Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL7
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 237
NWS Storm Prediction Center Norman OK
415 PM PDT Sat May 30 2020
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
The Idaho Panhandle
Central and eastern Washington
* Effective this Saturday afternoon and evening from 415 PM until
1100 PM PDT.
* Primary threats include...
Scattered damaging winds and isolated significant gusts to 80
mph likely
Scattered large hail and isolated very large hail events to 2
inches in diameter possible
A tornado or two possible
SUMMARY...Clusters of severe storms, including supercells and bowing
segments, will move northward from Oregon into Washington and the
Idaho Panhandle the remainder of this afternoon through late
evening. The storm environment is favorable for both damaging
winds, some of which could be significant, and large hail. An
isolated tornado cannot be ruled out.
The severe thunderstorm watch area is approximately along and 100
statute miles east and west of a line from 65 miles south southeast
of Ephrata WA to 55 miles northeast of Omak WA. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU7).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A Severe Thunderstorm Watch means conditions are
favorable for severe thunderstorms in and close to the watch area.
Persons in these areas should be on the lookout for threatening
weather conditions and listen for later statements and possible
warnings. Severe thunderstorms can and occasionally do produce
tornadoes.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 236...
AVIATION...A few severe thunderstorms with hail surface and aloft to
2 inches. Extreme turbulence and surface wind gusts to 70 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
21045.
...Thompson
SEL7
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 237
NWS Storm Prediction Center Norman OK
415 PM PDT Sat May 30 2020
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
The Idaho Panhandle
Central and eastern Washington
* Effective this Saturday afternoon and evening from 415 PM until
1100 PM PDT.
* Primary threats include...
Scattered damaging winds and isolated significant gusts to 80
mph likely
Scattered large hail and isolated very large hail events to 2
inches in diameter possible
A tornado or two possible
SUMMARY...Clusters of severe storms, including supercells and bowing
segments, will move northward from Oregon into Washington and the
Idaho Panhandle the remainder of this afternoon through late
evening. The storm environment is favorable for both damaging
winds, some of which could be significant, and large hail. An
isolated tornado cannot be ruled out.
The severe thunderstorm watch area is approximately along and 100
statute miles east and west of a line from 65 miles south southeast
of Ephrata WA to 55 miles northeast of Omak WA. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU7).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A Severe Thunderstorm Watch means conditions are
favorable for severe thunderstorms in and close to the watch area.
Persons in these areas should be on the lookout for threatening
weather conditions and listen for later statements and possible
warnings. Severe thunderstorms can and occasionally do produce
tornadoes.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 236...
AVIATION...A few severe thunderstorms with hail surface and aloft to
2 inches. Extreme turbulence and surface wind gusts to 70 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
21045.
...Thompson
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW7
WW 237 SEVERE TSTM ID WA 302315Z - 310600Z
AXIS..100 STATUTE MILES EAST AND WEST OF LINE..
65SSE EPH/EPHRATA WA/ - 55NE OMK/OMAK WA/
..AVIATION COORDS.. 85NM E/W /44N PDT - 78ESE YDC/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..70 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 21045.
LAT...LON 46412110 49002087 49001646 46411690
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU7.
Watch 237 Status Report Messages:
STATUS REPORT #2 ON WW 237
VALID 310200Z - 310340Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..JEWELL..05/31/20
ATTN...WFO...OTX...
&&
STATUS REPORT FOR WS 237
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
IDC009-017-021-055-057-061-069-079-310340-
ID
. IDAHO COUNTIES INCLUDED ARE
BENEWAH BONNER BOUNDARY
KOOTENAI LATAH LEWIS
NEZ PERCE SHOSHONE
$$
WAC001-003-007-017-019-023-025-043-047-051-063-065-075-310340-
WA
. WASHINGTON COUNTIES INCLUDED ARE
ADAMS ASOTIN CHELAN
DOUGLAS FERRY GARFIELD
GRANT LINCOLN OKANOGAN
PEND OREILLE SPOKANE STEVENS
WHITMAN
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 237
VALID 310045Z - 310140Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..JEWELL..05/31/20
ATTN...WFO...OTX...
&&
STATUS REPORT FOR WS 237
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
IDC009-017-021-055-057-061-069-079-310140-
ID
. IDAHO COUNTIES INCLUDED ARE
BENEWAH BONNER BOUNDARY
KOOTENAI LATAH LEWIS
NEZ PERCE SHOSHONE
$$
WAC001-003-007-017-019-023-025-043-047-051-063-065-075-310140-
WA
. WASHINGTON COUNTIES INCLUDED ARE
ADAMS ASOTIN CHELAN
DOUGLAS FERRY GARFIELD
GRANT LINCOLN OKANOGAN
PEND OREILLE SPOKANE STEVENS
WHITMAN
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Low (20%)
|
Probability of 1 or more strong (EF2-EF5) tornadoes
|
Low (5%)
|
Wind
Probability of 10 or more severe wind events
|
High (70%)
|
Probability of 1 or more wind events > 65 knots
|
Mod (60%)
|
Hail
Probability of 10 or more severe hail events
|
Mod (40%)
|
Probability of 1 or more hailstones > 2 inches
|
Mod (30%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
High (90%)
|
For each watch, probabilities for particular events inside the watch
(listed above in each table) are determined by the issuing forecaster.
The "Low" category contains probability values ranging from less than 2%
to 20% (EF2-EF5 tornadoes), less than 5% to 20% (all other probabilities),
"Moderate" from 30% to 60%, and "High" from 70% to greater than 95%.
High values are bolded and lighter in color to provide awareness of
an increased threat for a particular event.
weather.gov 
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