Special Weather Statement, NWS Cheyenne, WY

Area Forecast Discussion
National Weather Service Cheyenne WY
500 PM MDT Mon Jul 1 2019

.SHORT TERM...(This evening through Tuesday night)
Issued at 232 PM MDT Mon Jul 1 2019

Convection popping over se Wy currently but not really organizing
much as shear is pretty low and only modest instabilities. Could
see a few stronger storms at times into this evening, likely
brief, with strong wind gusts the main threat. HRRR pretty much
keep activity over se Wy with little over the Panhandle. Tuesday
pretty much more of the same as the CWA remains under a generally
WSW upper flow with weak impulses riding across, with sctd showers
and tstms once again in the aftn and evening, a few potentially
strong.  Activity waning in the evening.

.LONG TERM...(Wednesday through Monday)
Issued at 232 PM MDT Mon Jul 1 2019

Fairly stagnant weather pattern over the region through the period
with upper troughing over the Pacific northwest and upper ridging
over the southern plains keeping a generally swly upper flow over
the area. Weak impulses will pass by from time to time keeping
sctd mainly aftn and evening showers/tstms through the period.
Temperatures remaining around seasonal averages.

&&

.AVIATION...(For the 00Z TAFS through 00Z Tuesday evening)
Issued at 456 PM MDT Mon Jul 1 2019

Thunderstorms early this evening impacting airfields along and
south of a line from Wheatland to Torrington to Scottsbluff. Looks
like storms die off after 03Z or so. Could see low stratus
returning to KCDR and KAIA...given forecast wind directions
though...not quite confident enough to add. Will continue
monitoring for the 06Z TAFs.

&&

.FIRE WEATHER...
Issued at 232 PM MDT Mon Jul 1 2019

Concerns expected to stay low with little change expected in the
weather over the area this week. Temperatures will be seasonal
with scattered showers and thunderstorms pretty much every day,
mostly in the afternoons and evenings.

&&

.HYDROLOGY...
Issued at 219 AM MDT Mon Jul 1 2019

Additional rainfall and snowmelt over the next several days could
bring levels back to action stage, but the heaviest rain looks to
stay to the east of the mountain ranges.

&&

.CYS WATCHES/WARNINGS/ADVISORIES...
WY...None.
NE...None.
&&

SHORT TERM...RE
LONG TERM...RE
AVIATION...GCC
FIRE WEATHER...RE
HYDROLOGY...RUBIN

Hazardous Weather Outlook
National Weather Service Cheyenne WY
1027 AM MDT Mon Jul 1 2019

NEZ002-003-019>021-054-055-095-096-WYZ101>119-021000-
Dawes-Box Butte-Scotts Bluff-Banner-Morrill-Kimball-Cheyenne-
North Sioux-South Sioux-Converse County Lower Elevations-
Niobrara County-North Laramie Range-
Ferris/Seminoe/Shirley Mountains-Shirley Basin-
Central Laramie Range and Southwest Platte County-
East Platte County-Goshen County-Central Carbon County-
North Snowy Range Foothills-Southwest Carbon County-
Sierra Madre Range-Upper North Platte River Basin-Snowy Range-
Laramie Valley-South Laramie Range-South Laramie Range Foothills-
Central Laramie County-East Laramie County-
1027 AM MDT Mon Jul 1 2019

This hazardous weather outlook is for portions of western
Nebraska...east central Wyoming...south central Wyoming and
southeast Wyoming.

.DAY ONE...TODAY AND TONIGHT

Isolated to scattered afternoon and evening thunderstorms are
expected. A few of the storms may become strong to marginally severe
over southeast Wyoming along and east of Interstate 25, and over the
southern Nebraska Panhandle. Strong wind gusts appear to be the main
threat though some hail is possible as well.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

Scattered afternoon and evening thunderstorms will be possible
nearly every day through the weekend.

.Spotter information statement...

Spotter activation is not expected.

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Special Weather Statement
National Weather Service Cheyenne WY
831 PM MDT Mon Jul 1 2019

NEZ019>021-020315-
Scotts Bluff NE-Morrill NE-Banner NE-
831 PM MDT Mon Jul 1 2019

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN SCOTTS BLUFF...WESTERN
MORRILL AND NORTH CENTRAL BANNER COUNTIES UNTIL 915 PM MDT...

At 831 PM MDT, Doppler radar was tracking a strong thunderstorm over
Gering, or near Scottsbluff, moving southeast at 20 mph.

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

Locations impacted include...
Scottsbluff, Gering, Bayard, Terrytown, Minatare, Wildcat Hills State
Recreation Area, Scottsbluff Airport, Wildcat Hills Campground,
Scotts Bluff National Monument, Melbeta and McGrew.

LAT...LON 4179 10378 4195 10354 4177 10330 4160 10358
TIME...MOT...LOC 0231Z 304DEG 8KT 4180 10368

Brothers

Special Weather Statement
National Weather Service Cheyenne WY
834 PM MDT Mon Jul 1 2019

NEZ019-020-096-WYZ108-118-119-020315-
Scotts Bluff NE-South Sioux NE-Banner NE-Goshen County WY-
Central Laramie County WY-East Laramie County WY-
834 PM MDT Mon Jul 1 2019

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN SCOTTS BLUFF...
NORTHWESTERN BANNER...SOUTHWESTERN SIOUX...SOUTHERN GOSHEN AND
NORTHEASTERN LARAMIE COUNTIES UNTIL 915 PM MDT...

At 833 PM MDT, Doppler radar was tracking strong thunderstorms along
a line extending from 7 miles east of Torrington to 9 miles northwest
of Meriden Rest Area. Movement was southeast at 25 mph.

Pea size hail and winds in excess of 40 mph will be possible with
these storms.

Locations impacted include...
Mitchell, Morrill, La Grange, Lyman, Yoder, Huntley, Stegall, Hawk
Springs, Hawk Springs Campground, Hubbard Hill, Hawk Springs
Recreation Area, Meriden Rest Area and Henry.

LAT...LON 4192 10371 4136 10425 4173 10459 4207 10409
TIME...MOT...LOC 0233Z 328DEG 23KT 4205 10404 4164 10444

Brothers

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
836 PM MDT MON JUL 1 2019

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

0831 PM     FLASH FLOOD      10 WSW LINGLE           42.06N 104.51W
07/01/2019                   GOSHEN             WY   EMERGENCY MNGR

            REPORTS OF WATER RUNNING ACROSS COUNTY ROADS
            WEST OF VETERAN WITH STANDING WATER ON ROAD
            23 FROM 68 TO 70 WITH MARBLE SIZE HAIL
            DRIFTING UP TO TWO FEET. 100 FOOT WATER WIDE
            ABOUT 3 TO 4 FEET DEEP CARRYING LOGS ON
            CHERRY CREEK.

&&

WM

Special Weather Statement
National Weather Service Cheyenne WY
914 PM MDT Mon Jul 1 2019

NEZ020-WYZ108-119-020345-
Banner NE-Goshen County WY-East Laramie County WY-
914 PM MDT Mon Jul 1 2019

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN BANNER...SOUTHEASTERN
GOSHEN AND NORTHEASTERN LARAMIE COUNTIES UNTIL 945 PM MDT...

At 914 PM MDT, Doppler radar was tracking a strong thunderstorm near
La Grange, or 29 miles southwest of Scottsbluff, moving east at 25
mph.

Half inch hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
La Grange.

LAT...LON 4151 10431 4160 10432 4171 10416 4165 10377
      4140 10396
TIME...MOT...LOC 0314Z 289DEG 20KT 4160 10411

Mokry

Special Weather Statement
National Weather Service Cheyenne WY
944 PM MDT Mon Jul 1 2019

NEZ020-054-WYZ119-020430-
Kimball NE-Banner NE-East Laramie County WY-
944 PM MDT Mon Jul 1 2019

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN KIMBALL...SOUTHERN BANNER
AND NORTHEASTERN LARAMIE COUNTIES UNTIL 1030 PM MDT...

At 943 PM MDT, Doppler radar was tracking a strong thunderstorm 9
miles west of Harrisburg, or 22 miles northwest of Kimball, moving
southeast at 30 mph.

Pea size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Kimball, Dix and Harrisburg.

This includes Interstate 80 in Nebraska between mile markers 19 and
32.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Very heavy rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
office in Cheyenne.

&&

LAT...LON 4149 10407 4164 10400 4153 10337 4104 10348
TIME...MOT...LOC 0343Z 295DEG 26KT 4150 10390

Claycomb