River Flood Watch 16, NWS Spokane, WA

Area Forecast Discussion
National Weather Service Spokane WA
1107 AM PDT Thu May 11 2017

.SYNOPSIS...
The mild weather will come to an end as a strong cold front
arrives this afternoon with a good chance for thunderstorms. Some
storms may produce heavy rain, hail, and gusty winds. A weather
pattern featuring cooler and occasionally showery weather is
expected to last through much of next week.

&&

.DISCUSSION...
Updated the forecast for the timing of the convection. Prefrontal
showers occuring now over the Cascades and north central
Washington with some decent downpours of about a 0.10" an hour,
although the showers are moving northeast at a good clip. Noctural
thunder has ended for the morning and a large thick band of cirrus
is over much of the region. This may stiffle activity for the time
being. The cold front is expected push across the Cascades after
2 pm and head to Spokane toward 5 pm and into north Idaho by early
evening. This front will be accompanied by a band of showers and
thunderstorms and our best chance for strong storms. Will continue
to monitor through the day. /rfox

&&

.AVIATION...
18Z TAFS: In the lull before the front arrives with widespread
cirrus. Convection will increase with the front from the Cascades
into the Basin after 21z and toward KGEG-KPUW-KLWS by 00z. Did
include the mention of thunder for a couple hours with the front
as depicted by the high res models. Then more of a showery regime
will develop for the evening along with gusty west to southwest
winds. Anticipate mostly VFR conditions, although areas of MVFR
cigs are possible as the precipation wanes. More showers are
forecast to develop over the KLWS & KPUW after 14z Friday. /rfox

&&

.PRELIMINARY POINT TEMPS/POPS...
Spokane        74  45  54  38  55  39 /  30 100  70  10  60  30
Coeur d'Alene  76  45  52  37  54  38 /  20 100  80  10  60  50
Pullman        74  44  51  38  54  39 /  30 100  70  20  60  40
Lewiston       81  49  56  41  58  42 /  20  90  70  20  70  50
Colville       74  47  57  38  56  39 /  20  90  70  20  60  60
Sandpoint      75  44  53  36  54  37 /  30  90  80  30  70  60
Kellogg        78  42  49  36  52  37 /  20  90  90  30  80  60
Moses Lake     73  46  64  41  63  41 /  50  50  10  10  20  20
Wenatchee      68  45  60  41  59  42 /  90  50  20  10  50  30
Omak           70  47  61  39  60  40 /  90  70  30  10  50  30

&&

.OTX WATCHES/WARNINGS/ADVISORIES...
ID...None.
WA...None.
&&

Hazardous Weather Outlook
National Weather Service Spokane WA
516 AM PDT Thu May 11 2017

IDZ001>004-026-027-WAZ031>038-041>044-121300-
NORTHERN PANHANDLE-COEUR D'ALENE AREA-IDAHO PALOUSE-
CENTRAL PANHANDLE MOUNTAINS-LEWISTON AREA-
LEWIS AND SOUTHERN NEZ PERCE COUNTIES-NORTHEAST BLUE MOUNTAINS-
LOWER GARFIELD AND ASOTIN COUNTIES-WASHINGTON PALOUSE-
MOSES LAKE AREA-UPPER COLUMBIA BASIN-SPOKANE AREA-
NORTHEAST MOUNTAINS-OKANOGAN HIGHLANDS-WENATCHEE AREA-
EAST SLOPES NORTHERN CASCADES-OKANOGAN VALLEY-WATERVILLE PLATEAU-
516 AM PDT Thu May 11 2017

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

.DAY ONE...TODAY AND TONIGHT

Scattered thunderstorms are expected across the region today. Some
storms may be strong to locally severe capable of producing gusty
winds, hail, torrential downpours and frequent lightning. Those
with outdoor plans are urged to remain vigilant and be prepared to
seek shelter if a dangerous storm approaches.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

Thunderstorms will remain in the forecast Friday afternoon across
central Washington and Saturday afternoon across northeast
Washington and north Idaho.