Alert archive / Washington / Dust Storm Warnings in 2020

Dust Storm Warning 4, NWS Spokane, WA

September 7, 20204 counties in Washington

NWS Spokane, WA issued this dust storm warning at Sep 7, 2020, 12:50 PM PDT for 4 counties in Washington. It was in force for 85 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Sep 7, 2020, 12:50 PM PDT (19:50 UTC)
Expired
Sep 7, 2020, 2:15 PM PDT
In force
85 min
Issued by
NWS Spokane, WA
Area
Storm-based polygon

Counties Adams County, WA, Lincoln County, WA, Spokane County, WA, Whitman County, WA

The radar

The Spokane radar (KOTX), 53 km from the middle of the area, began a volume at 19:53 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 dust storm 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 dust storm warning went out at Sep 7, 10:49 AM PDT, 2 hours 1 minute earlier.

Area forecast discussion, Sep 7, 10:49 AM PDT, 2 hours 1 minute before
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Hazardous weather outlook, Sep 7, 5:15 AM PDT, 7 hours 35 minutes before
Hazardous Weather Outlook
National Weather Service Spokane WA
515 AM PDT Mon Sep 7 2020

IDZ001-002-004-WAZ032>038-041-043-044-081300-
Northern Panhandle-Coeur d'Alene Area-Central Panhandle Mountains-
Lower Garfield and Asotin Counties-Washington Palouse-
Moses Lake Area-Upper Columbia Basin-Spokane Area-
Northeast Mountains-Okanogan Highlands-Wenatchee Area-
Okanogan Valley-Waterville Plateau-
515 AM PDT Mon Sep 7 2020

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

.DAY ONE...TODAY AND TONIGHT

Blowing dust is expected across the Waterville Plateau and into
the Columbia Basin. Visibilities of a quarter mile or less is
likely, which could lead to road closures. Difficulty driving
high profile vehicles along east west roads is expected. Damage to
trees and limbs is possible. Trees may blown down and power
outages will result. Lakes will become choppy and dangerous to be
on. Gusty winds will blow around unsecured objects.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

No hazardous weather is expected at this time.

IDZ003-026-027-WAZ031-042-081300-
Idaho Palouse-Lewiston Area-Lewis and Southern Nez Perce Counties-
Northeast Blue Mountains-East Slopes Northern Cascades-
515 AM PDT Mon Sep 7 2020

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

.DAY ONE...TODAY AND TONIGHT

Breezy to windy conditions are expected today.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

No hazardous weather is expected at this time.

In the hours before

Local storm report, Sep 7, 8:52 AM PDT, 3 hours 58 minutes before
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Local storm report, Sep 7, 10:18 AM PDT, 2 hours 32 minutes before
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Local storm report, Sep 7, 12:07 PM PDT, 43 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SPOKANE WA
1207 PM PDT MON SEP 7 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1120 AM     DUST STORM       RITZVILLE               47.12N 118.37W
09/07/2020                   ADAMS              WA   PUBLIC

            SPOTTER ADAMS 21 REPORTING VISIBILITY LESS
            THAN QUARTER MILE WITH BLOWING DUST.

1119 AM     DUST STORM       5 E CUNNINGHAM          46.82N 118.69W
09/07/2020                   ADAMS              WA   PUBLIC

            COLLISIONS BLOCKING US 395 AT MILEPOST 72.
            SOURCE TWEET FROM SPOKANE REGIONAL TRAFFIC
            MANAGEMENT CENTER.

&&
Local storm report, Sep 7, 12:19 PM PDT, 31 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SPOKANE WA
1219 PM PDT MON SEP 7 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1218 PM     DUST STORM       9 N LIND                47.10N 118.63W
09/07/2020                   ADAMS              WA   DEPT OF HIGHWAYS

            BLOWING DUST CAUSED SEVERAL COLLISIONS. ONE
            CRASH INVOLVING AT LEAST 9 VEHICLES.
            WASHINGTON DOT CLOSING INTERSTATE 90 FROM
            RITZVILLE TO GRANT COUNTY LINE.

1203 PM     NON-TSTM WND DMG 1 NNE POST FALLS        47.73N 116.94W
09/07/2020                   KOOTENAI           ID   BROADCAST MEDIA

            LARGE TREE TOPPLED DAMAGING FENCE. TWITTER
            FROM KREM WEATHER.

&&

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 7, 1:44 AM PDTHigh Wind WarningOTXAdams, Douglas, Grant, Lincoln, Okanogan18 hr
Sep 7, 2:09 PM PDTDust Storm WarningOTXAdams, Whitman96 min
Sep 7, 3:48 PM PDTDust Storm WarningOTXAdams, Whitman87 min

Nearby

Dust Storm Warnings in Washington, 2020Every dust storm warning in 2020

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.