Alert archive / Montana / Special Weather Statements in 2024

Special Weather Statement, NWS Great Falls, MT

August 6, 2024Broadwater County, Montana

NWS Great Falls, MT issued this special weather statement at Aug 6, 2024, 6:13 PM MDT for Broadwater County, Montana. It was in force for 47 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 6, 2024, 6:13 PM MDT (00:13 UTC)
Expired: Aug 6, 2024, 7:00 PM MDT
In force: 47 min
Issued by: NWS Great Falls, MT
Hail: 0.25 in
Wind: 50

County Broadwater County, MT

The radar

The Great Falls radar (KTFX), 142 km from the middle of the area, began a volume at 00:16 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 Great Falls, MT wrote its last area forecast discussion before this special weather statement went out at Aug 6, 2:25 PM MDT, 3 hours 48 minutes earlier.

Area forecast discussion, Aug 6, 2:25 PM MDT, 3 hours 48 minutes before

Area Forecast Discussion
National Weather Service Great Falls MT
225 PM MDT Tue Aug 6 2024

.SYNOPSIS...

Widespread showers and thunderstorms are expected through the
evening hours tonight across portions of Southwest, Central, and
North Central Montana, with showers and thunderstorms lingering
into the morning hours on Wednesday across Central and North
Central Montana. A few thunderstorms through the evening hours
could become severe and produce damaging winds and large hail,
with the highest chance of seeing these storms existing over
Central and North Central Montana.

&&

.DISCUSSION...

Rest of today through tonight...primary concern through the early to
mid-evening hours tonight (i.e. 6-9PM MDT) will be the threat for
large hail and damaging winds; particularly northeast of a Townsend,
to Helena, to Lincoln, to Browning line where a 15-30% chance of
seeing damaging winds and/or large hail exists. Additionally, a
marginal risk (i.e. 5% chance) for excessive rainfall leading to
flash flooding exists northeast of a Bozeman to Boulder line, with
the primary concern for flash flooding being confined to recent burn
scars given their lowered flash flooding values. Latest NBM
probabilities for rainfall supports a 60% or greater chance for
0.25" north of a Kings Hill Pass to Bowman Corner line through 12z
Wednesday, with generally a 30-60% chance of 0.5" or greater across
these same areas. Showers and general thunderstorms will linger
beyond the main severe thunderstorm threat window, especially
northeast of a Kings Hill Pass to Bowman Corner line, through the
morning hours on Wednesday. - Moldan

Wednesday through next Tuesday...Precipitation lingers into
Wednesday morning as we transition into northwest flow aloft. A cold
front Wednesday will bring another round of scattered showers and
storms during the afternoon, but not to the intensity of Tuesday's
storms. The upper level low to our northeast in Canada, will help
usher in cooler air for Wednesday and Thursday. This will drop
temperatures to 10-20 degrees below normal. The upper level low also
continues to wrap moisture around it into the region, so another
round of precipitation is forecasted for Thursday.

Daily rounds of precipitation is still forecasted through the
beginning of next week, as upper level trough returns to the
Northwest U.S Friday and through the forecast period. Though,
this will bring southwesterly flow aloft and help temperatures
gradually warm up back to close to seasonal averages for the
beginning of next week. -Wilson

&&

.AVIATION...
06/18Z TAF Period

The first concern for today will be for showers and thunderstorms
developing this afternoon, spreading east and northeastward with
time through the late afternoon and evening. Gusty winds, hail, and
lightning are the main concerns with stronger thunderstorms. Then,
sub-VFR ceilings move in from the north overnight across the plains,
with additional showers and isolated thunderstorms around through
the morning tomorrow across Central and North-central Montana.
Mountains will be obscured across North-central and portions of
Central Montana from late tonight into tomorrow. -AM

Refer to weather.gov/zlc for more detailed regional aviation
weather and hazard information.

&&

.PRELIMINARY POINT TEMPS/POPS...
GTF  55  63  50  68 / 100  80  30  20
CTB  50  61  46  66 / 100  90  40  20
HLN  58  74  53  73 /  70  70  20  30
BZN  52  79  49  72 /  50  50  30  20
WYS  42  76  42  73 /  30  30  30  20
DLN  49  78  46  72 /  30  20  10  10
HVR  55  68  48  71 /  90  70  20  10
LWT  53  63  43  64 /  90  90  40  30

&&

.TFX WATCHES/WARNINGS/ADVISORIES...
None.
&&

http://www.weather.gov/greatfalls

In the hours before

Local storm report, Aug 6, 5:15 PM MDT, 58 minutes before

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Special weather statement, Aug 6, 5:23 PM MDT, 50 minutes before

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Special weather statement, Aug 6, 5:23 PM MDT, 50 minutes before

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Local storm report, Aug 6, 5:26 PM MDT, 47 minutes before

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Special weather statement, Aug 6, 5:34 PM MDT, 39 minutes before

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Special weather statement, Aug 6, 5:59 PM MDT, 14 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 6, 6:01 PM MDT	Special Weather Statement	TFX	Toole	29 min
Aug 6, 6:05 PM MDT	Severe Thunderstorm Warning	TFX	Glacier, Toole	25 min
Aug 6, 6:07 PM MDT	Severe Thunderstorm Warning	TFX	Lewis and Clark	38 min
Aug 6, 6:09 PM MDT	Severe Thunderstorm Warning	TFX	Glacier	51 min
Aug 6, 6:41 PM MDT	Severe Thunderstorm Warning	TFX	Cascade, Lewis and Clark	19 min
Aug 6, 6:45 PM MDT	Severe Thunderstorm Warning	TFX	Glacier, Pondera	45 min
Aug 6, 6:56 PM MDT	Special Weather Statement	TFX	Pondera	34 min
Aug 6, 7:23 PM MDT	Severe Thunderstorm Warning	TFX	Pondera, Teton	52 min
Aug 6, 7:33 PM MDT	Special Weather Statement	TFX	Lewis and Clark	42 min
Aug 6, 7:33 PM MDT	Special Weather Statement	TFX	Pondera	42 min
Aug 6, 7:43 PM MDT	Severe Thunderstorm Warning	TFX	Glacier, Pondera, Teton, Toole	47 min
Aug 6, 8:23 PM MDT	Severe Thunderstorm Warning	TFX	Cascade, Chouteau, Teton	52 min
Aug 6, 8:24 PM MDT	Special Weather Statement	TFX	Liberty	36 min
Aug 6, 9:02 PM MDT	Severe Thunderstorm Warning	TFX	Cascade, Chouteau	43 min
Aug 6, 9:41 PM MDT	Special Weather Statement	TFX	Judith Basin	34 min

Nearby

Special Weather Statements in Montana, 2024 Every special weather statement in 2024

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.