Alert archive / North Dakota / Special Weather Statements in 2017
Special Weather Statement, NWS Bismarck, ND
NWS Bismarck, ND issued this special weather statement at Aug 8, 2017, 2:00 PM MDT for Grant County, North Dakota. It was in force for 45 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 8, 2017, 2:00 PM MDT (20:00 UTC)
- Expired
- Aug 8, 2017, 2:45 PM MDT
- In force
- 45 min
- Issued by
- NWS Bismarck, ND
County Grant County, ND
The radar
The Bismarck radar (KBIS), 97 km from the middle of the area, began a volume at 20:02 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.
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 12:00Z, 8.0 hours before the alert went out and 101 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
- 1516 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 55 m²/s²
- 0-3 km storm-relative helicity
- 65 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Bismarck, ND wrote its last area forecast discussion before this special weather statement went out at Aug 8, 12:52 PM MDT, 1 hour 8 minutes earlier.
Area forecast discussion, Aug 8, 12:52 PM MDT, 1 hour 8 minutes before
Area Forecast Discussion...CORRECTED National Weather Service Bismarck ND 152 PM CDT Tue Aug 8 2017 .SHORT TERM...(This evening through Wednesday) Issued at 108 PM CDT Tue Aug 8 2017 Shower and thunderstorm potential this afternoon through Wednesday highlights the short term forecast. Surface based convection across western into North central North Dakota is expected to increase over the next 2-3 hours, between 20-22 UTC, ahead of the shortwave across eastern Montana evident on water vapor imagery. MLCAPE around 800-1000 j/kg and marginal deep layer shear of 25-30kts suggest that the potential for severe convection is low. Scattered showers and thunderstorms will continue through the night across most of western and central North Dakota reinforced by the stronger wave that will propagate out of Saskatchewan. Scattered showers and storms are favored to continue through much of the day northwest and central per the 12 UTC global consensus and 12-15 UTC CAM suites. Certainly cannot rule out a strong to severe thunderstorm south central where MLCAPE values of 1000-1500 j/kg are expected with marginal deep layer shear of 25-30 kts ahead of the strong upper level wave. Large hail to quarter size, damaging winds to 60 mph, and dangerous lightning are the primary threats. .LONG TERM...(Wednesday night through Tuesday) Issued at 108 PM CDT Tue Aug 8 2017 Slightly below normal temperatures through the weekend highlight the extended forecast. The 12 UTC global consensus is in agreement on mean cyclonic northwest flow aloft to continue into the weekend across western and central North Dakota. This favors slightly below normal temperatures in the 70s to the lower 80s. Thereafter, there are some hints at possibly at least shortwave ridging early next week that could mean a brief return to a bit warmer temperatures. However, this is somewhat uncertain. There is a chance of thunderstorms Friday through Saturday with a series of shortwaves embedded in the flow. While the severe threat is non-zero, widespread severe weather is also not favored at this time. && .AVIATION...(For the 18Z TAFS through 18Z Wednesday afternoon) Issued at 108 PM CDT Tue Aug 8 2017 Scattered thunderstorms will develop across western North Dakota this afternoon, with a few isolated showers and thunderstorms central. Scattered showers and thunderstorms will continue west and central through tonight into Wednesday. MVFR/IFR conditions in precipitation are possible. && .BIS WATCHES/WARNINGS/ADVISORIES... NONE. && SHORT TERM...PA LONG TERM...PA AVIATION...PA
Hazardous weather outlook, Aug 8, 12:38 PM MDT, 1 hour 22 minutes before
Hazardous Weather Outlook National Weather Service Bismarck ND 138 PM CDT Tue Aug 8 2017 NDZ001>005-009>013-017>023-025-031>037-040>048-050-051-091845- Divide-Burke-Renville-Bottineau-Rolette-Williams-Mountrail-Ward- McHenry-Pierce-McKenzie-Dunn-Mercer-Oliver-McLean-Sheridan-Wells- Foster-Golden Valley-Billings-Stark-Morton-Burleigh-Kidder- Stutsman-Slope-Hettinger-Grant-Bowman-Adams-Sioux-Emmons-Logan- La Moure-McIntosh-Dickey- 138 PM CDT Tue Aug 8 2017 /1238 PM MDT Tue Aug 8 2017/ This Hazardous Weather Outlook is for portions of north central North Dakota, northwest North Dakota, south central North Dakota, southeast North Dakota, and southwest North Dakota. .DAY ONE...This Afternoon and Tonight Scattered thunderstorms will develop across western North Dakota this afternoon, with a few isolated showers and thunderstorms north central. Scattered showers and thunderstorms will continue west and central through tonight. Severe weather is not expected. .DAYS TWO THROUGH SEVEN...Wednesday through Monday Chances for showers and thunderstorms will continue through Wednesday across northwest and central North Dakota. A few thunderstorms could be strong to severe far south central in the afternoon and evening. Large hail to quarter size, damaging winds to 60 mph, and dangerous lightning are the primary threats. Chances for thunderstorms return Friday through Saturday. Severe weather is not expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed south central Wednesday afternoon and early evening.
In the hours before
Special weather statement, Aug 8, 1:14 PM MDT, 46 minutes before
Special Weather Statement National Weather Service Bismarck ND 114 PM MDT TUE AUG 8 2017 NDZ033-041-042-044-045-082000- Grant ND-Hettinger ND-Sioux ND-Stark ND-Adams ND- 114 PM MDT TUE AUG 8 2017 ...STRONG THUNDERSTORMS WILL AFFECT SOUTHWESTERN SIOUX... HETTINGER...SOUTHEASTERN STARK...WESTERN GRANT AND ADAMS COUNTIES UNTIL 200 PM MDT... At 112 PM MDT, Doppler radar was tracking a strong thunderstorm near Mott, moving east at 15 mph. Other showers and thunderstorms were developing across southwestern and south central North Dakota, and will be moving east at around 15 mph. Half inch hail and wind gusts to 40 mph will be possible with some of these storms. Locations impacted include... Hettinger, Mott, Elgin, New Leipzig, Regent, Haynes, Heart Butte Dam, Burt, Bentley and Lefor. LAT...LON 4596 10278 4672 10270 4671 10172 4595 10181 TIME...MOT...LOC 1912Z 254DEG 13KT 4641 10226 VINING
Special weather statement, Aug 8, 1:24 PM MDT, 36 minutes before
Special Weather Statement National Weather Service Bismarck ND 124 PM MDT TUE AUG 8 2017 NDZ031-032-040-043-082015- Golden Valley ND-Billings ND-Slope ND-Bowman ND- 124 PM MDT TUE AUG 8 2017 ...STRONG THUNDERSTORMS WILL AFFECT GOLDEN VALLEY...BOWMAN... SOUTHWESTERN BILLINGS AND SLOPE COUNTIES UNTIL 215 PM MDT... At 122 PM MDT, Doppler radar was tracking a strong thunderstorm 15 miles west of Amidon, moving east at 15 mph. Other showers and thunderstorms were developing across southwestern North Dakota, and will be moving east at around 15 mph. Half inch hail and wind gusts to 40 mph will be possible with these storms. Locations impacted include... Bowman, Beach, Amidon, Medora, Sunset Butte, Bowman Haley Dam, Fryburg, Buffalo Springs, Three V Crossing, Pretty Butte and Alpha. Frequent cloud to ground lightning is occurring with this storm. Lightning can strike 10 miles away from a thunderstorm. Seek shelter inside a building or vehicle. && LAT...LON 4707 10404 4708 10323 4595 10322 4594 10404 TIME...MOT...LOC 1922Z 265DEG 14KT 4654 10365 HARGROVE
Special weather statement, Aug 8, 2:00 PM MDT, 0 minutes before
Special Weather Statement
National Weather Service Bismarck ND
300 PM CDT TUE AUG 8 2017
NDZ034-041-042-082045-
Grant ND-Hettinger ND-Morton ND-
300 PM CDT TUE AUG 8 2017
...STRONG THUNDERSTORMS WILL AFFECT EASTERN HETTINGER...WEST CENTRAL
MORTON AND NORTHWESTERN GRANT COUNTIES UNTIL 345 PM CDT/245 PM
MDT/...
At 258 PM CDT/158 PM MDT/, Doppler radar was tracking a strong
thunderstorm 6 miles west of Heart Butte Dam, or 12 miles northwest
of Elgin, moving east at 15 mph. Other strong storms extended from
north of Heart Butte Dam southward to New Leipzig and Bentley.
Penny size hail and wind gusts to 40 mph will be possible with
these storms. Seek shelter if these storms approach.
Locations impacted include...
Elgin, Carson, New Leipzig, Almont, Heart Butte Dam, Burt, Leith,
Heil and Bentley.
LAT...LON 4623 10223 4663 10211 4663 10210 4671 10209
4673 10143 4620 10151
TIME...MOT...LOC 1958Z 263DEG 15KT 4657 10194
VININGThe office that day
Everything else NWS Bismarck, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 8, 1:14 PM MDT | Special Weather Statement | BIS | Adams, Hettinger | 46 min |
| Aug 8, 1:24 PM MDT | Special Weather Statement | BIS | Billings, Bowman, Golden Valley, Slope | 51 min |
| Aug 8, 2:16 PM MDT | Special Weather Statement | BIS | Slope | 44 min |
| Aug 8, 2:49 PM MDT | Special Weather Statement | BIS | Grant, Morton | 41 min |
| Aug 8, 3:01 PM MDT | Special Weather Statement | BIS | Adams | 44 min |
| Aug 8, 3:22 PM MDT | Severe Thunderstorm Warning | BIS | Adams, Sioux | 53 min |
| Aug 8, 3:31 PM MDT | Special Weather Statement | BIS | Grant | 44 min |
| Aug 8, 3:47 PM MDT | Special Weather Statement | BIS | Slope | 43 min |
| Aug 8, 3:52 PM MDT | Severe Thunderstorm Warning | BIS | Adams, Bowman, Hettinger, Slope | 35 min |
| Aug 8, 4:13 PM MDT | Special Weather Statement | BIS | Sioux | 47 min |
| Aug 8, 4:25 PM MDT | Special Weather Statement | BIS | Golden Valley | 50 min |
| Aug 8, 4:59 PM MDT | Special Weather Statement | BIS | Sioux | 46 min |
| Aug 8, 5:06 PM MDT | Special Weather Statement | BIS | Adams | 39 min |
| Aug 8, 5:23 PM MDT | Special Weather Statement | BIS | Sioux | 22 min |
| Aug 8, 5:40 PM MDT | Special Weather Statement | BIS | Billings | 50 min |
Nearby
Special Weather Statements in North Dakota, 2017Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.