Alert archive / Nebraska / Special Weather Statements in 2021
Special Weather Statement, NWS Cheyenne, WY
NWS Cheyenne, WY issued this special weather statement at May 2, 2021, 5:50 PM MDT for Morrill County, Nebraska. It was in force for 40 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
- May 2, 2021, 5:50 PM MDT (23:50 UTC)
- Expired
- May 2, 2021, 6:30 PM MDT
- In force
- 40 min
- Issued by
- NWS Cheyenne, WY
County Morrill County, NE
The radar
The Cheyenne radar (KCYS), 137 km from the middle of the area, began a volume at 23:52 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 (KDNR), launched 12:00Z, 11.8 hours before the alert went out and 188 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1976 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- -89 m²/s²
- 0-3 km storm-relative helicity
- 10 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 May 2, 5:33 PM MDT, 17 minutes earlier.
Area forecast discussion, May 2, 5:33 PM MDT, 17 minutes before
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</html>Hazardous weather outlook, May 2, 4:40 AM MDT, 13 hours 10 minutes before
Hazardous Weather Outlook National Weather Service Cheyenne WY 440 AM MDT Sun May 2 2021 WYZ112-114-116-031045- Sierra Madre Range-Snowy Range-South Laramie Range- 440 AM MDT Sun May 2 2021 This hazardous weather outlook is for portions of south central Wyoming and southeast Wyoming. .DAY ONE...TODAY AND TONIGHT Moderate to heavy snow will develop this afternoon over the Snowy and Sierra Madre ranges and the I-80 summit this evening. Snowfall amounts up to a foot will be possible in the Snowy Mountain Range with 5 to 10 inches in elevations between 8000 and 10000ft. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY The snow should become lighter on Monday and end on Monday evening as the disturbance moves south. More snowfall may develop over the Snowy and Sierra Madre Ranges on Tuesday and Wednesday as another disturbance moves through the area. .Spotter information statement... Skywarn spotter activation is not anticipated today or tonight. WYZ103>106-109>111-113-115-117-031045- 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-Upper North Platte River Basin- Laramie Valley-South Laramie Range Foothills- 440 AM MDT Sun May 2 2021 This hazardous weather outlook is for portions of south central Wyoming and southeast Wyoming. .DAY ONE...TODAY AND TONIGHT Light to moderate snowfall will be possible along the foothills of the Laramie, Snowy and Sierra Madre Ranges tonight. However, snowfall accumulation will generally be 2 inches or less. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY Snow is forecast to become lighter on Monday with more perception in the form of rain/snow mix coming back to the area on Tuesday and Wednesday in the foothills. Little if any accumulation is expected. .Spotter information statement... Skywarn spotter activation is not anticipated today or tonight. NEZ002-003-019>021-054-055-095-096-WYZ101-102-107-108-118-119- 031045- Dawes County-Box Butte County-Scotts Bluff County-Banner County- Morrill County-Kimball County-Cheyenne County- Northern Sioux County-Southern Sioux County- Converse County Lower Elevations-Niobrara County- East Platte County-Goshen County-Central Laramie County- East Laramie County- 440 AM MDT Sun May 2 2021 This hazardous weather outlook is for portions of panhandle Nebraska...east central Wyoming and southeast Wyoming. .DAY ONE...TODAY AND TONIGHT A cluster of strong thunderstorms is expected to move through much of southeast Wyoming and the Nebraska panhandle late this afternoon and evening. Some of these storms may contain small hail and gusty winds. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY No hazardous weather is expected at this time. .Spotter information statement... Skywarn spotter activation is not anticipated today or tonight.
In the hours before
Special weather statement, May 2, 3:45 PM MDT, 2 hours 5 minutes before
Special Weather Statement National Weather Service Cheyenne WY 345 PM MDT Sun May 2 2021 WYZ106-115-022230- Central Laramie Range and Southwest Platte County-Laramie Valley- 345 PM MDT Sun May 2 2021 ...A STRONG THUNDERSTORM WILL AFFECT EAST CENTRAL ALBANY COUNTY... At 345 PM MDT, a strong thunderstorm was located 10 miles south of Wheatland Reservoir 3, or 29 miles north of Laramie, moving northeast at 10 mph. Winds in excess of 40 mph and half inch hail are possible with this storm. This storm will remain over mainly rural areas of east central Albany County. If outdoors, consider seeking shelter inside a building. 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 4167 10566 4176 10574 4189 10559 4174 10541 TIME...MOT...LOC 2145Z 235DEG 11KT 4174 10567 Jamski
Special weather statement, May 2, 3:59 PM MDT, 1 hour 51 minutes before
Special Weather Statement National Weather Service Cheyenne WY 359 PM MDT Sun May 2 2021 WYZ109-022245- Central Carbon County- 359 PM MDT Sun May 2 2021 ...A STRONG THUNDERSTORM WILL AFFECT CENTRAL CARBON COUNTY... At 358 PM MDT, a strong thunderstorm was located near Sinclair, or 11 miles east of Rawlins, moving northeast at 20 mph. Winds in excess of 40 mph and pea size hail are likely with this storm. This storm will remain over mainly rural areas of central Carbon County. This includes Interstate 80 in Wyoming between mile markers 223 and 228. 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 4173 10704 4182 10712 4199 10688 4182 10672 TIME...MOT...LOC 2158Z 237DEG 17KT 4181 10701 Jamski
Special weather statement, May 2, 4:03 PM MDT, 1 hour 47 minutes before
Special Weather Statement
National Weather Service Cheyenne WY
403 PM MDT Sun May 2 2021
WYZ104-105-109-110-022245-
Shirley Basin-North Snowy Range Foothills-Central Carbon
County-Ferris/Seminoe/Shirley Mountains-
403 PM MDT Sun May 2 2021
...A STRONG THUNDERSTORM WILL AFFECT EAST CENTRAL CARBON COUNTY...
At 403 PM MDT, a strong thunderstorm was located over Medicine Bow,
or 50 miles east of Rawlins, moving northeast at 10 mph.
Winds in excess of 40 mph and half inch hail are likely with this
storm.
This storm will be near...
Medicine Bow around 410 PM MDT.
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 4181 10626 4191 10640 4209 10623 4203 10608
4191 10608
TIME...MOT...LOC 2203Z 219DEG 10KT 4190 10625
JamskiSpecial weather statement, May 2, 4:21 PM MDT, 1 hour 29 minutes before
Special Weather Statement
National Weather Service Cheyenne WY
421 PM MDT Sun May 2 2021
NEZ019>021-055-022300-
Cheyenne-Scotts Bluff-Morrill-Banner-
421 PM MDT Sun May 2 2021
...AN AREA OF STRONG THUNDERSTORMS WILL AFFECT SOUTHEASTERN SCOTTS
BLUFF...NORTHWESTERN CHEYENNE...SOUTHWESTERN MORRILL AND NORTHEASTERN
BANNER COUNTIES...
At 419 PM MDT, strong thunderstorms were clustered 7 miles south of
Redington, or 24 miles northeast of Kimball, moving southeast at 20
mph.
Winds in excess of 40 mph and pea to half inch hail are likely with
these storms.
These storms will remain over mainly rural areas of southeastern
Scotts Bluff, northwestern Cheyenne, southwestern Morrill and
northeastern Banner Counties.
If outdoors, consider seeking shelter inside a building.
These storms 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 4127 10326 4153 10344 4168 10348 4177 10326
4163 10308 4144 10294
TIME...MOT...LOC 2219Z 320DEG 16KT 4148 10330
JamskiSpecial weather statement, May 2, 5:01 PM MDT, 49 minutes before
Special Weather Statement National Weather Service Cheyenne WY 501 PM MDT Sun May 2 2021 NEZ021-055-022345- Cheyenne-Morrill- 501 PM MDT Sun May 2 2021 ...AN AREA OF STRONG THUNDERSTORMS WILL AFFECT NORTH CENTRAL CHEYENNE AND SOUTHWESTERN MORRILL COUNTIES... At 500 PM MDT, strong thunderstorms were clustered near Court House And Jail Rocks, or 28 miles north of Sidney, moving southeast at 10 mph. Winds in excess of 40 mph and pea to half inch hail are likely with these storms. These storms will be near... The Intersection Of Highway 385 And 92 around 510 PM MDT. Dalton around 545 PM MDT. If outdoors, consider seeking shelter inside a building. LAT...LON 4167 10335 4173 10310 4147 10272 4134 10316 TIME...MOT...LOC 2300Z 310DEG 11KT 4154 10310 Jamski
Special weather statement, May 2, 5:50 PM MDT, 0 minutes before
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</html>The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 1, 6:29 PM MDT | Special Weather Statement | CYS | Niobrara | 46 min |
| May 2, 3:38 AM MDT | Winter Storm Warning | CYS | Albany, Carbon | 35 hr |
| May 2, 3:38 AM MDT | Winter Weather Advisory | CYS | Albany, Carbon, Laramie | 35 hr |
| May 2, 2:19 PM MDT | Special Weather Statement | CYS | Albany | 26 min |
| May 2, 2:46 PM MDT | Special Weather Statement | CYS | Albany | 44 min |
| May 2, 3:27 PM MDT | Special Weather Statement | CYS | Albany | 33 min |
| May 2, 3:45 PM MDT | Special Weather Statement | CYS | Albany | 45 min |
| May 2, 3:59 PM MDT | Special Weather Statement | CYS | Carbon | 46 min |
| May 2, 4:03 PM MDT | Special Weather Statement | CYS | Albany | 42 min |
| May 1, 7:42 PM MDT | Special Weather Statement | CYS | Sioux | 33 min |
| May 1, 8:16 PM MDT | Special Weather Statement | CYS | Dawes | 44 min |
| May 2, 12:15 PM MDT | Special Weather Statement | CYS | Cheyenne | 45 min |
| May 2, 4:21 PM MDT | Special Weather Statement | CYS | Morrill | 39 min |
| May 2, 5:01 PM MDT | Special Weather Statement | CYS | Morrill | 44 min |
Nearby
Special Weather Statements in Nebraska, 2021Every special weather statement in 2021
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.