A cool upper-level trough engulfing much of the western CONUS coupled with sufficient surface heating the afternoon of May 29th supplied enough instability to generate isolated thunderstorms across the Washington Palouse. One of the stronger cells that tracked between Pullman and Colton produced a large rope-like funnel cloud which several trained spotters observed.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS OTX wrote it up.
A cool upper-level trough engulfing much of the western CONUS coupled with sufficient surface heating the afternoon of May 29th supplied enough instability to generate isolated thunderstorms across the Washington Palouse. One of the stronger cells that tracked between Pullman and Colton produced a large rope-like funnel cloud which several trained spotters observed.
The local office's own words before the first event, 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 the first event at May 29, 3:26 PM PST, 0 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SPOKANE WA 426 PM PDT SUN MAY 29 2011 .SYNOPSIS... A SERIES OF WEAK TO MODERATE PACIFIC STORM SYSTEMS WILL MIGRATE THROUGH THE REGION THROUGH THE WEEK...BRINGING COOLER THAN NORMAL TEMPERATURES AND A RISK OF SHOWERS AND THUNDERSTORMS EACH DAY THROUGH FRIDAY. STRONGER SYSTEMS WILL BRING A BETTER CHANCE OF SHOWERS ON TUESDAY AND WEDNESDAY. A DRYING AND WARMING TREND IS POSSIBLE NEXT WEEKEND. && .DISCUSSION... TONIGHT AND MEMORIAL DAY...SATELLITE INDICATES AN UPPER LEVEL CLOSED LOW CIRCULATING OVER THE GREAT BASIN THIS AFTERNOON. MEANWHILE ANOTHER CLOSED LOW CIRCULATION IS FAINTLY VISIBLE APPROACHING THE PACIFIC COAST OUT OF THE GULF OF ALASKA. MOST OF THE FORECAST AREA SITS BETWEEN THESE TWO SYSTEMS...WITH THE SOUTHEASTERN ZONES BEING BRUSHED WITH DEEPER MOISTURE FROM A DEFORMATION REGION ON THE NORTHERN FLANK OF THE GREAT BASIN LOW. REGIONAL RADAR INDICATES DENSEST CONCENTRATION OF AFTERNOON SHOWERS IS DEVELOPING OVER THE SOUTHEAST WHERE AMBIENT AFTERNOON INSTABILITY IS WORKING WITH THIS DEEPER MOISTURE TO PRODUCE SOLIDLY SCATTERED SHOWERS. SOME SHOWERS ARE ALSO DEVELOPING OVER THE REMAINDER OF THE FORECAST AREA...BUT COVERAGE IS LESS DENSE AND IT IS QUESTIONABLE HOW MUCH FURTHER DEVELOPMENT WILL OCCUR BEFORE SUNSET EFFECTIVELY ENDS FURTHER CONVECTIVE ACTIVITY THIS EVENING. THUS A GENERAL EVENING FORECAST OF ISOLATED TO SCATTERED SHOWERS WITH A SMALL THUNDERSTORM THREAT LOOKS GOOD FOR THIS EVENING. OVERNIGHT TONIGHT A GENERAL CLEARING TREND WILL OCCUR OVER MOST OF THE REGION...BUT THE APPROACH OF THE NEXT INCOMING WAVE MAY ALLOW SOME INCREASING CIRRUS PARTICULARLY ACROSS THE CASCADES AND THE BASIN SOUTH OF INTERSTATE 90. FOR MEMORIAL DAY MODEL AGREEMENT IS GOOD AND PLAUSIBLE AGAINST SATELLITE EXTRAPOLATION. THE FORECAST AREA WILL REMAIN BETWEEN THE TWO AFOREMENTIONED WEATHER SYSTEMS...HOWEVER...THE AIR MASS WILL ONCE AGAIN DESTABILIZE DURING THE AFTERNOON. DEPENDING ON MODEL USED...WHICH IS APPARENTLY DUE TO MINOR DIFFS IN SURFACE DEW POINT AND EXPECTED HIGH TEMPS...ANYWHERE FROM 300 TO 500 JOULES OF SB CAPE WILL BE AVAILABLE FOR AFTERNOON CONVECTIVE DEVELOPMENT IN GENERAL OVER THE FORECAST AREA. HOWEVER...IN THIS LOW SHEAR SYNOPTIC DEAD ZONE THERE WILL BE NO SIGNIFICANT DYNAMIC SUPPORT TO TRIGGER CONVECTION OR MAINTAIN ORGANIZED CELLS. THUS ISOLATED TO SCATTERED PULSE TYPE HIT-AND-MISS STORMS ARE EXPECTED...WITH TERRAIN PLAYING A DOMINANT ROLE IN CONVECTIVE INITIATION. WHILE AT ANY PARTICULAR LOCATION MOST OF THE DAY WILL BE DRY WITH AT LEAST PARTLY SUNNY SKIES...JUST ABOUT ANYWHERE IN THE FORECAST AREA WILL BE SUBJECT TO THE RISK OF A BRIEF SHOWER OR STORM...WITH THE BEST CHANCE IN THE MOUNTAIN ZONES. HIGH TEMPERATURES WILL TOP OUT IN THE COMFORTABLE BUT STILL COOLER THAN AVERAGE RANGE. /FUGAZZI MONDAY NIGHT THROUGH WEDNESDAY...THE MODEL SOLUTIONS HAVE TRENDED INTO MUCH CLOSER ALIGNMENT FOR THE MIDDLE SECTION OF THE FORECAST TODAY WHEN COMPARED TO THIS TIME YESTERDAY. AS A RESULT...THE CONFIDENCE IN TWO INTERVALS OF FAIRLY WET CONDITIONS ON TUESDAY AND AGAIN ON WEDNESDAY HAS BECOME FAIRLY HIGH. IN ADDITION...CONFIDENCE IN A CONTINUATION OF GENERALLY BELOW NORMAL TEMPERATURES...EXCEPT IN THE VALLEY LOCATIONS IN THE FAR NORTHERN ZONES ON TUESDAY...HAS INCREASED AS WELL. BY MONDAY NIGHT...SHORT WAVE RIDGING WILL BE INCREASING ALONG THE IDAHO PANHANDLE BETWEEN A SYSTEM DEPARTING THE FRONT RANGE OF THE ROCKIES AND A SECOND SYSTEM THAT SHOULD THEN BE DIGGING DOWN THE OREGON COAST. HOWEVER...MID-LEVEL COOLING IN ASSOCIATION WITH THE SYSTEM OFF SHORE COMBINED WITH LOW LEVEL WARMING DUE TO GENERALLY SOUTHERLY FLOW IN THE LOW LEVELS WILL ALLOW THE ATMOSPHERE TO DESTABILIZE IN THE NORTH CASCADES...OKANOGAN VALLEY...AND OKANOGAN HIGHLANDS THE MOST THROUGH MONDAY EVENING. EVEN ACROSS THE BASIN AND SPOKANE AREAS...A RUMBLE OF THUNDER IS NOT OUT OF THE QUESTION. HOWEVER...THINGS WILL STABILIZE QUICKLY OVERNIGHT...WITH MOST AREAS REMAINING DRY FOR THE OVERNIGHT HOURS. THE FIRST SYSTEM MOVES IN ON TUESDAY...WITH PRESSURE GRADIENT DRIVEN EASTERLY FLOW INTO THE CASCADES. THIS COMBINED WITH A WELL- DEFINED SOUTH TO NORTH MOVING WARM FRONT AND ITS ASSOCIATED LOW- LEVEL DEFORMATION WILL MAKE RAIN LIKELY ALMOST EVERYWHERE BY AFTERNOON. QPF AMOUNTS DUE TO UPSLOPE ENHANCEMENT WILL BE HIGHEST FROM WENATCHEE TOWARD WINTHROP...WHERE AS MUCH AS HALF OF AN INCH IS POSSIBLE...WHILE OTHER AREAS SHOULD GENERALLY RECEIVE LESS THAN ONE QUARTER OF AN INCH. AHEAD OF THE WARM FRONT...SOME SUN IS QUITE LIKELY ACROSS THE NORTHERN ZONES DURING THE FIRST HALF OF THE DAY TUESDAY. THIS COMBINED WITH SURFACE CAPES FROM THE GFS OF 500-800 J/KG AND MUCAPES OF UP TO 1400 J/KG ALONG WITH SHEAR OF 20-30 KTS SEEMS LIKELY TO MAKE THE BEST CHANCE FOR ANY ENHANCED THUNDER DEVELOPMENT FROM WINTHROP TO COLVILLE TO KELLOGG...THOUGH A GARDEN VARIETY THUNDERSTORM IS POSSIBLE ANYWHERE GIVEN WIDESPREAD WEAK INSTABILITY. THE WARM FRONT PUSHES NORTH OF THE AREA TUESDAY NIGHT WITH SOME LIMITED DRYING ACROSS THE CWA BEHIND IT. HOWEVER...BY WEDNESDAY...THE MAIN MID-LEVEL 500 MB LOW SHIFTS INTO SOUTH CENTRAL WASHINGTON PER THE MODEL CONSENSUS. THERE IS VERY GOOD AGREEMENT ON THIS. WITH THIS SHIFT...MID-LEVEL TEMPERATURES COOL INTO THE -23 TO -25C RANGE AND 1000-700 MB MUCAPE VALUES PUSH 1000 J/KG ACROSS THE EASTERN ZONES. IN ADDITION...STRONG 700-500 MB DEFORMATION EXISTS AROUND THE NORTHERN PERIPHERY OF THE MID-LEVEL LOW. THIS IN CONCERT WILL WEAK UPPER LEVEL FLOW AND EASTERLY LOW LEVEL FLOW COULD ALLOW FOR SOME HEAVY SHOWERS THAT MOVE VERY LITTLE DURING THE AFTERNOON HOURS...PARTICULARLY IN THE EAST SLOPES OF THE CASCADES. QPF AMOUNTS HERE COULD AGAIN BE QUITE HIGH IN GENERAL...WITH ANYWHERE THAT SITS UNDER A SHOWER BEING FAIRLY IMPRESSIVE AS WELL. /FRIES WEDNESDAY NIGHT THROUGH SUNDAY...THE INLAND NORTHWEST REMAINS IN AN ACTIVE PATTERN...BEFORE A RELATIVE LULL BY NEXT WEEKEND. TEMPERATURES ARE EXPECTED TO REMAIN BELOW NORMAL THROUGH FRIDAY...BEFORE MODERATING CLOSER TO OR SLIGHT ABOVE NORMAL. BETWEEN WEDNESDAY NIGHT AND FRIDAY AN UPPER LOW MIGRATES FROM THE COAST TOWARD THE NORTHERN ROCKIES/UPPER GREAT BASIN...AND EVENTUALLY INTO THE NORTHERN PLAINS. VORTICITY MAXIMA PIVOTING AROUND THE LOW...IN CONJUNCTION WITH A DEFORMATION AXIS NEAR THE EASTERN CWA AND SOME AFTERNOON INSTABILITY...WILL BRING A THREAT OF SHOWERS THROUGH FRIDAY. THE HIGHEST RISK WILL BE TOWARD THE EASTERN THIRD OF WASHINGTON AND NORTHERN IDAHO. GUIDANCE IS NOT SHOWING AS MUCH INSTABILITY AS THEY HAVE BEEN...BUT IN GENERAL THE PRECIPITATION THREAT WILL BE HIGHEST IN THE AFTERNOON/EVENING HOURS. THUNDERSTORMS WILL BE A RISK WEDNESDAY AND EVENING AND THURSDAY AFTERNOON/EVENING. AT THE SAME TIME MODELS DEPICT ANOTHER SHORTWAVE BREAKING SOUTH FROM THE GULF OF ALASKA AND CARVING OUT A LOW THAT DROPS DOWN THE PACIFIC COAST BY SATURDAY. HOWEVER BY THIS TIME MODELS START TO DIVERGE OVER HOW FAR SOUTH IT TRACKS...AS WELL AS WHERE AND HOW QUICKLY IT COMES INLAND. SOME SOLUTIONS ARE FURTHER NORTH AND QUICKER TO BRING THE LOW INLAND...DIRECTLY OVER OR JUST SOUTH OF THE PACIFIC NORTHWEST...WITH HIGHER PRECIPITATION CHANCES FOR THE REGION (MOST NOTABLY SOME RUNS OF THE ECMWF). OTHER SOLUTIONS KEEP IT FURTHER SOUTH. AT THIS TIME MORE SOLUTIONS (INCLUDING THE GFS/DGEX/GEM/GFS ENSEMBLE) KEEP IT FURTHER SOUTH AND THIS WILL BE PREFERRED. THIS LEAVES THE INLAND NORTHWEST IN A WEST TO SOUTHWEST FLOW WITH MINOR IMPULSES SLIPPING BY...IN A COMPARATIVELY DRIER ATMOSPHERE. THE FORECAST WILL CONTINUE TO INDICATE A RISK FOR SHOWERS AROUND THE NORTH AND EASTERN MOUNTAINS...ESPECIALLY IN THE AFTERNOON HOURS NEXT WEEKEND. OTHERWISE RELATIVELY QUIETER WEATHER CONDITIONS ARE FORECAST. HOWEVER GIVEN IT IS STILL SEVERAL DAYS OUT...AN EYE WILL BE KEPT ON THE MODELS FOR TRENDS THAT MAY SUGGEST THAT NEXT LOW WILL MOVE MORE DIRECTLY INTO THE REGION. /JCOTE && .AVIATION... 00Z TAFS...EVENING SCATTERED SHOWERS AND THUNDERSTORMS WILL DECREASE AFTER SUNSET AND END OVER THE REGION BY 04Z TONIGHT. GENERALLY PARTLY CLOUDY VFR CONDITIONS ARE EXPECTED OVERNIGHT WITH MID LEVEL CONVECTIVE DEBRIS CLOUDS AND CIRRUS LAYERS. PATCHY FOG IS POSSIBLE AROUND SUNRISE IN NORTHERN MOUNTAIN VALLEYS...BUT THIS WILL BURN OFF BY 16Z. ON MONDAY THE AIR MASS WILL DESTABILIZE AGAIN WITH ISOLATED TO WIDELY SCATTERED THUNDERSTORMS DEVELOPING. BEST CHANCE OF THUNDERSTORMS WILL EXIST AT THE KPUW AND KLWS TAF SITES AND OVER THE CASCADES...BUT A BRIEF THUNDERSTORM IS POSSIBLE JUST ABOUT ANYWHERE IN THE FORECAST AREA. OUTSIDE OF THUNDERSTORM CORES VFR CONDITIONS EXPECTED AT ALL TAF SITES. /MJF && .PRELIMINARY POINT TEMPS/POPS... SPOKANE 42 65 44 66 47 62 / 20 20 30 60 40 60 COEUR D'ALENE 37 65 41 69 45 64 / 30 20 30 60 40 60 PULLMAN 40 60 42 65 46 61 / 40 30 30 60 40 50 LEWISTON 46 67 45 69 50 66 / 40 20 30 60 40 60 COLVILLE 39 71 42 74 45 68 / 20 20 30 60 50 70 SANDPOINT 39 65 41 69 44 64 / 20 20 30 60 40 70 KELLOGG 36 59 38 66 42 61 / 40 30 40 60 40 60 MOSES LAKE 44 70 45 67 47 66 / 20 20 50 70 40 70 WENATCHEE 47 70 49 65 49 64 / 20 30 50 80 30 60 OMAK 44 71 46 71 49 68 / 20 30 50 80 40 80 && .OTX WATCHES/WARNINGS/ADVISORIES... ID...NONE. WA...NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SPOKANE WA 549 AM PDT SUN MAY 29 2011 IDZ001>004-WAZ036>038-042-043-301300- NORTHERN PANHANDLE-COEUR D'ALENE AREA-IDAHO PALOUSE- CENTRAL PANHANDLE MOUNTAINS-SPOKANE AREA-NORTHEAST MOUNTAINS- OKANOGAN HIGHLANDS-EAST SLOPES NORTHERN CASCADES-OKANOGAN VALLEY- 549 AM PDT SUN MAY 29 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH IDAHO... NORTH CENTRAL WASHINGTON AND NORTHEAST WASHINGTON. .DAY ONE...TODAY AND TONIGHT RIVERS WILL REMAIN HIGH TODAY AND TONIGHT WITH SEVERAL MAIN STEM RIVERS EXPECTED TO REMAIN ABOVE FLOOD STAGE. SMALL STREAM RIVER FLOODING WILL REMAIN POSSIBLE IN STEVENS AND FERRY COUNTIES FROM HEAVY RAINFALL THAT FELL THURSDAY. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY THE SPRING MELT WILL CONTINUE OVER THE MOUNTAINS OF THE INLAND NORTHWEST...AND RIVERS WILL REMAIN HIGH. ADDITIONAL SHOWER ACTIVITY NEXT WEEK WILL ALSO CONTRIBUTE TO RIVER RISES. IDZ026-027-WAZ031>035-041-044-301300- LEWISTON AREA-LEWIS AND SOUTHERN NEZ PERCE COUNTIES- NORTHEAST BLUE MOUNTAINS-LOWER GARFIELD AND ASOTIN COUNTIES- WASHINGTON PALOUSE-MOSES LAKE AREA-UPPER COLUMBIA BASIN- WENATCHEE AREA-WATERVILLE PLATEAU- 549 AM PDT SUN MAY 29 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL IDAHO...CENTRAL WASHINGTON...EAST CENTRAL WASHINGTON...NORTH CENTRAL WASHINGTON AND SOUTHEAST WASHINGTON. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SPOKANE WA
1143 AM PDT SUN MAY 29 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1200 PM FLOOD 8 SE NORTHPORT 48.85N 117.63W
05/28/2011 STEVENS WA TRAINED SPOTTER
DEEP LAKE IN STEVENS COUNTY FLOODED OVER ON TO DEEP LAKE
BOUNDARY ROAD ON THE NORTH END OF THE LAKE. SIX INCHES OF
WATER WAS REPORTEDLY OVER THE ROAD AND HAS SINCE DROPPED
BACK TO WITHIN ITS BANKS. SINCE MAY 26...SMALL CREEKS
INTO THE LAKE HAVE POORED OVER THEIR BANKS AND FLOODED
FIELDS AND DRIVEWAYS LEADING TO HOMES IN THE AREA. NO
PROPERTY DAMAGE HAS BEEN REPORTED.
&&
VAN HORNSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPOKANE WA
244 PM PDT SUN MAY 29 2011
WAZ033-292230-
WHITMAN WA-
244 PM PDT SUN MAY 29 2011
THE NATIONAL WEATHER SERVICE IN SPOKANE HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY FOR...
SOUTHWESTERN WHITMAN COUNTY IN EASTERN WASHINGTON
UNTIL 330 PM PDT
AT 240 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 9 MILES SOUTHWEST OF LA CROSSE..MOVING SOUTHWEST
AT 15 MPH.
HAIL UP TO THE SIZE OF PENNIES IS EXPECTED WITH THIS STORM...ALONG
WITH HEAVY RAIN.
LOCATIONS IMPACTED INCLUDE...
RURAL SOUTHWESTERN WHITMAN COUNTY...
WEAK ROTATION WAS INDICATED ON RADAR WITH THIS STORM. THIS STORM
MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND TV
STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.
LAT...LON 4658 11822 4662 11821 4664 11823 4673 11825
4678 11807 4677 11805 4679 11803 4670 11793
4655 11817
TIME...MOT...LOC 2144Z 062DEG 11KT 4672 11805
FRIESSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPOKANE WA
344 PM PDT SUN MAY 29 2011
IDZ003-026-WAZ031>033-292345-
WHITMAN WA-NEZ PERCE ID-LATAH ID-GARFIELD WA-ASOTIN WA-
344 PM PDT SUN MAY 29 2011
THE NATIONAL WEATHER SERVICE IN SPOKANE HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY FOR...
SOUTHEASTERN WHITMAN COUNTY IN EASTERN WASHINGTON
WEST CENTRAL NEZ PERCE COUNTY IN NORTH CENTRAL IDAHO
SOUTHWESTERN LATAH COUNTY IN THE PANHANDLE OF IDAHO
ASOTIN COUNTY IN SOUTHEAST WASHINGTON
GARFIELD COUNTY IN SOUTHEAST WASHINGTON
UNTIL 445 PM PDT
AT 336 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM SOUTH OF PULLMAN NEAR COLTON AND UNIONTOWN THIS
STORM WAS MOVING TO THE SOUTHWEST AT 15 MPH.
HAIL UP TO THE SIZE OF PENNIES IS EXPECTED WITH THIS STORM.
LOCATIONS IMPACTED INCLUDE...
UNIONTOWN...
WEAK ROTATION WAS INDICATED ON RADAR WITH THIS STORM. THIS STORM
MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND TV
STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.
IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.
LAT...LON 4603 11761 4633 11762 4634 11768 4646 11775
4648 11787 4659 11786 4679 11714 4644 11681
4632 11694 4632 11703 4630 11698 4627 11698
4599 11725 4599 11755
TIME...MOT...LOC 2242Z 180DEG 0KT 4653 11709
RPSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPOKANE WA
355 PM PDT SUN MAY 29 2011
IDZ026-027-300000-
LEWIS ID-NEZ PERCE ID-
355 PM PDT SUN MAY 29 2011
THE NATIONAL WEATHER SERVICE IN SPOKANE HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY FOR...
EAST CENTRAL NEZ PERCE COUNTY IN NORTH CENTRAL IDAHO
LEWIS COUNTY IN NORTH CENTRAL IDAHO
UNTIL 500 PM PDT
AT 342 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR OROFINO..MOVING SOUTHWEST AT 20 MPH.
HAIL UP TO THE SIZE OF PENNIES IS EXPECTED WITH THIS STORM.
WEAK ROTATION WAS INDICATED ON RADAR WITH THIS STORM. THIS STORM
MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND TV
STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.
LOCATIONS IMPACTED INCLUDE...
CRAIGMONT...
CULDESAC...
WINCHESTER...
IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.
LAT...LON 4654 11678 4654 11644 4651 11644 4650 11638
4642 11630 4642 11620 4634 11613 4617 11636
4620 11642 4619 11645 4613 11647 4611 11650
4608 11650 4605 11654
TIME...MOT...LOC 2253Z 058DEG 17KT 4639 11628
RPSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPOKANE WA
426 PM PDT SUN MAY 29 2011
WAZ033-300030-
WHITMAN WA-SPOKANE WA-
426 PM PDT SUN MAY 29 2011
THE NATIONAL WEATHER SERVICE IN SPOKANE HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY FOR...
SOUTH CENTRAL SPOKANE COUNTY IN EASTERN WASHINGTON
NORTHEASTERN WHITMAN COUNTY IN EASTERN WASHINGTON
UNTIL 530 PM PDT
AT 418 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 7 MILES NORTHEAST OF OAKESDALE..MOVING SOUTHWEST
AT 15 MPH.
HAIL UP TO THE SIZE OF PENNIES IS EXPECTED WITH THIS STORM.
LOCATIONS IMPACTED INCLUDE...
OAKESDALE AND ROSALIA...
WEAK ROTATION HAS OCCURRED WITH PAST STORMS IN THE AREA TODAY.
THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.
IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.
LAT...LON 4724 11785 4726 11761 4728 11757 4733 11717
4722 11703 4713 11704 4675 11729
TIME...MOT...LOC 2325Z 049DEG 13KT 4720 11719
RPThe Spokane radar (KOTX), 121 km away, was scanning. The volume nearest the first event began at 23:27 UTC.
1 funnel cloud. Local standard time, as filed.
Several trained spotters viewed a large rope-like funnel cloud attached to a storm that moved from approximately five miles north of Colton toward the town of Pullman.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Washington in 2011Every state in 2011This day in weather historyWarnings in Washington, May 2011
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 303549.