Flash Flood Warning 1, NWS Spokane, WA

066 
WGUS76 KOTX 210214
FFSOTX

Flash Flood Statement
National Weather Service Spokane WA
714 PM PDT Sun Jul 20 2025

WAC047-210224-
/O.CAN.KOTX.FF.W.0001.000000T0000Z-250721T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Okanogan WA-
714 PM PDT Sun Jul 20 2025

...FLASH FLOOD WARNING FOR THE CUB CREEK BURN SCAR IS CANCELLED FOR 
CENTRAL OKANOGAN COUNTY...

The heavy rain has ended. Flooding is no longer expected to pose a 
threat.

&&

LAT...LON 4860 12017 4872 12014 4870 12002 4859 11999

$$

SB

Area Forecast Discussion
National Weather Service Spokane WA
401 PM PDT Sun Jul 20 2025

.KEY MESSAGES...

- Temperatures remain in the 70s through Tuesday.

- Shower and thunderstorm chances over the Northern Mountains
  Sunday and expand regionwide Monday and Tuesday.

- Elevated flash flooding potential for burn scars and areas of
  steep terrain. Highest flash flooding potential is on Monday.
  A Flash Flood Watch has been issued for Monday from noon-9pm.

&&

.SYNOPSIS...
Temperatures will remain near to below normal through Tuesday.
Slow moving showers and thunderstorms will impact the northern
mountains this afternoon and evening then become more
widespread on Monday and Tuesday. Heavy rainfall will be the
main concern with these storms. A warming and drying trend will
prevail Wednesday onward as low pressure moves out of the area.

&&

.DISCUSSION...
Rest of Today: Coverage of showers and thunderstorms will increase
across the northern mountains this afternoon and evening as an upper-
level trough deepens over the Pacific Northwest, increasing
instability throughout the atmosphere. Heavy rainfall will be the
primary concern with these storms. Weak winds aloft will mean storms
will be rather slow-moving, increasing the risk for flash flooding
particularly over recent burn scars and areas of steep terrain.
Storms are anticipated to continue through 9-10pm before winding
down for the night. Outside of the northern mountains, conditions
will stay mainly dry with cloud cover increasing from west to east.

Monday: The upper-level low will continue to carve into the region,
further cooling temperatures and bringing another more widespread
round of showers and thunderstorms in the afternoon and evening.
The northern third of the region including the North Cascades,
Okanogan Valley, Colville, Sandpoint, and Bonners Ferry will be
looking at a 60 to 90% chance of showers with a 30 to 50% chance of
embedded thunderstorms. For the southern two-thirds of the region
chances will be slightly lower with a 30 to 50% chance of showers
and a 10 to 30% chance of thunderstorms. Flash flooding concerns
will be greater on Monday than today due to the potential for higher
CAPE values and the likelihood of several heavy-rain-producing storm
cells moving over the same spots in the Cascades where a handful of
moderate to high risk burn scars are located. For the aforementioned
reasons, a Flash Flood Watch has been issued for Chelan and Okanogan
counties from noon to 9pm Monday.

In addition to the northern third of the region, the other area to
watch will be extreme southeastern WA and the Central ID Panhandle
from the Blue Mountains to the Central Panhandle Mountains. For this
area, higher CAPE values and 0-6km shear may allow a few organized
storms to develop capable of producing hail and gusty winds.

Tuesday: Another day of widespread showers and thunderstorms is
anticipated as the upper-level low keeps spinning over the region.
For Tuesday the highest CAPE values shift eastward over northeastern
WA and the ID Panhandle, but chances for convection exist
regionwide.

Wednesday Onward: Heading into the second half of the
week, temperatures will warm back into the 80s and 90s and chances
for precip will dwindle as the low shifts out of the region. Aside
from marginal fire weather concerns with dry conditions and typical
diurnal breeziness, no hazards are anticipated during this period.
/Fewkes

&&

.AVIATION...
00Z TAFS: VFR conditions through the 24 hour period. Convection
will continue over the northern mountains through this evening,
winding down after 04Z. Heavy downpours and isolated lightning
strikes will be the main concerns with local MVFR conditions
under rain cores. Northern terminals including Bonners Ferry,
Colville, Republic, Omak, and Winthrop are looking at a 20-30%
chance for t-storms. Mainly thickening mid and high level clouds
for the Columbia Basin, Palouse, and Spokane-Cd'A area.

FORECAST CONFIDENCE AND/OR ALTERNATE SCENARIOS: High confidence
that VFR conditions will continue at all TAF sites. Low
confidence for t-storms to impact Omak, Republic, Colville, and
Bonners Ferry directly.

&&

.Preliminary Point Temps/PoPs...
Spokane        61  71  56  76  55  83 /  10  30  30  40  20   0
Coeur d'Alene  60  72  56  74  55  83 /  20  50  40  60  30  10
Pullman        52  69  48  75  50  81 /  40  50  30  30  10  10
Lewiston       64  76  62  85  63  91 /  50  60  20  20  10  10
Colville       50  72  46  72  45  81 /  20  70  60  70  40  10
Sandpoint      55  70  51  70  50  78 /  20  60  60  80  50  10
Kellogg        60  68  56  71  56  78 /  30  60  50  60  30  10
Moses Lake     62  75  57  82  57  89 /  10  30  10  20  10   0
Wenatchee      65  76  63  82  63  89 /  20  60  30  40  20   0
Omak           61  79  58  81  56  88 /  20  70  50  60  20   0

&&

.OTX WATCHES/WARNINGS/ADVISORIES...
WA...Flood Watch from Monday afternoon through Monday evening for
     Central Chelan County-Okanogan Highlands-Okanogan Valley-
     Wenatchee Area-Western Chelan County-Western Okanogan
     County.
ID...None.

&&

Special Weather Statement
National Weather Service Spokane WA
324 PM PDT Sun Jul 20 2025

WAZ038-202300-
Okanogan Highlands WA-
324 PM PDT Sun Jul 20 2025

...A strong thunderstorm will impact portions of northeastern Ferry
County through 400 PM PDT...

At 323 PM PDT, Doppler radar was tracking a strong thunderstorm near
Sherman Pass, or 44 miles east of Omak. This storm was nearly
stationary.

HAZARD...Pea size hail.

SOURCE...Radar indicated.

IMPACT...Minor hail damage to outdoor objects is possible.

Locations impacted include...
Sherman Pass.

This includes U.S. Highway 20 in Washington between mile markers 311
and 331.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Heavy rainfall is also occurring with this storm and may lead to
localized flooding or ponding of water roads. Do not drive your
vehicle through flooded roadways.

&&

LAT...LON 4851 11854 4858 11864 4878 11849 4861 11819
TIME...MOT...LOC 2223Z 218DEG 2KT 4859 11857

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...<30 MPH

MC