Alert archive / Montana / Special Weather Statements in 2017

Special Weather Statement, NWS Missoula, MT

August 30, 2017Lincoln County, Montana

NWS Missoula, MT issued this special weather statement at Aug 30, 2017, 4:39 AM MDT for Lincoln County, Montana. It was in force for 51 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 30, 2017, 4:39 AM MDT (10:39 UTC)
Expired: Aug 30, 2017, 5:30 AM MDT
In force: 51 min
Issued by: NWS Missoula, MT

County Lincoln County, MT

The radar

The Missoula radar (KMSX), 189 km from the middle of the area, began a volume at 10:41 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 text

As transmitted.

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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 Missoula, MT wrote its last area forecast discussion before this special weather statement went out at Aug 30, 4:11 AM MDT, 28 minutes earlier.

Area forecast discussion, Aug 30, 4:11 AM MDT, 28 minutes before

Area Forecast Discussion
National Weather Service Missoula MT
411 AM MDT Wed Aug 30 2017

...Red Flag Warnings in effect this afternoon through Thursday...

.DISCUSSION...An early morning thunderstorm is entering far
northwest Montana from the Idaho Panhandle. This storm should
continue to impact northwest Montana with gusty outflows of 20-40
mph and lightning through the morning hours.

Red Flag Warnings are in effect through this evening for mainly
dry thunderstorms with gusty outflow winds. Scattered
thunderstorms will develop as early as late this morning and
continue through this evening across the majority of the Northern
Rockies. The best potential for storms will be in central Idaho
across west central and southwest Montana. Storms that occur won't
bring a great deal of precipitation but rather be associated with
lightning and gusty outflow winds of 30-50 mph.

Red Flag Warnings will continue Thursday as a dry cold front
pushes through the region resulting in sustained west winds of
10-20 mph with gusts up to 30 mph.

Dry weather will continue through the weekend. High pressure will
re-establish itself over central Idaho. However northwest Montana
will remain under a breezy westerly flow with winds materializing
each afternoon and evening.

Late Sunday through Tuesday next week models are pretty consistent
showing a cool front moving in from the northeast and across the
continental divide. The biggest impact from this will be some
cooler temperatures and an increase in easterly winds especially
along the continental divide. Confidence is increasing for this
scenario however there continues to be quite a bit of uncertainty
how strong easterly winds may materialize.

&&

.AVIATION...A weak disturbance will be moving through extreme
northwest Montana this morning causing a few showers and an
isolated thunderstorms. These storms will be capable of producing
gusty and erratic winds. KGPI could be impacted by this feature
later this morning. Smoke over west central Montana will reduce
visibility to less than 3sm at times this morning with KMSO having
the biggest impact. This afternoon, the atmosphere destabilizing
allowing for increased shower activity, especially across north
central Idaho into west central and southwest Montana. These
storms will have a little more precipitation associated with them,
but gusty and erratic winds will be the main impact.

&&

.MSO WATCHES/WARNINGS/ADVISORIES...
MT...Red Flag Warning from 1 PM this afternoon to 9 PM MDT Thursday
     Deerlodge/West Beaverhead...East Beaverhead.

     Red Flag Warning from 1 PM this afternoon to 9 PM MDT Thursday
     Bitterroot...East Lolo...Flathead/Glacier Park...Salish and
     Kootenai Reservation...West Lolo.

     Red Flag Warning from midnight tonight to 9 PM MDT Thursday
     Kootenai.

ID...     Red Flag Warning from noon today to 8 PM PDT this evening
     Clearwater/Nez Perce...Palouse/Hells Canyon.

&&

In the hours before

Special weather statement, Aug 30, 3:44 AM MDT, 55 minutes before

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Special weather statement, Aug 30, 4:02 AM MDT, 37 minutes before

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Special weather statement, Aug 30, 4:39 AM MDT, 0 minutes before

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The office that day

Everything else NWS Missoula, MT issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 29, 7:18 PM MDT	Special Weather Statement	MSO	Mineral	27 min
Aug 30, 3:44 AM MDT	Special Weather Statement	MSO	Sanders	46 min
Aug 30, 4:02 AM MDT	Special Weather Statement	MSO	Lincoln	43 min
Aug 30, 2:16 PM MDT	Special Weather Statement	MSO	Ravalli	29 min
Aug 30, 3:29 PM MDT	Special Weather Statement	MSO	Deer Lodge	46 min
Aug 30, 4:41 PM MDT	Special Weather Statement	MSO	Powell	34 min
Aug 30, 4:46 PM MDT	Special Weather Statement	MSO	Lincoln	44 min
Aug 30, 5:00 PM MDT	Special Weather Statement	MSO	Missoula	45 min
Aug 30, 5:35 PM MDT	Special Weather Statement	MSO	Lincoln	40 min
Aug 30, 2:30 PM MDT	Special Weather Statement	MSO	Lewis	45 min
Aug 30, 3:19 PM MDT	Special Weather Statement	MSO	Lewis	41 min
Aug 30, 4:05 PM MDT	Special Weather Statement	MSO	Lewis	40 min

Nearby

Special Weather Statements in Montana, 2017 Every 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; radar from the NEXRAD Level II archive.