Alert archive / Nebraska / Special Weather Statements in 2018
Special Weather Statement, NWS Cheyenne, WY
NWS Cheyenne, WY issued this special weather statement at Aug 7, 2018, 10:55 PM MDT for Cheyenne County, Nebraska. It was in force for 50 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 7, 2018, 10:55 PM MDT (04:55 UTC)
- Expired
- Aug 7, 2018, 11:45 PM MDT
- In force
- 50 min
- Issued by
- NWS Cheyenne, WY
County Cheyenne County, NE
The radar
The Cheyenne radar (KCYS), 144 km from the middle of the area, began a volume at 04:57 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Denver, CO (KDEN), launched 00:00Z, 4.9 hours before the alert went out and 176 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 1316 J/kg
- Mixed-layer CIN
- -55 J/kg
- Mixed-layer LCL
- 1934 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- -49 m²/s²
- 0-3 km storm-relative helicity
- -27 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -3.3
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement went out, 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 this special weather statement went out at Aug 7, 10:37 PM MDT, 18 minutes earlier.
Area forecast discussion, Aug 7, 10:37 PM MDT, 18 minutes before
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<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
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If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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</html>Hazardous weather outlook, Aug 7, 6:43 AM MDT, 16 hours 12 minutes before
Hazardous Weather Outlook National Weather Service Cheyenne WY 643 AM MDT Tue Aug 7 2018 NEZ002-003-019>021-054-055-095-096-WYZ101>119-081245- 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- 643 AM MDT Tue Aug 7 2018 This hazardous weather outlook is for portions of western Nebraska...east central Wyoming...south central Wyoming and southeast Wyoming. .DAY ONE...TODAY AND TONIGHT Patchy fog can be expected over the high plains of southeast Wyoming and the western Nebraska Panhandle through 9 AM MDT this morning. Visibilities may be reduced to one half mile at times. Motorists are advised to use caution. A few showers and thunderstorms are possible this afternoon and evening, mainly along the Interstate 80 corridor between Laramie and Sidney. Severe weather is not expected. However, a few storms could produce small hail and gusty winds. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY The probability for widespread hazardous weather is low. .Spotter information statement... Spotter activation will not be needed.
In the hours before
Special weather statement, Aug 7, 9:44 PM MDT, 1 hour 11 minutes before
Special Weather Statement National Weather Service Cheyenne WY 944 PM MDT TUE AUG 7 2018 NEZ019-020-WYZ108-080430- Scotts Bluff NE-Banner NE-Goshen County WY- 944 PM MDT TUE AUG 7 2018 ...SPECIAL WEATHER STATEMENT... At 944 PM MDT, Doppler radar was tracking a strong thunderstorm near Stegall, or 13 miles west of Scottsbluff, moving east at 50 mph. Half inch hail and winds in excess of 30 mph will be possible with this storm. Locations impacted include... Scottsbluff, Gering, Terrytown, Minatare, Wildcat Hills State Recreation Area, Hubbard Hill, Stegall, Wildcat Hills Campground, Scotts Bluff National Monument, Harrisburg, Melbeta and McGrew. PRECAUTIONARY/PREPAREDNESS ACTIONS... Torrential rainfall is also occurring with this storm, and may lead to localized flooding. Do not drive your vehicle through flooded roadways. Frequent cloud to ground lightning is occurring with this storm. Lightning can strike 10 miles away from a thunderstorm. Seek a safe shelter inside a building or vehicle. && LAT...LON 4165 10411 4193 10398 4182 10338 4147 10339 TIME...MOT...LOC 0344Z 286DEG 42KT 4182 10391 Braun
Local storm report, Aug 7, 10:03 PM MDT, 52 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
1003 PM MDT TUE AUG 7 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0906 PM HAIL 1 S MERIDEN REST AREA 41.52N 104.32W
08/07/2018 E2.50 INCH LARAMIE WY AMATEUR RADIO
GOLFBALL TO TENNIS BALL SIZED HAIL REPORTED NEAR MERIDEN
ON HIGHWAY 85.
&&
GCLAYCOMSpecial weather statement, Aug 7, 10:12 PM MDT, 43 minutes before
Special Weather Statement
National Weather Service Cheyenne WY
1012 PM MDT TUE AUG 7 2018
NEZ020-054-080500-
Kimball NE-Banner NE-
1012 PM MDT TUE AUG 7 2018
...SPECIAL WEATHER STATEMENT...
At 1012 PM MDT, Doppler radar was tracking strong thunderstorms along
a line extending from 11 miles north of Oliver Campground to 9 miles
south of Oliver Reservoir. Movement was southeast at 40 mph.
Half inch hail and winds in excess of 30 mph will be possible with
these storms.
Locations impacted include...
Kimball, Dix, Oliver Campground, Oliver Reservoir and Kimball
Airport.
This includes Interstate 80 in Nebraska between mile markers 10 and
33.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 4106 10387 4151 10390 4123 10342 4100 10340
4100 10381
TIME...MOT...LOC 0412Z 321DEG 33KT 4139 10384 4109 10382
BraunLocal storm report, Aug 7, 10:27 PM MDT, 28 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE CHEYENNE WY
1027 PM MDT TUE AUG 7 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0405 PM HAIL 2 WSW CHEYENNE 41.13N 104.83W
08/07/2018 E1.00 INCH LARAMIE WY TRAINED SPOTTER
MIX OF DIMES, NICKLES AND QUARTERS. CORRECTED FOR
LOCATION. AT THE SPRADLEY BARR DEALER.
0430 PM FLASH FLOOD 1 ESE CHEYENNE 41.14N 104.77W
08/07/2018 LARAMIE WY PUBLIC
INTERSTECTION OF PERSHING AND COLLEGE. DIME HAIL...HEAVY
RAIN AND FLOODING. WATER UP TO STEPS OF HOUSE.
0437 PM FLASH FLOOD 1 ESE CHEYENNE 41.14N 104.77W
08/07/2018 LARAMIE WY PUBLIC
INTERSTECTION OF COLLEGE AND PERSHING. STREET IS FLOODED
AND COMING OVER CURBS.
0455 PM FLASH FLOOD 2 SSE CHEYENNE 41.12N 104.78W
08/07/2018 LARAMIE WY PUBLIC
RECEIVED VIA TWITTER. OUTSIDE LANES OF FOX FARM ROAD AND
COLLEGE FLOODED. AVENUE C FLOODED.
0459 PM FLASH FLOOD 1 S CHEYENNE 41.13N 104.79W
08/07/2018 LARAMIE WY PUBLIC
CROW CREEK IS FLOODED AND OUT OF BANK AT AMES UNDERPASS.
CORRECTED FOR LOCATION.
0828 PM HAIL 17 SE WHEATLAND 41.88N 104.73W
08/07/2018 E1.50 INCH PLATTE WY PUBLIC
0906 PM HAIL 1 S MERIDEN REST AREA 41.52N 104.32W
08/07/2018 E2.50 INCH LARAMIE WY AMATEUR RADIO
GOLFBALL TO TENNIS BALL SIZED HAIL REPORTED NEAR MERIDEN
ON HIGHWAY 85.
&&
GCLAYCOMSpecial weather statement, Aug 7, 10:32 PM MDT, 23 minutes before
Special Weather Statement National Weather Service Cheyenne WY 1032 PM MDT TUE AUG 7 2018 NEZ019>021-055-080500- Cheyenne NE-Scotts Bluff NE-Morrill NE-Banner NE- 1032 PM MDT TUE AUG 7 2018 ...SPECIAL WEATHER STATEMENT... At 1031 PM MDT, Doppler radar was tracking strong thunderstorms along a line extending from near Wildcat Hills State Recreation Area to near Harrisburg. Movement was east at 20 mph. Half inch hail and winds in excess of 30 mph will be possible with these storms. Locations impacted include... Gering, Bayard, Minatare, Wildcat Hills State Recreation Area, Chimney Rock State Park, Moomaws Corner, Wildcat Hills Campground, South Bayard Junction, Harrisburg, Melbeta and McGrew. PRECAUTIONARY/PREPAREDNESS ACTIONS... Torrential rainfall is also occurring with these storms, and may lead to localized flooding. Do not drive your vehicle through flooded roadways. Frequent cloud to ground lightning is occurring with these storms. Lightning can strike 10 miles away from a thunderstorm. Seek a safe shelter inside a building or vehicle. && LAT...LON 4182 10326 4143 10337 4154 10372 4184 10368 TIME...MOT...LOC 0431Z 283DEG 18KT 4176 10361 4156 10365 Braun
Special weather statement, Aug 7, 10:55 PM MDT, 0 minutes before
Special Weather Statement National Weather Service Cheyenne WY 1055 PM MDT TUE AUG 7 2018 NEZ019>021-054-055-080545- Kimball NE-Cheyenne NE-Scotts Bluff NE-Morrill NE-Banner NE- 1055 PM MDT TUE AUG 7 2018 ...SPECIAL WEATHER STATEMENT... At 1054 PM MDT, Doppler radar was tracking strong thunderstorms along a line extending from South Bayard Junction to near Westplains. Movement was southeast at 35 mph. Half inch hail and winds in excess of 30 mph will be possible with these storms. Locations impacted include... Sidney, Bridgeport, Bayard, Potter, Dalton, Gurley, Sunol, Brownson, Northport, Chimney Rock State Park, Bridgeport State Recreation Area, Colton, Lorenzo, The Intersection Of Highway 385 And 92, Court House And Jail Rocks, Sidney Airport, Redington, South Bayard Junction and Broadwater. This includes Interstate 80 in Nebraska between mile markers 31 and 71. PRECAUTIONARY/PREPAREDNESS ACTIONS... Frequent cloud to ground lightning is occurring with these storms. Lightning can strike 10 miles away from a thunderstorm. Seek a safe shelter inside a building or vehicle. && LAT...LON 4182 10338 4163 10265 4100 10275 4100 10351 TIME...MOT...LOC 0454Z 295DEG 32KT 4173 10333 4085 10346 Braun
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 7, 7:01 PM MDT | Special Weather Statement | CYS | Platte | 29 min |
| Aug 7, 7:33 PM MDT | Special Weather Statement | CYS | Platte | 42 min |
| Aug 7, 7:55 PM MDT | Severe Thunderstorm Warning | CYS | Goshen, Platte | 35 min |
| Aug 7, 8:13 PM MDT | Tornado Warning | CYS | Goshen, Laramie, Platte | 32 min |
| Aug 7, 8:27 PM MDT | Tornado Warning | CYS | Goshen, Laramie, Platte | 33 min |
| Aug 7, 8:28 PM MDT | Severe Thunderstorm Warning | CYS | Goshen, Platte | 32 min |
| Aug 7, 8:45 PM MDT | Severe Thunderstorm Warning | CYS | Goshen, Laramie | 30 min |
| Aug 7, 9:08 PM MDT | Special Weather Statement | CYS | Goshen | 52 min |
| Aug 7, 9:14 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 31 min |
| Aug 7, 9:41 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 34 min |
| Aug 7, 6:59 PM MDT | Special Weather Statement | CYS | Banner | 46 min |
| Aug 7, 7:25 PM MDT | Special Weather Statement | CYS | Banner | 35 min |
| Aug 7, 9:44 PM MDT | Special Weather Statement | CYS | Scotts Bluff | 46 min |
| Aug 7, 10:12 PM MDT | Special Weather Statement | CYS | Kimball | 48 min |
| Aug 7, 10:32 PM MDT | Special Weather Statement | CYS | Banner | 28 min |
| Aug 8, 3:39 AM MDT | Special Weather Statement | CYS | Kimball | 51 min |
| Aug 8, 4:10 AM MDT | Flash Flood Warning | CYS | Banner, Kimball | 3 hr |
| Aug 8, 4:27 AM MDT | Special Weather Statement | CYS | Kimball | 48 min |
| Aug 8, 5:16 AM MDT | Severe Thunderstorm Warning | CYS | Kimball | 44 min |
Nearby
Special Weather Statements in Nebraska, 2018Every special weather statement in 2018
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.