Wednesday, and a Winter Storm Watch has been issued for areas north of the Missouri River. Sub- zero temperatures are possible in some areas Wednesday Night. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures.
The office that day
Everything else NWS Glasgow, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 18, 2:59 AM MST | Winter Storm Watch | GGW | Daniels, Phillips, Roosevelt, Sheridan, Valley | 12 hr |
| Dec 18, 2:35 PM MST | Winter Weather Advisory | GGW | Daniels, Dawson, Garfield, McCone, Petroleum, Phillips and 6 more | 55 hr |
Nearby
Winter Storm Warnings in Montana, 2017Every winter storm warning in 2017
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.