Alert archive / Washington / Special Weather Statements in 2016

Special Weather Statement, NWS Spokane, WA

July 22, 2016Douglas County, Washington

NWS Spokane, WA issued this special weather statement at Jul 22, 2016, 12:37 PM PDT for Douglas County, Washington. It was in force for 38 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: Jul 22, 2016, 12:37 PM PDT (19:37 UTC)
Expired: Jul 22, 2016, 1:15 PM PDT
In force: 38 min
Issued by: NWS Spokane, WA

County Douglas County, WA

The radar

The Spokane radar (KOTX), 124 km from the middle of the area, began a volume at 19:39 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 nearest sounding before it

Spokane, WA (KOTX), launched 12:00Z, 7.6 hours before the alert went out and 215 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 14 J/kg
Mixed-layer CIN: -475 J/kg
Mixed-layer LCL: 2540 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 102 m²/s²
0-3 km storm-relative helicity: 119 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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 Spokane, WA wrote its last area forecast discussion before this special weather statement went out at Jul 22, 11:31 AM PDT, 1 hour 6 minutes earlier.

Area forecast discussion, Jul 22, 11:31 AM PDT, 1 hour 6 minutes before

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Hazardous weather outlook, Jul 22, 6:55 AM PDT, 5 hours 42 minutes before

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In the hours before

Local storm report, Jul 22, 9:12 AM PDT, 3 hours 25 minutes before

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Local storm report, Jul 22, 9:13 AM PDT, 3 hours 24 minutes before

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Special weather statement, Jul 22, 12:37 PM PDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPOKANE WA
1237 PM PDT FRI JUL 22 2016

WAZ035-044-222015-
UPPER COLUMBIA BASIN WA-WATERVILLE PLATEAU WA-
1237 PM PDT FRI JUL 22 2016

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN GRANT...NORTHWESTERN
LINCOLN AND EAST CENTRAL DOUGLAS COUNTIES UNTIL 115 PM PDT...

AT 1235 PM PDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 10
MILES WEST OF BANKS LAKE...OR 12 MILES WEST OF ELECTRIC
CITY. THIS STRONG STORM WAS MOVING SOUTHEAST AT 10 MPH.

DIME SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
BANKS LAKE...STEAMBOAT ROCK STATE PARK...ELECTRIC CITY...
AND HARTLINE..

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

IF ON OR NEAR BANKS LAKE...GET OUT OF THE WATER AND MOVE INDOORS OR
INSIDE A VEHICLE. REMEMBER...LIGHTNING CAN STRIKE OUT TO 10 MILES
FROM THE PARENT THUNDERSTORM. IF YOU CAN HEAR THUNDER...YOU ARE
CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. MOVE TO SAFE SHELTER NOW! DO
NOT BE CAUGHT ON THE WATER IN A THUNDERSTORM.

&&

LAT...LON 4781 11945 4793 11939 4788 11894 4764 11910
TIME...MOT...LOC 1935Z 293DEG 11KT 4786 11934

GKOCH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 21, 5:39 PM PDT	Areal Flood Advisory	OTX	Chelan, Okanogan	3 hr
Jul 21, 7:06 PM PDT	Flash Flood Warning	OTX	Okanogan	114 min
Jul 21, 7:29 PM PDT	Areal Flood Advisory	OTX	Okanogan	3 hr
Jul 21, 8:53 PM PDT	Areal Flood Advisory	OTX	Chelan	3 hr
Jul 22, 5:37 AM PDT	Flash Flood Watch	OTX	Chelan, Douglas, Ferry, Grant, Okanogan	11 hr
Jul 22, 11:14 AM PDT	Areal Flood Advisory	OTX	Chelan, Okanogan	2 hr
Jul 22, 1:46 PM PDT	Areal Flood Advisory	OTX	Ferry, Okanogan	3 hr
Jul 22, 2:04 PM PDT	Areal Flood Advisory	OTX	Stevens	3 hr
Jul 22, 3:22 PM PDT	Special Weather Statement	OTX	Spokane	38 min
Jul 22, 3:54 PM PDT	Severe Thunderstorm Warning	OTX	Spokane	51 min
Jul 22, 4:52 PM PDT	Severe Thunderstorm Warning	OTX	Spokane	34 min
Jul 22, 4:30 PM PDT	Severe Thunderstorm Warning	OTX	Bonner, Kootenai	45 min

Nearby

Special Weather Statements in Washington, 2016 Every special weather statement in 2016

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.