Severe Thunderstorm Warning 7, NWS Pocatello, ID

173 
WWUS55 KPIH 050248
SVSPIH

Severe Weather Statement
National Weather Service Pocatello ID
848 PM MDT SUN JUN 4 2017

IDC013-063-067-050315-
/O.CON.KPIH.SV.W.0007.000000T0000Z-170605T0315Z/
Blaine ID-Lincoln ID-Minidoka ID-
848 PM MDT SUN JUN 4 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM MDT
FOR CENTRAL BLAINE...NORTHEASTERN LINCOLN AND NORTHEASTERN MINIDOKA
COUNTIES...

At 847 PM MDT, a severe thunderstorm was located 11 miles east of
Carey, moving northeast at 60 mph.

HAZARD...60 mph wind gusts and penny size hail. 

SOURCE...Radar indicated. 

IMPACT...Expect damage to roofs, siding, and trees as well as 
         hazardous crosswinds. 

Locations impacted include...
Carey and Craters Of The Moon. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4344 11379 4318 11334 4296 11394 4310 11418
TIME...MOT...LOC 0247Z 221DEG 51KT 4329 11372 

HAIL...0.75IN
WIND...60MPH
 
$$

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180 
WWUS55 KPIH 050301
SVSPIH

Severe Weather Statement
National Weather Service Pocatello ID
901 PM MDT SUN JUN 4 2017

IDC013-063-067-050310-
/O.CAN.KPIH.SV.W.0007.000000T0000Z-170605T0315Z/
Blaine ID-Lincoln ID-Minidoka ID-
901 PM MDT SUN JUN 4 2017

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL BLAINE...NORTHEASTERN
LINCOLN AND NORTHEASTERN MINIDOKA COUNTIES IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore the warning has been cancelled.  However gusty winds are
still possible with this thunderstorm.

LAT...LON 4344 11379 4318 11334 4296 11394 4310 11418
TIME...MOT...LOC 0256Z 221DEG 51KT 4344 11354 

$$

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Area Forecast Discussion
National Weather Service Pocatello ID
734 PM MDT Sun Jun 4 2017

.UPDATE...Post frontal winds behind the cold front advancing up
the Snake Plain this evening are stronger than forecast. Winds
were adjusted up and allow for gusts to around 45 mph in Cassia
County area this evening, particularly portions of Interstate 84
between Sublette and the I-86 interchange. A wind advisory was
issued until 1 am MDT. RS

&&

.PREV DISCUSSION... /issued 206 PM MDT Sun Jun 4 2017/

SHORT TERM...Tonight through Monday night. Forecast updates through
this evening lean heavily on high-resolution model trends, which
thus far have given a good representation of observed conditions.
Thunderstorms have begun to develop across Custer County and the
Pashimeroi Range. Anticipate Thunderstorm develop in the vicinity
of Cassia County by 3-5PM, with this activity then expected to
spread northward through the Snake Plain this evening. The Snake
Plain is favored for strong thunderstorm wind gusts given ideal
thermodynamic environment in place to support gusty thunderstorm
downdraft winds. Thunderstorms will be capable of producing wind
gusts to 60 mph, large hail and frequent lightning. However,
severe wind gusts are possible with any thunderstorm across the
area through the evening. The severe threat is expected to
diminish towards midnight with lingering shower and thunderstorm
activity forecast to end during the early morning hours. A strong
cold front will sweep eastward across SE Idaho with gusty winds
and a quick temperature drop during the early morning hours.
Lingering showers possible early especially along Wyoming and
Montana borders as shortwave trough ejects northeast into Montana.
Otherwise expect dry push to rapidly clear precipitation threat
rest of the region early in the day. Surface wind gradient
decreases through the day but cool advection continues so high
temperatures expected to drop some 10-15 degrees from today's
readings, then continue cool overnight. AD/DMH

LONG TERM...Tuesday through Sunday. Upper ridge axis remains
in place across Idaho/Wyoming through Wednesday night. Look for
warming temperatures with afternoon highs approaching or exceeding
90 Wednesday in lower elevations. Deep Pacific trough moves into
coastal regions Wednesday night into Thursday. Could see some weak
convection fire at apex of ridge as it begins to shift further
east into Wyoming late Wednesday but confidence extremely low on
this scenario so have kept forecast dry for now. Precipitation
associated with trough expected to hold off for East Idaho until
during the day Friday. GFS and ECMWF beginning to diverge in
solutions at this point with ECMWF showing more impact with jet
features behind the trough. Both however show weakly negative
trough rapidly pushing through the region so convection Friday
could be vigorous especially with help from frontal push.
Interestingly, GFS numerical guidance has significantly increased
the surface winds early Saturday behind the front, and currently
remains the only model/guidance to do so. By Saturday, base of
trough expected to drop into PacNW states. GFS/ECMWF have similar
timing but GFS has closed off 500mb circulation over OR by
Saturday night. ECMWF waits to close off low further north and
nearly 24 hours later. Regardless of differences this far out,
take away is for unsettled conditions and cooler behind
significant front late Friday/Friday night. Have nudged PoPs up,
temps down, and kept winds within bounds of overall model
consensus with a slight tick up as a nod to increasing GFS
guidance this far out. DMH

AVIATION...Convection just getting underway, mainly north of KSUN
in the central ID mountains. This is expected to spread with the
best chances at KSUN and KBYI. However, all airdromes are subject to
-TSRA through the evening; no where is the threat high enough for
 a TEMPO or FM group, so will monitor until something develops.
 Winds haven't quite been as gusty as expected except at KDIJ.
 Current guidance has more variable wind, especially the HRRR.
 Skies will start clearing after midnight tonight, in time for no
 CIGs as the airports open in the morning. VSBY expected to remain
 P6SM outside of -TSRA. Messick

HYDROLOGY...Snow melt continues to feed into Lost and Wood River
basins, plus the South Fork and Teton Rivers in the Snake River
system. Wood River at Hailey is the worst hit with major flooding
continuing. Bear River near Pegram and the WY border continues right
around flood stage. The Big Lost River continues to have problems
near Howell Ranch and the Mackay Reservoir releases continue to keep
the river below that point in minor flooding. Teton River at Driggs
is forecast to go into minor flood stage in about 5 to 6 days, so
have continued the River Statement. Messick

&&

.PIH WATCHES/WARNINGS/ADVISORIES...
Wind Advisory until 1 AM MDT Monday for IDZ022.

&&

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
735 PM MDT SUN JUN 04 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0700 PM     TSTM WND GST     6 NW MINIDOKA           42.80N 113.59W
06/04/2017  M59 MPH          MINIDOKA           ID   LAW ENFORCEMENT

            MEASURED AT THE NOAA ARL MESONET SITE NEAR MINIDOKA.

&&

ADESMET

Special Weather Statement
National Weather Service Pocatello ID
743 PM MDT SUN JUN 4 2017

IDZ019-020-032-050230-
Lost River/Pashimeroi ID-Upper Snake Highlands ID-
Upper Snake River Plain ID-
743 PM MDT SUN JUN 4 2017

...STRONG GUSTY THUNDERSTORM OUTFLOW WINDS FOR NORTHWESTERN
JEFFERSON... NORTHEASTERN BUTTE AND SOUTH CENTRAL CLARK COUNTIES
UNTIL 830 PM MDT...

At 741 PM MDT, Doppler radar was tracking a strong thunderstorm near
Northwest Inl, or 10 miles west of Terreton, moving north at 35 mph.

Wind gusts of 50 to 55 mph will be possible with this storm.

These storms have a history of producing multiple wind gusts over 50
mph.

Significant blowing dust is possible on Highway 33 west of Mud
Lake/Terreton with this activity. Reduce driving speeds.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 4375 11252 4382 11275 4414 11265 4399 11230
TIME...MOT...LOC 0141Z 202DEG 32KT 4379 11264

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Special Weather Statement
National Weather Service Pocatello ID
802 PM MDT SUN JUN 4 2017

IDZ017-050245-
Eastern Magic Valley ID-
802 PM MDT SUN JUN 4 2017

...STRONG GUSTY THUNDERSTORM WINDS FOR CENTRAL LINCOLN COUNTY UNTIL
845 PM MDT...

At 801 PM MDT, Doppler radar was tracking a strong thunderstorm 7
miles southeast of Shoshone, moving northeast at 45 mph.

Half inch hail and wind gusts of 50 to 55 mph will be possible with
this storm.

This storm produced a wind gust to 54 mph near Jerome at 755 PM.

Seek a sturdy shelter until the storm has passed.

Locations impacted include...
Shoshone, Richfield and Dietrich.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 4317 11423 4295 11387 4279 11405 4281 11405
      4281 11435 4282 11435 4282 11437 4285 11437
      4285 11452
TIME...MOT...LOC 0201Z 221DEG 40KT 4284 11432

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Special Weather Statement
National Weather Service Pocatello ID
809 PM MDT SUN JUN 4 2017

IDZ017-018-020-031-032-050300-
Lost River/Pashimeroi ID-Big and Little Wood River Region ID-
Upper Snake River Plain ID-Sawtooth Mountains ID-
Eastern Magic Valley ID-
809 PM MDT SUN JUN 4 2017

...STRONG GUSTY THUNDERSTORM WINDS FOR SOUTHEASTERN CUSTER...
NORTHEASTERN BLAINE AND SOUTHWESTERN BUTTE COUNTIES UNTIL 900 PM
MDT...

At 808 PM MDT, Doppler radar was tracking a strong thunderstorm 9
miles northwest of Craters Of The Moon, or 10 miles south of Grouse,
moving north at 45 mph.

Half inch hail and wind gusts of 50 to 55 mph will be possible with
this storm.

Blowing dust is probable due to the winds associated with this
storm, which may significantly reduce visibility. Reduce driving
speeds.

Many storms this evening have a history of producing winds in excess
of 50 mph.

Locations impacted include...
Arco, Mackay, Grouse, Darlington, Craters Of The Moon and Moore.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 4342 11348 4349 11379 4406 11363 4390 11309
TIME...MOT...LOC 0208Z 199DEG 39KT 4353 11365

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Special Weather Statement
National Weather Service Pocatello ID
820 PM MDT SUN JUN 4 2017

IDZ019-020-032-050300-
Lost River/Pashimeroi ID-Upper Snake Highlands ID-
Upper Snake River Plain ID-
820 PM MDT SUN JUN 4 2017

...STRONG GUSTY WINDS AND SMALL HAIL FOR NORTHWESTERN
JEFFERSON...EAST CENTRAL BUTTE AND SOUTHWESTERN CLARK COUNTIES UNTIL
900 PM MDT...

At 819 PM MDT, Doppler radar was tracking a strong thunderstorm 9
miles northwest of Northwest Inl, or 21 miles northwest of Terreton,
moving northeast at 40 mph.

Dime size hail and wind gusts of 50 to 55 mph will be possible with
this storm.

Storms have had a history of producing wind gusts in excess of 50
mph along with blowing dust that may significantly reduce visibility.
Reduce driving speeds.

This storm will remain over mainly rural areas of northwestern
Jefferson...east central Butte and southwestern Clark Counties.

LAT...LON 4412 11245 4387 11277 4397 11297 4423 11283
      4423 11281 4426 11282 4429 11280
TIME...MOT...LOC 0219Z 216DEG 36KT 4399 11281

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Special Weather Statement
National Weather Service Pocatello ID
829 PM MDT SUN JUN 4 2017

IDZ017-031-050315-
Big and Little Wood River Region ID-Eastern Magic Valley ID-
829 PM MDT SUN JUN 4 2017

...STRONG GUSTY THUNDERSTORM WINDS FOR CENTRAL BLAINE...NORTHEASTERN
LINCOLN AND NORTH CENTRAL MINIDOKA COUNTIES UNTIL 915 PM MDT...

At 827 PM MDT, Doppler radar was tracking a strong thunderstorm 7
miles east of Richfield, or 16 miles south of Carey, moving northeast
at 50 mph.

Half inch hail and wind gusts of 50 to 55 mph will be possible with
this storm.

This storm produced a wind gust to 54 mph near Jerome.

This storm will produce areas of blowing dust that may significantly
reduce visibility. Reduce driving speeds.

Locations impacted include...
Carey, Picabo and Little Wood Reservoir.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 4294 11397 4313 11425 4354 11399 4324 11349
TIME...MOT...LOC 0227Z 221DEG 45KT 4306 11400

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