Alert archive / Colorado / Special Weather Statements in 2020
Special Weather Statement, NWS Goodland, KS
NWS Goodland, KS issued this special weather statement at Aug 20, 2020, 8:13 PM MDT for Cheyenne County, Colorado. It was in force for 47 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 20, 2020, 8:13 PM MDT (02:13 UTC)
- Expired
- Aug 20, 2020, 9:00 PM MDT
- In force
- 47 min
- Issued by
- NWS Goodland, KS
County Cheyenne County, CO
The radar
The Goodland radar (KGLD), 97 km from the middle of the area, began a volume at 02:15 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 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 Goodland, KS wrote its last area forecast discussion before this special weather statement went out at Aug 20, 5:17 PM MDT, 2 hours 56 minutes earlier.
Area forecast discussion, Aug 20, 5:17 PM MDT, 2 hours 56 minutes before
Area Forecast Discussion National Weather Service Goodland KS 517 PM MDT Thu Aug 20 2020 .SHORT TERM...(This evening through Friday) Issued at 145 PM MDT Thu Aug 20 2020 Next shortwave trough rounding the western ridge will arrive this evening accompanied by widely scattered showers and thunderstorms. Environment will be similar to yesterday, with a slight uptick in MLCAPE, while DCAPE and effective shear are more or less the same. Expecting wind to be the primary hazard with gusts up to 65 mph possible with stronger storms. Despite a gradual decline in coverage through the evening, isolated showers/storms may persist through the overnight before ending by 12z Saturday. Low temperatures will be in the 60s. Upper ridge nudges into the area on Friday with rising heights. A few of the CAMs suggest isolated thunderstorms developing at peak heating along a surface trough from northeast Colorado into central Nebraska, moving east and weakening Friday evening. Weak instability remains a limiting factor, but cannot rule out an isolated severe wind gust with any storm that develops. Temperatures will warm into the middle to upper 90s and lows Friday night in the 60s again. .LONG TERM...(Saturday through Wednesday) Issued at 131 PM MDT Thu Aug 20 2020 The long term period will see the continuation of the warm and dry pattern we have seen this past week. On Saturday the upper level high will be centered over Arizona with the ridge over majority of the western CONUS. The cut-off low is expected to slowly move east towards the Tennessee Valley setting up northerly flow across the Central Great Plains. The ridge will continue to move east into next week centering over the High Plains region by Tuesday. As the high moves into the Four Corners region early next week, the ridge will extend into central Canada. Wednesday, a shortwave trough will move east along the northern extent of the ridge in Canada sending a cold front south. Looking at current guidance, it doesn't seem like the cold front will make it's way into the Tri-State area. High temperatures will be in the 90s each day. Low temperatures are expected to be in the 60s. Dry conditions are expected through the period. There is some concern for fire weather during the long term period. Relative humidity values are expected to drop down into middle to lower 20s each day in eastern Colorado. Sunday through Tuesday the concern is little higher as the low humidity levels will be co-located with southerly wind gusts approaching 25 mph. && .AVIATION...(For the 00Z TAFS through 00Z Friday evening) Issued at 514 PM MDT Thu Aug 20 2020 VFR conditions forecast for the 0z TAFs. Confidence of storms moving near a TAF site for the evening is low enough to not put in the TAFs. If one of the sites were to have storms move nearby, am thinking it would be KMCK during 3-4z. Otherwise winds will be on the light side through the period. && .GLD WATCHES/WARNINGS/ADVISORIES... KS...NONE. CO...NONE. NE...NONE. && SHORT TERM...024 LONG TERM...KMK AVIATION...JTL
Hazardous weather outlook, Aug 20, 10:34 AM MDT, 9 hours 39 minutes before
Hazardous Weather Outlook National Weather Service Goodland KS 1034 AM MDT Thu Aug 20 2020 COZ090>092-KSZ001>004-013>016-027>029-041-042-NEZ079>081-211645- Yuma County-Kit Carson County-Cheyenne County-Cheyenne-Rawlins- Decatur-Norton-Sherman-Thomas-Sheridan-Graham-Wallace-Logan-Gove- Greeley-Wichita-Dundy-Hitchcock-Red Willow- 1034 AM MDT Thu Aug 20 2020 /1134 AM CDT Thu Aug 20 2020/ This hazardous weather outlook is for extreme southwest Nebraska... northwest Kansas and east central Colorado. .DAY ONE...THIS AFTERNOON AND TONIGHT... There is a Marginal Risk for severe thunderstorms along and west of a line from McCook to Colby and Leoti in the 5 PM MDT (6 PM CDT) to 11 PM MDT (midnight CDT) timeframe. The primary hazard will be wind gusts to 60 mph. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH THURSDAY... No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation may be required.
In the hours before
Special weather statement, Aug 20, 7:24 PM MDT, 49 minutes before
Special Weather Statement
National Weather Service Goodland KS
724 PM MDT Thu Aug 20 2020
COZ092-210215-
Cheyenne County CO-
724 PM MDT Thu Aug 20 2020
...SIGNIFICANT WEATHER ADVISORY FOR WESTERN CHEYENNE COUNTY IN EAST
CENTRAL COLORADO UNTIL 815 PM MDT...
At 723 PM MDT, Doppler radar was tracking a strong thunderstorm 11
miles south of Boyero, or 36 miles south of Flagler, moving southeast
at 30 mph.
Pea size hail and winds in excess of 40 mph will be possible with
this storm.
Locations impacted include...
Kit Carson, Wild Horse and Aroya.
LAT...LON 3869 10316 3904 10316 3904 10311 3863 10259
3861 10261 3861 10313 3864 10317
TIME...MOT...LOC 0123Z 299DEG 25KT 3877 10319
LockhartSpecial weather statement, Aug 20, 8:13 PM MDT, 0 minutes before
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</html>The office that day
Everything else NWS Goodland, KS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 20, 9:01 PM MDT | Special Weather Statement | GLD | Greeley | 29 min |
| Aug 20, 11:47 PM MDT | Special Weather Statement | GLD | Sherman | 13 min |
| Aug 21, 12:18 AM MDT | Special Weather Statement | GLD | Sherman | 27 min |
| Aug 21, 5:40 AM MDT | Special Weather Statement | GLD | Rawlins | 20 min |
| Aug 20, 7:24 PM MDT | Special Weather Statement | GLD | Cheyenne | 51 min |
| Aug 21, 4:48 AM MDT | Special Weather Statement | GLD | Red Willow | 27 min |
Nearby
Special Weather Statements in Colorado, 2020Every special weather statement in 2020
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.