Alert archive / Colorado / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 369, NWS Goodland, KS
NWS Goodland, KS issued this severe thunderstorm warning at Aug 7, 2018, 7:14 PM MDT for Kit Carson County, Colorado. 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 counties it named.
The facts
- Issued
- Aug 7, 2018, 7:14 PM MDT (01:14 UTC)
- Expired
- Aug 7, 2018, 8:00 PM MDT
- In force
- 46 min
- Issued by
- NWS Goodland, KS
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 60.0 mph
County Kit Carson County, CO
The radar
The Goodland radar (KGLD), 78 km from the middle of the area, began a volume at 01:15 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 nearest sounding before it
Denver, CO (KDEN), launched 00:00Z, 1.2 hours before the alert went out and 83 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
What forecasters said that day
The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Aug 7, 7:08 PM MDT, 6 minutes earlier.
Area forecast discussion, Aug 7, 7:08 PM MDT, 6 minutes before
Area Forecast Discussion National Weather Service Goodland KS 708 PM MDT Tue Aug 7 2018 .SHORT TERM...(This evening through Wednesday) Issued at 319 PM MDT Tue Aug 7 2018 Pops have been increased for the overnight period, as a shortwave is expected to pass over our eastern CWA from Yuma County, Colorado to potentially Wichita County, Kansas. Disturbance may be enough lift to aid in thunderstorm development. Convection is expected to develop over eastern Colorado and die off over the plains. Biggest area of favored conditions will be the Palmer Dive and to the east of it. West Northwest wind flow aloft will aid in bringing in dryer area, especially in the mid and upper levels. Model soundings are showing favorable subsidence tomorrow. Pwat values are still sitting ~1" in the low levels. There is currently no well-defined synoptic support for convection. But short term models like the HRRR and HREF are pointing to late night convection from 06 to 12Z . MLCAPE values are ~1000-1500 with about 35-40 knots 0-6 km shear. Expecting isolated storms with marginally severe hail and winds. Tonight, lows will sit in the upper 50s to lower 60s across the Tri-State area. However, depending on convection, this may drop 5 to 10 degrees lower. Lastly, tomorrow's highs will be in the mid to upper 80s, with another round of slight chances for convection in the late afternoon. An isolated severe thunderstorm or two cannot be ruled out. .LONG TERM...(Wednesday night through Tuesday) Issued at 222 PM MDT Tue Aug 7 2018 A shortwave embedded in upper level ridge flow expected over the northern Plains by Thursday morning. This shortwave moves southeast over eastern Kansas by Friday night. During the southeastward progression of this shortwave, thunderstorm chances will exist for parts of the Tri-State region during the afternoon and overnight hours. The shortwave will extend into the southern Plains due to upper level lows settled over Oklahoma and Texas. This trough becomes split Sunday with the main trough over the Midwest and a cutoff low remaining over the southern Plains. By Tuesday morning, the cutoff low over Texas migrates northward towards strong flow aloft creating a shortwave trough over Kansas. The migration of the cutoff low over Kansas could potentially bring precipitation to the Tri-State region Tuesday. && .AVIATION...(For the 00Z TAFS through 00Z Wednesday evening) Issued at 702 PM MDT Tue Aug 7 2018 Thunderstorms will be possible at the GLD terminal between 02-06Z this evening. Otherwise, VFR conditions will prevail. Except for gusty/erratic winds invof any thunderstorms, light/variable winds will prevail. && .GLD WATCHES/WARNINGS/ADVISORIES... KS...NONE. CO...NONE. NE...NONE. && SHORT TERM...EV LONG TERM...NEWMAN AVIATION...VINCENT
Hazardous weather outlook, Aug 7, 6:33 PM MDT, 41 minutes before
Hazardous Weather Outlook...UPDATED National Weather Service Goodland KS 633 PM MDT Tue Aug 7 2018 COZ090>092-KSZ001>004-013>016-027>029-041-042-NEZ079>081-090045- Yuma County-Kit Carson County-Cheyenne County-Cheyenne-Rawlins- Decatur-Norton-Sherman-Thomas-Sheridan-Graham-Wallace-Logan-Gove- Greeley-Wichita-Dundy-Hitchcock-Red Willow- 633 PM MDT Tue Aug 7 2018 /733 PM CDT Tue Aug 7 2018/ This hazardous weather outlook is for extreme southwest Nebraska... northwest Kansas and east central Colorado. .DAY ONE...THROUGH TONIGHT... Isolated severe thunderstorms capable of producing large hail and damaging winds will be possible in eastern Colorado and extreme western Kansas between 6 PM and 11 PM MDT this evening. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH TUESDAY... An isolated severe thunderstorm cannot be ruled out in eastern Colorado and extreme southwestern Kansas late Wednesday afternoon and evening. .SPOTTER INFORMATION STATEMENT... Spotter activation may be required. Vincent
In the hours before
Special weather statement, Aug 7, 5:37 PM MDT, 1 hour 37 minutes before
Special Weather Statement National Weather Service Goodland KS 537 PM MDT TUE AUG 7 2018 COZ091-080000- Kit Carson County CO- 537 PM MDT TUE AUG 7 2018 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN KIT CARSON COUNTY UNTIL 600 PM MDT... At 536 PM MDT, Doppler radar was tracking a strong thunderstorm 11 miles southwest of Cope, or 18 miles north of Flagler, moving south at 25 mph. Dime size hail and wind gusts up to 50 mph will be possible with this storm. This storm will remain over mainly rural areas of northwestern Kit Carson County. LAT...LON 3957 10286 3944 10276 3934 10308 3957 10314 TIME...MOT...LOC 2336Z 338DEG 21KT 3957 10301 024
Special weather statement, Aug 7, 6:33 PM MDT, 41 minutes before
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</html>Local storm report, Aug 7, 7:14 PM MDT, 0 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
714 PM MDT TUE AUG 7 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0632 PM HAIL 13 N FLAGLER 39.48N 103.02W
08/07/2018 E2.00 INCH KIT CARSON CO PUBLIC
GOLF BALL TO HEN EGG SIZE HAIL COVERING THE
GROUND TO A DEPTH OF 6 INCHES.
&&
VINCENTThe office that day
Everything else NWS Goodland, KS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 7, 8:28 PM MDT | Severe Thunderstorm Warning | GLD | Cheyenne | 47 min |
| Aug 7, 9:16 PM MDT | Special Weather Statement | GLD | Cheyenne | 14 min |
| Aug 8, 12:01 AM MDT | Special Weather Statement | GLD | Greeley | 29 min |
| Aug 8, 10:49 AM MDT | Special Weather Statement | GLD | Graham | 41 min |
| Aug 8, 10:54 AM MDT | Severe Thunderstorm Warning | GLD | Graham | 36 min |
| Aug 8, 11:35 AM MDT | Severe Thunderstorm Warning | GLD | Graham | 8 min |
| Aug 8, 1:22 PM MDT | Special Weather Statement | GLD | Gove | 23 min |
| Aug 8, 1:28 PM MDT | Severe Thunderstorm Warning | GLD | Gove | 32 min |
| Aug 8, 1:40 PM MDT | Special Weather Statement | GLD | Wichita | 35 min |
| Aug 8, 1:41 PM MDT | Severe Thunderstorm Warning | GLD | Wichita | 19 min |
| Aug 8, 1:55 PM MDT | Severe Thunderstorm Warning | GLD | Gove, Logan | 20 min |
| Aug 8, 2:16 PM MDT | Special Weather Statement | GLD | Logan | 14 min |
| Aug 8, 2:17 PM MDT | Special Weather Statement | GLD | Wichita | 13 min |
| Aug 8, 2:18 PM MDT | Special Weather Statement | GLD | Thomas | 27 min |
| Aug 8, 2:23 PM MDT | Severe Thunderstorm Warning | GLD | Thomas | 15 min |
| Aug 7, 6:28 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 47 min |
| Aug 7, 6:33 PM MDT | Special Weather Statement | GLD | Yuma | 27 min |
| Aug 7, 7:37 PM MDT | Special Weather Statement | GLD | Yuma | 23 min |
| Aug 7, 7:47 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 43 min |
| Aug 7, 7:49 PM MDT | Severe Thunderstorm Warning | GLD | Cheyenne, Kit Carson | 41 min |
| Aug 8, 12:52 AM MDT | Special Weather Statement | GLD | Yuma | 53 min |
| Aug 8, 3:13 AM MDT | Special Weather Statement | GLD | Yuma | 47 min |
| Aug 8, 3:16 AM MDT | Special Weather Statement | GLD | Kit Carson | 44 min |
| Aug 8, 6:42 AM MDT | Special Weather Statement | GLD | Kit Carson | 63 min |
| Aug 8, 8:05 AM MDT | Special Weather Statement | GLD | Yuma | 40 min |
Nearby
Severe Thunderstorm Warnings in Colorado, 2018Every severe thunderstorm warning 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.