Severe Thunderstorm Warning 340, NWS Cheyenne, WY

431 
WWUS55 KCYS 160632
SVSCYS

Severe Weather Statement
National Weather Service Cheyenne WY
1232 AM MDT Fri Aug 16 2019

WYC031-160641-
/O.CAN.KCYS.SV.W.0340.000000T0000Z-190816T0715Z/
Platte WY-
1232 AM MDT Fri Aug 16 2019

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL PLATTE COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 500 AM MDT for
the Panhandle of Nebraska...and southeastern Wyoming.

LAT...LON 4204 10466 4226 10465 4221 10405 4168 10405
TIME...MOT...LOC 0631Z 292DEG 41KT 4208 10439 

$$

WYC015-160715-
/O.CON.KCYS.SV.W.0340.000000T0000Z-190816T0715Z/
Goshen WY-
1232 AM MDT Fri Aug 16 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 AM MDT
FOR CENTRAL GOSHEN COUNTY...

At 1231 AM MDT, a severe thunderstorm was located near Lingle, or 10
miles west of Torrington, moving east at 45 mph.

HAZARD...60 mph wind gusts and half dollar size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Torrington, Lingle, Fort Laramie, Yoder, Huntley, Fort Laramie
National Historic Site, Veteran and Henry.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4204 10466 4226 10465 4221 10405 4168 10405
TIME...MOT...LOC 0631Z 292DEG 41KT 4208 10439 

HAIL...1.25IN
WIND...60MPH
 
$$

Lyons

731 
WWUS55 KCYS 160646
SVSCYS

Severe Weather Statement
National Weather Service Cheyenne WY
1246 AM MDT Fri Aug 16 2019

WYC015-160715-
/O.CON.KCYS.SV.W.0340.000000T0000Z-190816T0715Z/
Goshen WY-
1246 AM MDT Fri Aug 16 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 AM MDT
FOR SOUTHEASTERN GOSHEN COUNTY...

At 1245 AM MDT, a severe thunderstorm was located near Veteran, or 
near Torrington, moving southeast at 45 mph. This storm has a 
history of producing large destructive hail! Move to an interior 
room away from windows. Prepare now for large and possibly damaging 
hail. 

HAZARD...Golf ball size hail and 60 mph wind gusts.

SOURCE...Emergency management.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees.

Locations impacted include...
Torrington, Lingle, Yoder, Huntley, Veteran and Henry. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

This storm is producing large hail. SEEK SHELTER NOW inside a sturdy
structure and stay away from windows.

&&

LAT...LON 4192 10446 4224 10441 4221 10405 4168 10405
TIME...MOT...LOC 0645Z 292DEG 38KT 4202 10429 

HAIL...1.75IN
WIND...60MPH
 
$$

Lyons

166 
WWUS55 KCYS 160711
SVSCYS

Severe Weather Statement
National Weather Service Cheyenne WY
111 AM MDT Fri Aug 16 2019

WYC015-160720-
/O.EXP.KCYS.SV.W.0340.000000T0000Z-190816T0715Z/
Goshen WY-
111 AM MDT Fri Aug 16 2019

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN GOSHEN COUNTY
WILL EXPIRE AT 115 AM MDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

A Severe Thunderstorm Watch remains in effect until 500 AM MDT for
the Panhandle of Nebraska...and southeastern Wyoming.

LAT...LON 4192 10446 4224 10441 4221 10405 4168 10405
TIME...MOT...LOC 0710Z 292DEG 41KT 4192 10395 

$$

Lyons

Area Forecast Discussion...UPDATED
National Weather Service Cheyenne WY
1157 PM MDT Thu Aug 15 2019

.UPDATE...
Issued at 1145 PM MDT Thu Aug 15 2019

Please see updated 06Z aviation discussion below.

&&

.SHORT TERM...(This evening through Saturday)
Issued at 233 PM MDT Thu Aug 15 2019

A couple strong to severe storms moving across northern Goshen
county presently. These likely set off by the southern fringe of a
shortwave moving across South Dakota as well as a diffuse outflow
boundary. Some question as to how far they will progress into the
Panhandle the rest of the afternoon. Of more concern is the
likelihood for another round of strong convection later this
evening/tonight up north as another shortwave passes by, a
similar setup to last night. Activity should move out of the CWA
very late tonight or early Friday morning.

Friday and Saturday will continue to have a chance for convection
mainly east of the mtns but should be isolated. Sufficient shear
and instability for a few strong to severe storms but forcing
remaining rather low.

.LONG TERM...(Saturday night through Thursday)
Issued at 233 PM MDT Thu Aug 15 2019

A warmer and mainly dry weather regime should build into the area
Sunday into early next as the upper high builds over the region
and the stronger westerlies lift well north of the area. Chances
for isolated mainly late day showers and storms should return by
midweek as a bit of moisture lifts northward into the region.

&&

.AVIATION...(For the 06Z TAFS through 06Z Friday night)
Issued at 1145 PM MDT Thu Aug 15 2019

Main aviation impacts continue to be the strong to severe TSRA
moving east in far east Wyoming and will then shift into the
northern Nebraska Panhandle over the next 3-4 hours. Large Hail,
strong, turbulent winds, and frequent lightning are occurring
with these storms. Direct TAF impacts are likely at KCDR and KAIA.
In addition, KBFF may be impacted again in the next 3 hours as
well. Will closely monitor amendments for GR additions. Have
placed TEMPO and direct TSRA wording in TAFs. FL650 storm tops
with the strongest of storms through 11Z. All storms will shift
east into Central Nebraska after 11-12Z with calmer rest of the
morning anticipated. Isolated to scattered SHRA/TSRA will again
develop Friday afternoon near KLAR/KCYS/KSNY with more limited
coverage farther north.

&&

.FIRE WEATHER...
Issued at 233 PM MDT Thu Aug 15 2019

Little change is seen in the weather conditions through the
weekend with critical to near critical conditions looking to
remain confined to southwestern Carbon county. Another round of
showers and storms is expected mainly over east central Wyoming
across the northern Nebraska panhandle tonight with more isolated
activity east of the mountains Friday and Saturday. Mainly dry
and warmer conditions will move in Sunday and continue into early
next week.

&&

.CYS WATCHES/WARNINGS/ADVISORIES...
WY...Red Flag Warning from noon to 8 PM MDT Friday for WYZ304.

Severe Thunderstorm Watch remains in effect until 5am for
portions of Southeast Wyoming.

NE...Severe Thunderstorm Watch remains in effect until 5am for
portions of the Nebraska Panhandle.

&&

UPDATE...JSA
SHORT TERM...RE
LONG TERM...RE
AVIATION...JSA
FIRE WEATHER...RE

Hazardous Weather Outlook
National Weather Service Cheyenne WY
1043 AM MDT Thu Aug 15 2019

NEZ002-003-019-021-095-096-WYZ101-102-107-108-161000-
Dawes-Box Butte-Scotts Bluff-Morrill-North Sioux-South Sioux-
Converse County Lower Elevations-Niobrara County-
East Platte County-Goshen County-
1043 AM MDT Thu Aug 15 2019

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

.DAY ONE...TODAY AND TONIGHT

Isolated thunderstorms will be possible this afternoon with a few
strong storms possible. A somewhat greater threat for scattered
strong to severe storms is expected later tonight with large hail
the main threat.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

Widely scattered showers and storms are expected mainly on Friday,
with a few of the storms possibly becoming severe, mainly over the
Nebraska Panhandle.

.Spotter information statement...

Spotter activation is not expected at this time.

NEZ020-054-055-WYZ103>106-109>119-161000-
Banner-Kimball-Cheyenne-North Laramie Range-
Ferris/Seminoe/Shirley Mountains-Shirley Basin-
Central Laramie Range and Southwest Platte 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-
1043 AM MDT Thu Aug 15 2019

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

.DAY ONE...TODAY AND TONIGHT

Isolated showers and thunderstorms are possible into this evening
but the severe threat is low.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

The probability for widespread hazardous weather is low.

.Spotter information statement...

Spotter activation will not be needed.

Special Weather Statement
National Weather Service Cheyenne WY
1049 PM MDT Thu Aug 15 2019

WYZ101-103-107-160515-
East Platte County WY-Converse County Lower Elevations WY-
North Laramie Range WY-
1049 PM MDT Thu Aug 15 2019

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN ALBANY...
NORTHWESTERN PLATTE AND SOUTHEASTERN CONVERSE COUNTIES UNTIL 1115 PM
MDT...

At 1049 PM MDT, Doppler radar was tracking a strong thunderstorm near
Laprele Reservoir, or 11 miles southwest of Douglas, moving southeast
at 40 mph.

Nickel size hail and wind gusts up to 50 mph will be possible with
this storm.

Locations impacted include...
Esterbrook Campground and Laprele Reservoir.

This includes Interstate 25 in Wyoming between mile markers 122 and
127.

A Severe Thunderstorm Watch remains in effect until 500 AM MDT for
southeastern and east central Wyoming.

LAT...LON 4260 10571 4277 10560 4264 10510 4240 10530
TIME...MOT...LOC 0449Z 295DEG 33KT 4266 10557

Brothers

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
1118 PM MDT THU AUG 15 2019

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

1113 PM     HAIL             4 SSW RAWHIDE BUTTES    42.52N 104.53W
08/15/2019  M1.25 INCH       GOSHEN             WY   TRAINED SPOTTER

            BROKEN WINDOW

&&

WILLS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
1124 PM MDT THU AUG 15 2019

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

1123 PM     HAIL             4 S LUSK                42.70N 104.45W
08/15/2019  M1.00 INCH       NIOBRARA           WY   TRAINED SPOTTER

            TORRENTIAL RAINFALL OBSERVED IN ADDITION TO QUARTER HAIL
            SIZE.

&&

WILLS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
1153 PM MDT THU AUG 15 2019

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

1150 PM     HAIL             29 N TORRINGTON         42.49N 104.18W
08/15/2019  M1.00 INCH       GOSHEN             WY   CO-OP OBSERVER

&&

WILLS

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE CHEYENNE WY
1157 PM MDT THU AUG 15 2019

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

1150 PM     HAIL             23 N TORRINGTON         42.40N 104.18W
08/15/2019  M1.00 INCH       GOSHEN             WY   CO-OP OBSERVER

&&

WILLS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
1206 AM MDT FRI AUG 16 2019

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

1206 AM     HAIL             GUERNSEY                42.27N 104.74W
08/16/2019  E1.00 INCH       PLATTE             WY   PUBLIC

&&

WILLS