Alert archive / Nebraska / Special Weather Statements in 2021
Special Weather Statement, NWS Cheyenne, WY
NWS Cheyenne, WY issued this special weather statement at Jul 4, 2021, 5:59 PM MDT for Morrill County, Nebraska. It was in force for 46 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
- Jul 4, 2021, 5:59 PM MDT (23:59 UTC)
- Expired
- Jul 4, 2021, 6:45 PM MDT
- In force
- 46 min
- Issued by
- NWS Cheyenne, WY
County Morrill County, NE
The radar
The Cheyenne radar (KCYS), 166 km from the middle of the area, began a volume at 00:01 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
N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 12.0 hours before the alert went out and 226 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
- 524 J/kg
- Mixed-layer CIN
- -290 J/kg
- Mixed-layer LCL
- 1478 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 84 m²/s²
- 0-3 km storm-relative helicity
- 119 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
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 Jul 4, 5:41 PM MDT, 18 minutes earlier.
Area forecast discussion, Jul 4, 5:41 PM MDT, 18 minutes before
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</html>Hazardous weather outlook, Jul 4, 4:59 AM MDT, 13 hours before
Hazardous Weather Outlook National Weather Service Cheyenne WY 459 AM MDT Sun Jul 4 2021 WYZ101-103-105>107-110-112>118-051100- Converse County Lower Elevations-North Laramie Range- Shirley Basin-Central Laramie Range and Southwest Platte County- East Platte County-North Snowy Range Foothills-Sierra Madre Range- Upper North Platte River Basin-Snowy Range-Laramie Valley- South Laramie Range-South Laramie Range Foothills- Central Laramie County- 459 AM MDT Sun Jul 4 2021 This hazardous weather outlook is for portions of east central Wyoming and southeast Wyoming. .DAY ONE...TODAY AND TONIGHT Isolated to widely scattered thunderstorms will develop in the mountains and gradually push east into the high plains this afternoon. Severe thunderstorms are not expected. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY Afternoon showers and thunderstorms are expected Monday and Tuesday before a drier airmass moves into the region. A few strong thunderstorms are possible Monday afternoon and evening. .Spotter information statement... Spotter activation will not be required. NEZ002-003-019>021-054-055-095-096-WYZ102-108-119-051100- Dawes County-Box Butte County-Scotts Bluff County-Banner County- Morrill County-Kimball County-Cheyenne County- Northern Sioux County-Southern Sioux County-Niobrara County- Goshen County-East Laramie County- 459 AM MDT Sun Jul 4 2021 This hazardous weather outlook is for the western Nebraska panhandle and extreme eastern Wyoming. .DAY ONE...TODAY AND TONIGHT A few showers and thunderstorms will gradually push east into the high plains this evening. Severe thunderstorms are not expected. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY Afternoon showers and thunderstorms are expected Monday and Tuesday before a drier airmass moves into the region. A few strong to marginally severe thunderstorms are possible Monday afternoon and evening. .Spotter information statement... Spotter activation will not be required. WYZ104-109-111-051100- Ferris/Seminoe/Shirley Mountains-Central Carbon County- Southwest Carbon County- 459 AM MDT Sun Jul 4 2021 This hazardous weather outlook is for portions of south central Wyoming. .DAY ONE...TODAY AND TONIGHT No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY Thunderstorms will increase in coverage late Monday and into Tuesday. Heavy rainfall and frequent lightning may accompany these thunderstorms as they push east in the afternoon and evening hours. .Spotter information statement... Spotter activation will not be required.
In the hours before
Local storm report, Jul 4, 3:24 PM MDT, 2 hours 35 minutes before
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</html>Local storm report, Jul 4, 3:26 PM MDT, 2 hours 33 minutes before
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</html>Local storm report, Jul 4, 3:34 PM MDT, 2 hours 25 minutes before
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</html>Special weather statement, Jul 4, 4:50 PM MDT, 1 hour 9 minutes before
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</html>Special weather statement, Jul 4, 5:30 PM MDT, 29 minutes before
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</html>Special weather statement, Jul 4, 5:59 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 |
|---|---|---|---|---|
| Jul 4, 12:51 PM MDT | Special Weather Statement | CYS | 39 min | |
| Jul 4, 1:06 PM MDT | Special Weather Statement | CYS | Albany | 39 min |
| Jul 4, 2:13 PM MDT | Special Weather Statement | CYS | Goshen | 47 min |
| Jul 4, 2:14 PM MDT | Special Weather Statement | CYS | Platte | 46 min |
| Jul 4, 2:26 PM MDT | Special Weather Statement | CYS | Laramie | 49 min |
| Jul 4, 3:22 PM MDT | Severe Thunderstorm Warning | CYS | Goshen | 38 min |
| Jul 4, 4:50 PM MDT | Special Weather Statement | CYS | Albany | 40 min |
| Jul 4, 2:06 PM MDT | Severe Thunderstorm Warning | CYS | Scotts Bluff | 54 min |
| Jul 4, 5:30 PM MDT | Special Weather Statement | CYS | Dawes | 45 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.