Alert archive / Nebraska / Special Weather Statements in 2019
Special Weather Statement, NWS Cheyenne, WY
NWS Cheyenne, WY issued this special weather statement at Aug 4, 2019, 2:39 PM MDT for Banner County, Nebraska. It was in force for 36 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 4, 2019, 2:39 PM MDT (20:39 UTC)
- Expired
- Aug 4, 2019, 3:15 PM MDT
- In force
- 36 min
- Issued by
- NWS Cheyenne, WY
County Banner County, NE
The radar
The Cheyenne radar (KCYS), 107 km from the middle of the area, began a volume at 20:39 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
Rapid City, SD (KUNR), launched 12:00Z, 8.7 hours before the alert went out and 281 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
- 286 J/kg
- Mixed-layer CIN
- -291 J/kg
- Mixed-layer LCL
- 2343 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- -6 m²/s²
- 0-3 km storm-relative helicity
- 4 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 Aug 4, 1:57 PM MDT, 42 minutes earlier.
Area forecast discussion, Aug 4, 1:57 PM MDT, 42 minutes before
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</html>Hazardous weather outlook, Aug 4, 3:39 AM MDT, 11 hours before
Hazardous Weather Outlook National Weather Service Cheyenne WY 339 AM MDT Sun Aug 4 2019 WYZ103>107-109>118-050945- North Laramie Range-Ferris/Seminoe/Shirley Mountains- Shirley Basin-Central Laramie Range and Southwest Platte County- East 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- 339 AM MDT Sun Aug 4 2019 This hazardous weather outlook is for portions of south central Wyoming and southeast Wyoming. .DAY ONE...TODAY AND TONIGHT General, non-severe thunderstorms possible this afternoon into the early evening. Small hail and brief gusty winds be main concern. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY General thunderstorm to marginal risk of severe weather possible over the next couple days with hail, winds, and heavy rainfall biggest concerns. .Spotter information statement... Spotters are encouraged to report their precipitation, wind damage, and/or hail to the National Weather Service Office in Cheyenne, Wyoming. NEZ002-003-019>021-054-055-095-096-WYZ101-102-108-119-050945- Dawes-Box Butte-Scotts Bluff-Banner-Morrill-Kimball-Cheyenne- North Sioux-South Sioux-Converse County Lower Elevations- Niobrara County-Goshen County-East Laramie County- 339 AM MDT Sun Aug 4 2019 This hazardous weather outlook is for portions of western Nebraska...east central Wyoming and southeast Wyoming. .DAY ONE...TODAY AND TONIGHT Strong to severe thunderstorms possible late afternoon into the evening. Strong, damaging winds, large hail and locally heavy rain are the main threats. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY General thunderstorm to marginal risk of severe weather possible over the next couple days with hail, winds, and heavy rainfall biggest concerns. .Spotter information statement... Spotters are encouraged to report their precipitation, wind damage, and/or hail to the National Weather Service Office in Cheyenne, Wyoming.
In the hours before
Special weather statement, Aug 4, 12:40 PM MDT, 1 hour 59 minutes before
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</html>Special weather statement, Aug 4, 2:38 PM MDT, 1 minute before
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</html>Special weather statement, Aug 4, 2:39 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 |
|---|---|---|---|---|
| Aug 3, 6:22 PM MDT | Special Weather Statement | CYS | Platte | 38 min |
| Aug 3, 6:45 PM MDT | Special Weather Statement | CYS | Laramie | 45 min |
| Aug 3, 8:21 PM MDT | Special Weather Statement | CYS | Niobrara | 39 min |
| Aug 3, 8:28 PM MDT | Special Weather Statement | CYS | Niobrara | 62 min |
| Aug 3, 8:33 PM MDT | Severe Thunderstorm Warning | CYS | Niobrara | 42 min |
| Aug 3, 9:28 PM MDT | Severe Thunderstorm Warning | CYS | Niobrara | 32 min |
| Aug 4, 12:40 PM MDT | Special Weather Statement | CYS | Laramie | 50 min |
| Aug 4, 2:38 PM MDT | Special Weather Statement | CYS | Box Butte | 22 min |
| Aug 4, 3:01 PM MDT | Special Weather Statement | CYS | Dawes | 44 min |
| Aug 4, 3:47 PM MDT | Special Weather Statement | CYS | Dawes | 43 min |
| Aug 4, 3:49 PM MDT | Special Weather Statement | CYS | Box Butte | 41 min |
Nearby
Special Weather Statements in Nebraska, 2019Every special weather statement in 2019
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.