Alert archive / Montana / Flood Watches in 2013

Flood Watch 3, NWS Missoula, MT

May 9, 2013Flathead County, Lincoln County, Montana

NWS Missoula, MT issued this flood watch at May 9, 2013, 12:16 PM MDT for Flathead County, Lincoln County, Montana. It was in force for 4 days.

The area

The counties it named.

The facts

Issued
May 9, 2013, 12:16 PM MDT (18:16 UTC)
Expired
May 13, 2013, 11:05 AM MDT
In force
4 days
Issued by
NWS Missoula, MT
Flood severity
None

Counties Flathead County, MT, Lincoln County, MT

The radar

The Missoula radar (KMSX), 163 km from the middle of the area, began a volume at 18:18 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 forecasters said that day

The local office's own words before this flood watch 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 flood watch went out at May 9, 3:22 AM MDT, 8 hours 54 minutes earlier.

Area forecast discussion, May 9, 3:22 AM MDT, 8 hours 54 minutes before
Area Forecast Discussion
National Weather Service Missoula MT
322 AM MDT Thu May 9 2013

...SIGNIFICANT RIVER LEVEL RISES CONTINUING ACROSS NORTHERN ROCKIES...
...STRONG WINDS LATE THIS WEEKEND/EARLY NEXT WEEK...

.DISCUSSION...Windy conditions with thunderstorm chances will be possible
Sunday night into Monday as a cold front moves through the region.
The amount of moisture in uncertain but gusty winds do have a good
chance to form on Monday.

Before the cold front arrives, high pressure will remain in place to
the west of the region today bringing conditions very similar to
Wednesday. There are some subtle features moving through the
northwesterly flow over Idaho and western Montana and these will meet
with lingering moisture in southwest Montana and southern Idaho this
afternoon. The combination will bring another round of isolated
thunderstorms this afternoon and evening.

High pressure will position itself over Idaho and western Montana
on Friday, but a shortwave trough will pass to the east and could
cause some easterly winds to develop in western Montana. There
could also be a few showers and a possible thunderstorm, otherwise
temperatures will be a few degrees cooler, though still well above
average.

High pressure will maintain into this weekend before flattening
for the beginning of the week. A few showers are possible during
the weekend and very warm temperatures will continue.

Tuesday and Wednesday...Relatively drier conditions return to the
Northern Rockies, as a weak ridge develops along the west coast
and slowly moves to the east.

&&

.AVIATION...Northwesterly flow will remain over the region today
with generally favorable spring weather. A few weak features are
moving through the upper flow and are currently resulting in some
high cloud cover. High resolution model data show the potential
for these weak features to develop into isolated thunderstorms
this afternoon in southwest Montana and into southern Idaho. KBTM
and KSMN have the best chances this afternoon for cumulus build-
ups and isolated thunderstorms. Any storms that develop will
dissipate through the evening.

&&

.MSO WATCHES/WARNINGS/ADVISORIES...
MT...None.
ID...None.
&&

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In the hours before

Local storm report, May 9, 8:22 AM MDT, 3 hours 54 minutes before
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Nearby

Flood Watches in Montana, 2013Every flood watch in 2013

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.