Flash Flood Warning 1, NWS Spokane, WA

490 
WGUS76 KOTX 032143
FFSOTX

Flash Flood Statement
National Weather Service Spokane WA
243 PM PDT Fri Jun 3 2022

WAC019-047-032153-
/O.CAN.KOTX.FF.W.0001.000000T0000Z-220603T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Ferry WA-Okanogan WA-
243 PM PDT Fri Jun 3 2022

...FLASH FLOOD WARNING FOR THE BURN SCAR IS CANCELLED FOR EASTERN 
OKANOGAN AND SOUTHWESTERN FERRY COUNTIES...

The heavy rain has ended. Flooding is no longer expected to pose a 
threat. Please continue to heed remaining road closures.

LAT...LON 4804 11890 4807 11896 4812 11901 4816 11901
      4820 11898 4820 11896 4827 11874 4822 11872
      4817 11872 4809 11876 4805 11884 4805 11885

$$

RP

Area Forecast Discussion
National Weather Service Spokane WA
1124 AM PDT Fri Jun 3 2022

.SYNOPSIS...
Another round of numerous showers and scattered thunderstorms are
expected for today. Thunderstorms will be capable of producing
very heavy rain with flash flooding and debris flows possible.
Temperatures cool for the weekend with several periods of rain,
and possible thunderstorms again on Sunday. The weather will dry
out a bit for the start of next week with temperatures possibly
warming up towards normal values for the middle of next week.

&&

.DISCUSSION...

The forecast for the rest of today looks to be mostly on track.
We will be monitoring convection through the afternoon hours.
Elevated convection is expanding from the Yakima area to Moses
Lake, Ephrata, and Wenatchee late this morning. We have observed
lightning associated with this, but instability at mid levels is
weak with the strength of these cells remaining weak as well.
There will be moderate to locally heavy rainfall from these
thunderstorms and that will be of particular concern if they shift
over burn scars from the past couple of years. Juicy dew points
will result in 1000+ J/kg of surface based CAPE for this
afternoon. Surface based instability remains capped so far, and
it's possible that we won't see enough forcing to get surface
based convection going today. Thunderstorms will be capable of
being strong if we are able to tap into this surface based
instability though. Heavy rain will be the primary concern with
anomalously high P-Wats today. Thunderstorms will be moving to
the north at around 30 mph, which decreases the likelihood for
flash flooding and/or debris flows unless we do get a stronger
thunderstorm that happens to move over a high risk burn scar for
flash flooding impacts. That scenario carries a low probability
and too low for an expansion of our flood watch to other areas
that contain burn scars. /SVH

&&

.AVIATION...
18Z TAFS: Widespread showers with embedded thunderstorms will
increase across eastern Washington and the Idaho Panhandle through
this afternoon. Best chances for thunderstorms through 22Z with
moderate rain and possibly some pea sized hail will be around
KEAT, KEPH, KMWH, and KOMK. Then the focus for convection for mid
afternoon into the early evening will shift further east into
extreme eastern Washington and the Idaho Panhandle, including
KLWS, KPUW, KGEG, KSFF, KCOE, KCQV, KDEW, and KSZT airports.
Convection will transition to stratiform rainfall extending from
northeast Oregon into extreme eastern Washington and the Idaho
Panhandle tonight. This will saturated the boundary layer with
widespread low clouds and IFR conditions late tonight into
Saturday. /SVH

&&

.PRELIMINARY POINT TEMPS/POPS...
Spokane        70  50  60  49  66  48 /  70  70  70  30 100  60
Coeur d'Alene  69  51  59  48  63  49 /  80  70  80  40 100  70
Pullman        69  49  58  50  64  47 /  60  70  80  40 100  60
Lewiston       76  55  65  55  71  54 /  70  70  80  50 100  70
Colville       70  50  62  47  64  47 /  80  70  60  30 100  70
Sandpoint      66  51  59  49  61  49 /  80  80  70  40  90  80
Kellogg        68  51  57  49  61  49 /  80  70  80  50 100  80
Moses Lake     74  51  68  51  72  47 /  70  40  30  40  80  20
Wenatchee      71  53  68  54  69  50 /  70  40  20  70  90  30
Omak           71  53  67  53  68  49 /  90  50  40  40 100  40

&&

.OTX WATCHES/WARNINGS/ADVISORIES...
ID...None.
WA...Flood Watch until 10 PM PDT this evening for Lower Garfield and
     Asotin Counties-Northeast Blue Mountains.

&&

Hazardous Weather Outlook
National Weather Service Spokane WA
515 AM PDT Fri Jun 3 2022

IDZ001>004-026-027-WAZ031>038-041-043-044-047>049-041215-
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-
Okanogan Valley-Waterville Plateau-Central Chelan County-
Western Chelan County-Western Okanogan County-
515 AM PDT Fri Jun 3 2022

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

Thunderstorms with heavy rain are expected to develop late morning
and last through the evening. A Flash Flood Watch is in effect
for Southeast WA. More thunderstorms are forecast to move into the
area from Oregon this evening and traverse eastern Washington
overnight. These storms could produce heavy rain and gusty winds.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

Sunday can expect another round of thunderstorms across the
region.

Please refer to our Graphical Hazardous Weather Outlook at
https://weather.gov/erh/ghwo?wfo=otx for the latest information
on potential weather hazards in the region.

Special Weather Statement
National Weather Service Spokane WA
1245 PM PDT Fri Jun 3 2022

WAZ031-032-032015-
Northeast Blue Mountains WA-Lower Garfield and Asotin Counties WA-
1245 PM PDT Fri Jun 3 2022

...A strong thunderstorm will impact portions of central Garfield and
northwestern Asotin Counties through 115 PM PDT...

At 1242 PM PDT, Doppler radar was tracking a strong thunderstorm 11
miles south of Pomeroy, or 16 miles east of Dayton, moving northeast
at 30 mph.

HAZARD...Winds in excess of 30 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Torrential rainfall is also occurring with this storm and
         may lead to localized flooding. Do not drive your vehicle
         through flooded roadways. Gusty winds could knock down tree
         limbs and blow around unsecured objects. Minor damage to
         outdoor objects is possible.

Locations impacted include...
Pomeroy, Peola and Alder Thicket Campground.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4633 11762 4634 11768 4638 11768 4640 11772
      4644 11772 4644 11774 4667 11762 4642 11722
      4622 11761
TIME...MOT...LOC 1942Z 227DEG 27KT 4630 11763

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...30 MPH

LN

Special Weather Statement
National Weather Service Spokane WA
1251 PM PDT Fri Jun 3 2022

WAZ035-038-043-032015-
Upper Columbia Basin WA-Okanogan Valley WA-Okanogan Highlands WA-
1251 PM PDT Fri Jun 3 2022

...A strong thunderstorm will impact portions of northwestern
Lincoln, southwestern Ferry and southeastern Okanogan Counties
through 115 PM PDT...

At 1251 PM PDT, Doppler radar was tracking a strong thunderstorm 18
miles southeast of Nespelem Community, moving north at 25 mph.

HAZARD...Winds in excess of 30 mph and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Keller.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4791 11877 4794 11887 4815 11888 4807 11855
TIME...MOT...LOC 1951Z 199DEG 20KT 4795 11880

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...30 MPH

SVH