Alert archive / Idaho / Areal Flood Warnings in 2017

Areal Flood Warning 2, NWS Spokane, WA

February 9, 2017Shoshone County, Idaho

NWS Spokane, WA issued this areal flood warning at Feb 9, 2017, 2:55 PM PST for Shoshone County, Idaho. It was in force for 4 days. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Feb 9, 2017, 2:55 PM PST (22:55 UTC)
Expired
Feb 13, 2017, 2:45 PM PST
In force
4 days
Issued by
NWS Spokane, WA
Area
Storm-based polygon
Flood severity
None

County Shoshone County, ID

The radar

The Spokane radar (KOTX), 135 km from the middle of the area, began a volume at 22:59 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 areal flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Spokane, WA wrote its last area forecast discussion before this areal flood warning went out at Feb 9, 2:35 PM PST, 20 minutes earlier.

Area forecast discussion, Feb 9, 2:35 PM PST, 20 minutes before
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Hazardous weather outlook, Feb 9, 1:13 PM PST, 1 hour 42 minutes before
Hazardous Weather Outlook
National Weather Service Spokane WA
113 PM PST Thu Feb 9 2017

IDZ001-004-WAZ037-038-042-102115-
NORTHERN PANHANDLE-CENTRAL PANHANDLE MOUNTAINS-
NORTHEAST MOUNTAINS-OKANOGAN HIGHLANDS-
EAST SLOPES NORTHERN CASCADES-
113 PM PST Thu Feb 9 2017

This Hazardous Weather Outlook is for portions of North Idaho...
North Central Washington and Northeast Washington.

.DAY ONE...THIS AFTERNOON AND TONIGHT

In the Cascade valleys south of Lake Chelan a period of freezing
rain and sleet will cause ice accumulations making travel
difficult today. Pockets of freezing rain are possible during this
change over in the northern valleys.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

The combination of rain and snow as well as warmer temperatures
could lead to localized flooding issues due to melting snow and
runoff. Ice jam flooding is also possible. The main threat of
flooding will occur over the central Idaho Panhandle.

On or about next Wednesday computer models suggest another
atmospheric river will spread potentially heavy valley rain and
mountain snow across the region.

IDZ002-003-026-027-WAZ031>033-036-102115-
COEUR D'ALENE AREA-IDAHO PALOUSE-LEWISTON AREA-
LEWIS AND SOUTHERN NEZ PERCE COUNTIES-NORTHEAST BLUE MOUNTAINS-
LOWER GARFIELD AND ASOTIN COUNTIES-WASHINGTON PALOUSE-
SPOKANE AREA-
113 PM PST Thu Feb 9 2017

This Hazardous Weather Outlook is for portions of North Idaho...
North Central Idaho...Northeast Washington and Southeast
Washington.

.DAY ONE...THIS AFTERNOON AND TONIGHT

Most freezing rain had ended but some pockets of freezing rain
could linger up in a few locations...otherwise A combination of
rain and snow with warmer temperatures could lead to localized
flooding issues due to melting snow and runoff. Ice jam flooding
is also possible.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

Continued snow melt and recent rain fall will lead to continuing
localized flooding issues due to melting snow and runoff through
Friday. Ice jam flooding is also possible.

On or about next Wednesday computer models suggest another
atmospheric river will spread potentially heavy rain across the
region potentially leading to more flooding problems.

WAZ034-035-041-043-044-102115-
MOSES LAKE AREA-UPPER COLUMBIA BASIN-WENATCHEE AREA-
OKANOGAN VALLEY-WATERVILLE PLATEAU-
113 PM PST Thu Feb 9 2017

This Hazardous Weather Outlook is for portions of Central
Washington...East Central Washington and North Central
Washington.

.DAY ONE...THIS AFTERNOON AND TONIGHT

A combination of recent rain and snow as with warmer temperatures
could lead to localized flooding issues due to melting snow and
runoff through Friday.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

The combination of recent rain and snow as well as warmer
temperatures could lead to localized flooding issues due to
melting snow and runoff through Friday.

In the hours before

Local storm report, Feb 9, 8:56 AM PST, 5 hours 59 minutes before
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Local storm report, Feb 9, 9:34 AM PST, 5 hours 21 minutes before
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Local storm report, Feb 9, 11:49 AM PST, 3 hours 6 minutes before
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Local storm report, Feb 9, 12:47 PM PST, 2 hours 8 minutes before
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Local storm report, Feb 9, 1:35 PM PST, 1 hour 20 minutes before
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The office that day

Everything else NWS Spokane, WA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 9, 3:19 AM PSTIce Storm WarningOTXAdams, Chelan, Douglas, Grant, Lincoln, Okanogan and 1 more9 hr

Nearby

Areal Flood Warnings in Idaho, 2017Every areal flood 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; radar from the NEXRAD Level II archive.