River Flood Warning 15, NWS Spokane, WA

980 
WGUS86 KOTX 170123
FLSOTX
FLOOD STATEMENT
NATIONAL WEATHER SERVICE SPOKANE, WA
623 PM PDT WED MAY 16 2012

...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS AND LAKES IN 
WASHINGTON...

  OKANOGAN RIVER NEAR TONASKET AFFECTING OKANOGAN COUNTY

...SEVERAL DAYS OF VERY WARM WEATHER HAVE PRODUCED RAPID RUN OFF OF
MOUNTAIN SNOW INTO THE OKANOGAN RIVER BASIN. THE RIVER WILL LIKELY
GO ABOVE FLOOD STAGE THURSDAY MORNING AND CREST SATURDAY ABOVE THE 
MODERATE FLOOD CATEGORY. FORTUNATELY...COOLER TEMPERATURES THURSDAY
THROUGH NEXT WEEK WILL SLOW THE RATE OF MELTING SNOW IN THE MOUNTAINS...
BUT THE RIVER WILL PROBABLY REMAIN AT OR ABOVE FLOOD STAGE FOR THE 
NEXT 7 TO 10 DAYS...


PRECAUTIONARY/PREPAREDNESS ACTIONS...

ADDITIONAL INFORMATION IS AVAILABLE AT:
HTTP://WATER.WEATHER.GOV/AHPS2/INDEX.PHP?WFO=OTX

THE SPRING SNOW MELT RUNOFF IN LAKES AND RIVERS IS DANGEROUSLY COLD 
AND CAN BE LIFE THREATENING FOR THOSE THAT COME INTO CONTACT WITH THE
WATER. TAKE APPROPRIATE PRECAUTIONS.

BE AWARE OF LARGE DEBRIS IN THE RIVER. HIGH WATER LEVELS CAN PUSH 
LOGS AND OTHER LARGE DEBRIS INTO THE RIVER...INCREASING THE DANGER TO
PEOPLE AND BOATS.

NEVER DRIVE CARS...TRUCKS OR SPORT UTILITY VEHICLES THROUGH FLOODED 
AREAS. THE WATER MAY BE TOO DEEP TO ALLOW FOR SAFE PASSAGE.AS LITTLE 
AS ONE FOOT OF WATER ON THE ROAD CAN MOVE MOST VEHICLES OFF THE ROAD.

&&

WAC047-180123-
/O.EXT.KOTX.FL.W.0015.120517T1330Z-000000T0000Z/
/TONW1.2.ER.120517T1330Z.120520T0000Z.000000T0000Z.NO/
623 PM PDT WED MAY 16 2012

...FLOOD WARNING REMAINS IN EFFECT UNTIL FURTHER NOTICE...
 THE FLOOD WARNING CONTINUES FOR
  THE OKANOGAN RIVER NEAR TONASKET.
* FROM THURSDAY MORNING UNTIL FURTHER NOTICE.
* AT  5:15 PM WEDNESDAY THE STAGE WAS 14.17 FEET. 
* FLOOD STAGE IS 15.00 FEET.
* MODERATE FLOODING IS FORECAST.
* FORECAST...RISE ABOVE FLOOD STAGE TOMORROW MORNING AND CREST NEAR 17.5 
  FEET SATURDAY AFTERNOON. THE RIVER WILL LIKELY FALL SUNDAY...MONDAY...
  AND TUESDAY...BUT REMAIN ABOVE THE FLOOD STAGE LEVEL OF 15 FEET FOR 
  THE NEXT 7 TO 10 DAYS.
* AT 17.5 FEET...WATER WILL BE BEHIND THE LEVEE, FLOODING THE 
  MOTOCROSS TRACK DOWNSTREAM OF THE CITY OF OKANOGAN.
* AT 17.0 FEET...LOW LYING FIELDS AND PASTURE LAND IN THE FLOOD PLAIN 
  ALONG THE OKANOGAN RIVER VALLEY, FROM OROVILLE TO OKANOGAN, WILL BE
  FLOODED. 
* AT 15.0 FEET...MINOR FLOODING OF LOW-LYING AREAS IS LIKELY BETWEEN 
  OROVILLE AND TONASKET.

$$

670 
WGUS86 KOTX 171709
FLSOTX
FLOOD STATEMENT
NATIONAL WEATHER SERVICE SPOKANE, WA
1009 AM PDT THU MAY 17 2012

...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS AND LAKES IN 
WASHINGTON...

  OKANOGAN RIVER NEAR TONASKET AFFECTING OKANOGAN COUNTY
COOLER TEMPERATURES OVER THE REGION HAVE SLOWED THE SNOWMELT
FEEDING THE OKANOGAN RIVER. CONSEQUENTLY...THE RIVER IS NO
LONGER TO REACH MODERATE FLOOD STAGE. HOWEVER...MINOR FLOODING 
IS STILL EXPECTED LATER TODAY AND CONTINUE THROUGH THE 
WEEKEND. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

ADDITIONAL INFORMATION IS AVAILABLE AT:
HTTP://WATER.WEATHER.GOV/AHPS2/INDEX.PHP?WFO=OTX

THE SPRING SNOW MELT RUNOFF IN LAKES AND RIVERS IS DANGEROUSLY COLD 
AND CAN BE LIFE THREATENING FOR THOSE THAT COME INTO CONTACT WITH THE
WATER. TAKE APPROPRIATE PRECAUTIONS.

BE AWARE OF LARGE DEBRIS IN THE RIVER. HIGH WATER LEVELS CAN PUSH 
LOGS AND OTHER LARGE DEBRIS INTO THE RIVER...INCREASING THE DANGER TO
PEOPLE AND BOATS.

NEVER DRIVE CARS...TRUCKS OR SPORT UTILITY VEHICLES THROUGH FLOODED 
AREAS. THE WATER MAY BE TOO DEEP TO ALLOW FOR SAFE PASSAGE.AS LITTLE 
AS ONE FOOT OF WATER ON THE ROAD CAN MOVE MOST VEHICLES OFF THE ROAD.

&&

WAC047-181709-
/O.EXT.KOTX.FL.W.0015.000000T0000Z-120520T1627Z/
/TONW1.1.ER.120517T2347Z.120519T0600Z.120520T0427Z.NO/
1009 AM PDT THU MAY 17 2012

...FLOOD WARNING NOW IN EFFECT UNTIL SUNDAY MORNING...
 THE FLOOD WARNING CONTINUES FOR
  THE OKANOGAN RIVER NEAR TONASKET.
* UNTIL SUNDAY MORNING.
* AT  9:15 AM THURSDAY THE STAGE WAS 14.76 FEET. 
* FLOOD STAGE IS 15.00 FEET.
* MINOR FLOODING IS FORECAST.
* FORECAST...RISE ABOVE FLOOD STAGE BY LATE THIS AFTERNOON AND 
  CONTINUE TO RISE TO NEAR  15.5 FEET BY TOMORROW LATE EVENING. THE 
  RIVER WILL FALL BELOW FLOOD STAGE EARLY SUNDAY MORNING.
* AT 15.0 FEET...MINOR FLOODING OF LOW-LYING AREAS IS LIKELY BETWEEN 
  OROVILLE AND TONASKET.

$$

741 
WGUS86 KOTX 181500
FLSOTX
FLOOD STATEMENT
NATIONAL WEATHER SERVICE SPOKANE, WA
800 AM PDT FRI MAY 18 2012

...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS AND LAKES IN 
WASHINGTON...

  OKANOGAN RIVER NEAR TONASKET AFFECTING OKANOGAN COUNTY

...COOLER TEMPERATURES OVER THE REGION HAVE SLOWED THE SNOWMELT
FEEDING THE OKANOGAN RIVER. HOWEVER THE RIVER IS EXPECTED TO 
REMAIN IN MINOR FLOOD STAGE FOR AT LEAST PARTOF THE WEEKEND. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

ADDITIONAL INFORMATION IS AVAILABLE AT:
HTTP://WATER.WEATHER.GOV/AHPS2/INDEX.PHP?WFO=OTX

THE SPRING SNOW MELT RUNOFF IN LAKES AND RIVERS IS DANGEROUSLY COLD 
AND CAN BE LIFE THREATENING FOR THOSE THAT COME INTO CONTACT WITH THE
WATER. TAKE APPROPRIATE PRECAUTIONS.

BE AWARE OF LARGE DEBRIS IN THE RIVER. HIGH WATER LEVELS CAN PUSH 
LOGS AND OTHER LARGE DEBRIS INTO THE RIVER...INCREASING THE DANGER TO
PEOPLE AND BOATS.

NEVER DRIVE CARS...TRUCKS OR SPORT UTILITY VEHICLES THROUGH FLOODED 
AREAS. THE WATER MAY BE TOO DEEP TO ALLOW FOR SAFE PASSAGE.AS LITTLE 
AS ONE FOOT OF WATER ON THE ROAD CAN MOVE MOST VEHICLES OFF THE ROAD.

&&

WAC047-191500-
/O.EXT.KOTX.FL.W.0015.000000T0000Z-120520T1200Z/
/TONW1.1.ER.120518T0915Z.120519T0000Z.120520T0000Z.NO/
800 AM PDT FRI MAY 18 2012

...FLOOD WARNING NOW IN EFFECT UNTIL LATE SATURDAY NIGHT...
 THE FLOOD WARNING CONTINUES FOR
  THE OKANOGAN RIVER NEAR TONASKET.
* UNTIL LATE SATURDAY NIGHT.
* AT  7:15 AM FRIDAY THE STAGE WAS 15.01 FEET. 
* FLOOD STAGE IS 15.00 FEET.
* MINOR FLOODING IS OCCURRING AND MINOR FLOODING IS FORECAST.
* FORECAST...THE RIVER WILL CONTINUE RISING TO NEAR  15.3 FEET BY 
  LATE THIS AFTERNOON. THE RIVER WILL FALL BELOW FLOOD STAGE TOMORROW
  AFTERNOON.
* AT 15.0 FEET...MINOR FLOODING OF LOW-LYING AREAS IS LIKELY BETWEEN 
  OROVILLE AND TONASKET.

$$

338 
WGUS86 KOTX 182311
FLSOTX
FLOOD STATEMENT
NATIONAL WEATHER SERVICE SPOKANE, WA
411 PM PDT FRI MAY 18 2012

...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS AND LAKES IN 
WASHINGTON...

  OKANOGAN RIVER NEAR TONASKET AFFECTING OKANOGAN COUNTY

...COOLER TEMPERATURES OVER THE REGION HAVE SLOWED THE SNOWMELT
FEEDING THE OKANOGAN RIVER. THE RIVER CRESTED FRIDAY AFTERNOON AT THE 
FLOOD STAGE LEVEL OF 15.0 FEET AND WILL FALL BELOW FLOOD STAGE BY
SATURDAY MORNING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

ADDITIONAL INFORMATION IS AVAILABLE AT:
HTTP://WATER.WEATHER.GOV/AHPS2/INDEX.PHP?WFO=OTX

THE SPRING SNOW MELT RUNOFF IN LAKES AND RIVERS IS DANGEROUSLY COLD 
AND CAN BE LIFE THREATENING FOR THOSE THAT COME INTO CONTACT WITH THE
WATER. TAKE APPROPRIATE PRECAUTIONS.

BE AWARE OF LARGE DEBRIS IN THE RIVER. HIGH WATER LEVELS CAN PUSH 
LOGS AND OTHER LARGE DEBRIS INTO THE RIVER...INCREASING THE DANGER TO
PEOPLE AND BOATS.

NEVER DRIVE CARS...TRUCKS OR SPORT UTILITY VEHICLES THROUGH FLOODED 
AREAS. THE WATER MAY BE TOO DEEP TO ALLOW FOR SAFE PASSAGE.AS LITTLE 
AS ONE FOOT OF WATER ON THE ROAD CAN MOVE MOST VEHICLES OFF THE ROAD.

&&

WAC047-191246-
/O.EXT.KOTX.FL.W.0015.000000T0000Z-120519T1246Z/
/TONW1.1.ER.120518T0915Z.120518T2015Z.120519T0046Z.NO/
411 PM PDT FRI MAY 18 2012

...FLOOD WARNING NOW IN EFFECT UNTIL LATE TONIGHT...
 THE FLOOD WARNING CONTINUES FOR
  THE OKANOGAN RIVER NEAR TONASKET.
* UNTIL LATE TONIGHT.
* AT  3:15 PM FRIDAY THE STAGE WAS 15.00 FEET. 
* FLOOD STAGE IS 15.00 FEET.
* MINOR FLOODING IS OCCURRING AND MINOR FLOODING IS FORECAST.
* FORECAST...THE RIVER WILL SLOWLY FALL TONIGHT...FALLING TO BELOW
  FLOOD STAGE BY SATURDAY MORNING.
* AT 15.0 FEET...MINOR FLOODING OF LOW-LYING AREAS IS LIKELY BETWEEN 
  OROVILLE AND TONASKET.

$$

314 
WGUS86 KOTX 191226
FLSOTX
FLOOD STATEMENT
NATIONAL WEATHER SERVICE SPOKANE, WA
526 AM PDT SAT MAY 19 2012

...THE FLOOD WARNING IS CANCELLED FOR THE FOLLOWING RIVERS AND LAKES 
IN WASHINGTON...

  OKANOGAN RIVER NEAR TONASKET AFFECTING OKANOGAN COUNTY

&&

WAC047-191256-
/O.CAN.KOTX.FL.W.0015.000000T0000Z-120519T1246Z/
/TONW1.1.ER.120518T0915Z.120518T2015Z.120519T0100Z.NO/
526 AM PDT SAT MAY 19 2012

THE FLOOD WARNING IS CANCELLED FOR
  THE OKANOGAN RIVER NEAR TONASKET.
* AT  5:15 AM SATURDAY THE STAGE WAS 14.85 FEET. 
* FLOOD STAGE IS 15.00 FEET.
* FELL BELOW FLOOD STAGE AT  6:00 PM FRIDAY.
* FORECAST...THE RIVER WILL CONTINUE TO FALL TO 14.3 FEET BY EARLY 
  SUNDAY.

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SPOKANE WA
432 AM PDT Wed May 16 2012

.SYNOPSIS...
A gradual cool down and breezy winds are expected Today as high
pressure weakens and a series of weather disturbances moves
through the region for the remainder of the week. By Thursday and
Friday, there is a threat of showers and thunderstorms to mainly
North Idaho. High pressure and a warm-up is returning for the
weekend, though this will be short-lived as cloudy conditions
return Monday. This will be followed by a much wetter cold front
for Tuesday and Wednesday. This early work week pattern also
favors gusty west winds and much cooler temperatures closer to
seasonable normals.

&&

.DISCUSSION...

Today through Thursday: The Pacific Northwest will remain
in between two systems for the next 24 hours. One closed low is in
northern BC, while the other is in southern Nevada. For today
temperatures will average 8 to 12 degrees cooler than yesterday,
but still be above average for this time of the year. Mid and high
level thin clouds will transverse from the west through the day.
Winds will increase during the late morning and early afternoon
hours and become breezy in the afternoon and early evening as a
surface pressure gradient sets up between high pressure in the
eastern Pacific and low pressure on the east side of the divide.
Tonight we remain dry with temperatures around average for this
time of the year. Winds will decrease in the evening and overnight
hours. The only exciting 'weather' worth discussing is Thursday
the models are all showing a wave moving down from the backside of
the low in Canada along the BC coast and approaching Washington by
late Thursday afternoon. The GFS appears to be the strongest with
this wave. Both the NAM and ECMWF have started to trend toward the
GFS in strength and placement. Even though this appears to be a
decently strong wave, there is no good moisture tap associated
with it. All the moisture appears to be confined between 6500 and
10000 ft with lots of dry air at the surface to overcome from the last
few warm days. There is some marginal instability across the
northern ID panhandle Thursday afternoon. So, kept the best chance
of showers across extreme northeast WA and the ID Panhandle, with
a slight chance of thunder for the northern ID panhandle possible.
Daytime temperatures will continue their downward trend, but be
about average for this time of the year. /Nisbet

Thurs Nt through Tues: Model guidance is continuing with the trend of
driving a cold front through the region a bit quicker for Thurs Nt,
putting all of Ern Wa and some of N Id under the post frontal dry
slot that wedges its way across the Cascades and into the Columbia
Basin. This will put a large part of the region under clearing
skies between the cold front to the east and the cooler and much
more unstable showery regime in Srn BC. As the upper trof axis
translates east, this unstable region accompanying the vort max
will clip N/NE Wa and the N Id Panhandle Thurs Nt and Fri. The
conditionally unstable steep mid-level lapse rates accompanying
this vort max should produce mainly afternoon mtn showers Fri for
NE Wa and the N Id Panhandle. Isolated thunder is possible based
on the latest soundings showing a marginally favorable environment
based on CAPE layer depth and LFC to EL temps. For the Sat to Tue
time frame, the various model guidance shows inconsistencies (not
surprising 5-6 days out) concerning the timing of a potentially
wet and much cooler wx regime Mon into late Tues. However, the GFS
and ECMWF are more in line with pcpn amnts with the heaviest pcpn
over N Id Tues compared to their big differences in the previous
few runs. Because of this, we raised pcpn chances some Mon and
Tues and cooled afternoon high temps as well. bz

&&

.AVIATION...
12Z TAFS: Occasional high clouds will move through the area
through 04z Thursday.  Wind/Wind gusts will also increase btwn
18-21z as low level instability increases...with gusty winds
decreasing near 03z Thursday as the lower atmosphere begins
to stabilize with the setting sun.

&&

.PRELIMINARY POINT TEMPS/POPS...
Spokane        76  46  67  41  64  39 /   0   0   0  10  10   0
Coeur d'Alene  75  45  67  40  63  36 /   0   0   0  10  10   0
Pullman        72  43  64  39  61  34 /   0   0   0  10   0   0
Lewiston       80  49  70  44  67  41 /   0   0  10  10   0   0
Colville       82  45  73  42  70  37 /   0  10  10  20  20  10
Sandpoint      74  43  66  38  61  33 /   0   0  10  20  30  20
Kellogg        72  44  63  39  59  36 /   0   0  10  20  20  10
Moses Lake     80  47  74  42  72  40 /   0   0   0   0   0   0
Wenatchee      77  48  71  44  70  44 /   0   0   0   0   0   0
Omak           79  46  71  40  70  38 /   0   0   0  10  10   0

&&

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