A thunderstorm produced strong winds in northeast Dawes County.
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The episode as NWS CYS wrote it up.
A thunderstorm produced strong winds in northeast Dawes County.
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 Cheyenne, WY wrote its last area forecast discussion before the first event at Aug 3, 1:24 PM MST, 2 hours 51 minutes earlier.
Area Forecast Discussion National Weather Service Cheyenne WY 224 PM MDT WED AUG 3 2016 .SHORT TERM...(This evening through Friday night) Issued at 224 PM MDT Wed Aug 3 2016 Forecast challenges deal with fire weather today followed by PoPs and temperatures for Thursday and Friday. Currently...1003mb surface low over eastern Montana this afternoon. Pretty strong cold front from this low extends southwest to near Riverton to Salt Lake City this afternoon. Ahead of this front, westerly winds have begun to increase across Carbon and Converse Counties. Near critical fire conditions being observed in some places. Dear Creek WYDOT site gusting to 27MPH with humidities down near 18 percent. Other reporting stations in Converse County already down to 15 percent. Will continue the RFW for FWZ 301 this afternoon as winds continue to remain elevated and humidities continue to lower. To the west of the front, temperatures in the 70s are being reported in Idaho with mid 60s in western Montana. For this afternoon and evening, latest HRRR continues to show showers increasing late afternoon across northern Wyoming and eventually the northern Nebraska Panhandle. Maintained inherited PoPs from the night crew as they look pretty good. Do not think we will see severe thunderstorms this evening as instability is pretty meager. Latest RAP forecast off SPC Mesoanalysis page only showing around 500 J/KG CAPE across southeast Wyoming this afternoon and early evening and shear pretty low as well. Upslope regime Thursday as front looks to lay from maybe Fort Collins to Laramie to Dixon Thursday morning and afternoon. Very cool day Thursday as we lose 10 degrees C cooling at 700mb across the eastern half of the CWFA. GFS down to +7C across northern Albany County, today was around +17C. Upslope regime should mean increased low clouds, along with the CAA, afternoon highs Thursday in the 70s across Converse/Niobrara Counties and low 70s here at Cheyenne. Warmest temperatures will be out west of the front. Even cooler day in store for Friday. Both the GFS and ECMWF breaking out fairly widespread PoPs across southern Wyoming in the upslope regime. 700mb temperatures still around +7 to +8C over the CWFA. Combination of rain/low clouds and cold upper level temperatures will result in highs only in the 60s to low 70s across most areas. .LONG TERM...(Saturday through Wednesday) Issued at 224 PM MDT Wed Aug 3 2016 A return to more seasonable weather expected for the CWA this period with an upper low and associated trough over the west coastal areas into early next week. This will provide a generally southwesterly flow aloft across the CWA. Some monsoonal moisture should get caught in this flow and with any weak impulses we will see widely scattered mainly afternoon and evening convection mainly Saturday through Monday. Convection may then decrease Tuesday and Wednesday as some drier air looks to infuse into the upper flow over the area with monsoonal moisture shifting to the south. Mild on saturday with max temps generally below normal then warming back to near or a little above normal thereafter. && .AVIATION...(For the 18Z TAFS through 18Z Thursday morning) Issued at 1123 AM MDT Wed Aug 3 2016 VFR expected overall through the period. Brief pds of MVFR visibilities possible in isolated showers and tstms mainly over and east of the mtns this afternoon and evening. A cold front will move south across the area overnight switching winds to a northerly to northeasterly direction. && .FIRE WEATHER... Issued at 224 PM MDT Wed Aug 3 2016 Elevated to critical fire weather conditions occurring across Converse County and points west of the Laramie Range this afternoon. This is due to a cold front pushing southwest across central Wyoming. Winds ahead of the front gusting into the 30MPH range with afternoon humidities in the mid teens. Red Flag Warning remains in effect for FWZ 301 where combination of dried fuels, gusty winds and low humidities are in place. Front looks to move into Converse County this evening and eventually lay along the east slopes of the Laramie Range by Thursday morning. WInds shifting from west to north to eventually northeast behind the front with humidities increasing. Noticeably colder temperatures Thursday and Friday as the front remains in place and chances for wetting rains increase dramatically. && .CYS Watches/Warnings/Advisories... WY...Red Flag Warning until 7 PM MDT this evening for WYZ301. NE...None. && SHORT TERM...GCC LONG TERM...RE AVIATION...RE FIRE WEATHER...GCC
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHEYENNE WY 333 AM MDT WED AUG 3 2016 WYZ101>119-040945- 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- 333 AM MDT WED AUG 3 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST CENTRAL WYOMING...SOUTH CENTRAL WYOMING AND SOUTHEAST WYOMING. .DAY ONE...TODAY AND TONIGHT SCATTERED THUNDERSTORMS WILL DEVELOP OVER THE MOUNTAINS OF SOUTHERN WYOMING THIS AFTERNOON AND SPREAD EAST ONTO THE HIGH PLAINS OF SOUTHEAST WYOMING THROUGH THE LATE AFTERNOON AND EARLY EVENING HOURS. THERE IS THE POTENTIAL THAT SOME STORMS COULD BECOME STRONG WITH LOCALLY HEAVY RAINS, SMALL HAIL AND GUSTY WINDS TO NEAR 50 MPH EAST OF THE LARAMIE RANGE. CRITICAL FIRE WEATHER CONDITIONS ARE POSSIBLE OVER CONVERSE AND NIOBRARA COUNTIES THIS AFTERNOON, AND RED FLAG WARNINGS HAVE BEEN ISSUED. OUTDOOR BURNING IS NOT RECOMMENDED. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY A STRONG UPPER LEVEL DISTURBANCE WILL MOVE ACROSS SOUTHEAST WYOMING ON FRIDAY BRINGING AN INCREASED CHANCE FOR THUNDERSTORMS TO THE REGION. THERE IS THE POTENTIAL THAT STORM MOVEMENTS WILL BE FAIRLY SLOW, INCREASING THE RISK FOR LOCALIZED FLOODING ISSUES FRIDAY AFTERNOON AND EVENING. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION TODAY AND TONIGHT IS NOT ANTICIPATED. NEZ002-003-019>021-054-055-095-096-040945- DAWES-BOX BUTTE-SCOTTS BLUFF-BANNER-MORRILL-KIMBALL-CHEYENNE- NORTH SIOUX-SOUTH SIOUX- 333 AM MDT WED AUG 3 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WESTERN NEBRASKA. .DAY ONE...TODAY AND TONIGHT SCATTERED THUNDERSTORMS WILL DEVELOP DURING THE AFTERNOON HOURS AND WILL LINGER INTO THE EARLY EVENING TODAY. THERE IS THE POTENTIAL THAT A FEW STORMS COULD BECOME SEVERE WITH LOCALLY HEAVY RAINS, LARGE HAIL TO THE SIZE OF QUARTERS, AND GUSTY WINDS TO NEAR 60 MPH, ESPECIALLY ACROSS THE NORTHERN PANHANDLE. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY A STRONG UPPER LEVEL DISTURBANCE WILL MOVE ACROSS THE WESTERN NEBRASKA PANHANDLE ON FRIDAY BRINGING AN INCREASED CHANCE FOR THUNDERSTORMS TO THE REGION. THERE IS THE POTENTIAL THAT STORM MOVEMENTS WILL BE FAIRLY SLOW, INCREASING THE RISK FOR LOCALIZED FLOODING ISSUES FRIDAY AFTERNOON AND EVENING, ESPECIALLY ACROSS THE SOUTHERN PANHANDLE. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION TODAY AND TONIGHT IS NOT ANTICIPATED.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 244 PM MDT WED AUG 3 2016 WYZ108-118-119-032130- EAST LARAMIE COUNTY WY-GOSHEN COUNTY WY-CENTRAL LARAMIE COUNTY WY- 244 PM MDT WED AUG 3 2016 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN GOSHEN AND NORTHEASTERN LARAMIE COUNTIES UNTIL 330 PM MDT... AT 243 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 8 MILES WEST OF MERIDEN REST AREA...OR 33 MILES NORTHEAST OF CHEYENNE...MOVING EAST AT 25 MPH. DIME SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THIS STORM. LOCATIONS IMPACTED INCLUDE... LA GRANGE...HAWK SPRINGS CAMPGROUND...GUN BARREL... MERIDEN REST AREA AND HAWK SPRINGS RECREATION AREA. PRECAUTIONARY/PREPAREDNESS ACTIONS... TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS. FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE SHELTER INSIDE A BUILDING OR VEHICLE. && LAT...LON 4143 10460 4164 10464 4182 10410 4142 10406 TIME...MOT...LOC 2043Z 259DEG 20KT 4158 10449 TJT
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 335 PM MDT WED AUG 3 2016 WYZ117-118-032200- SOUTH LARAMIE RANGE FOOTHILLS WY-CENTRAL LARAMIE COUNTY WY- 335 PM MDT WED AUG 3 2016 ...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL LARAMIE COUNTY UNTIL 400 PM MDT... AT 333 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR WHITAKER...OR 15 MILES NORTH OF CHEYENNE...MOVING EAST AT 15 MPH. DIME SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THIS STORM. LOCATIONS IMPACTED INCLUDE... WHITAKER AND RANCHETTES. THIS INCLUDES INTERSTATE 25 IN WYOMING BETWEEN MILE MARKERS 19 AND 34. PRECAUTIONARY/PREPAREDNESS ACTIONS... TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS. FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE SHELTER INSIDE A BUILDING OR VEHICLE. && LAT...LON 4124 10493 4141 10501 4157 10471 4127 10459 TIME...MOT...LOC 2133Z 251DEG 13KT 4136 10488 TJT
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 415 PM MDT WED AUG 3 2016 WYZ118-119-032300- EAST LARAMIE COUNTY WY-CENTRAL LARAMIE COUNTY WY- 415 PM MDT WED AUG 3 2016 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN LARAMIE COUNTY UNTIL 500 PM MDT... AT 415 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 7 MILES NORTHWEST OF HILLSDALE...OR 12 MILES NORTHEAST OF CHEYENNE... MOVING EAST AT 25 MPH. DIME SIZE HAIL AND WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH THIS STORM. LOCATIONS IMPACTED INCLUDE... BURNS...HILLSDALE AND RANCHETTES. THIS INCLUDES INTERSTATE 80 IN WYOMING BETWEEN MILE MARKERS 371 AND 390. PRECAUTIONARY/PREPAREDNESS ACTIONS... TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS. FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE SHELTER INSIDE A BUILDING OR VEHICLE. && LAT...LON 4119 10476 4138 10471 4142 10422 4106 10429 TIME...MOT...LOC 2215Z 275DEG 21KT 4126 10461 TJT
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 430 PM MDT WED AUG 3 2016 NEZ002-095-032315- NORTH SIOUX NE-DAWES NE- 430 PM MDT WED AUG 3 2016 ...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL SIOUX AND SOUTHWESTERN DAWES COUNTIES UNTIL 515 PM MDT... AT 429 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 7 MILES SOUTH OF FORT ROBINSON CAMPGROUND...OR 30 MILES SOUTHWEST OF CHADRON...MOVING EAST AT 25 MPH. NICKEL SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THIS STORM. LOCATIONS IMPACTED INCLUDE... CRAWFORD...BOX BUTTE CAMPGROUND...FORT ROBINSON CAMPGROUND... WHITNEY AND FORT ROBINSON. PRECAUTIONARY/PREPAREDNESS ACTIONS... TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS. FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE SHELTER INSIDE A BUILDING OR VEHICLE. && LAT...LON 4247 10365 4273 10359 4282 10304 4245 10302 TIME...MOT...LOC 2229Z 275DEG 20KT 4258 10349 TJT
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
435 PM MDT WED AUG 03 2016
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0346 PM HAIL 10 N CHEYENNE 41.29N 104.79W
08/03/2016 E0.88 INCH LARAMIE WY NWS EMPLOYEE
0348 PM HAIL 12 N CHEYENNE 41.32N 104.79W
08/03/2016 E0.50 INCH LARAMIE WY TRAINED SPOTTER
&&
KCPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
515 PM MDT WED AUG 03 2016
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0506 PM TSTM WND GST CHADRON 42.83N 103.00W
08/03/2016 M60.00 MPH DAWES NE ASOS
&&
KCThe Rapid City radar (KUDX), 144 km away, was scanning. The volume nearest the first event began at 23:17 UTC.
1 thunderstorm wind. Local standard time, as filed.
Estimated wind gusts of 60 mph were reported 10 miles east of Chadron.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Nebraska in 2016Every state in 2016This day in weather historyWarnings in Nebraska, August 2016
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: 642793.