Alert archive / Kansas / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 250, NWS Goodland, KS
NWS Goodland, KS issued this severe thunderstorm warning at Aug 9, 2017, 6:59 PM CDT for Graham County, Norton County, Kansas. It was in force for 42 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 9, 2017, 6:59 PM CDT (23:59 UTC)
- Expired
- Aug 9, 2017, 7:41 PM CDT
- In force
- 42 min
- Issued by
- NWS Goodland, KS
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 70.0 mph
Counties Graham County, KS, Norton County, KS
The radar
The Grand Island radar (KUEX), 149 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 184 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
- 7 J/kg
- Mixed-layer CIN
- -142 J/kg
- Mixed-layer LCL
- 986 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 198 m²/s²
- 0-3 km storm-relative helicity
- 211 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 9, 6:31 PM CDT, 28 minutes earlier.
Area forecast discussion, Aug 9, 6:31 PM CDT, 28 minutes before
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Hazardous Weather Outlook National Weather Service Goodland KS 1015 AM MDT Wed Aug 9 2017 COZ090>092-KSZ001>004-013>016-027>029-041-042-NEZ079>081-101200- Yuma County-Kit Carson County-Cheyenne County-Cheyenne-Rawlins- Decatur-Norton-Sherman-Thomas-Sheridan-Graham-Wallace-Logan-Gove- Greeley-Wichita-Dundy-Hitchcock-Red Willow- 1015 AM MDT Wed Aug 9 2017 /1115 AM CDT Wed Aug 9 2017/ This hazardous weather outlook is for east central Colorado... extreme southwest Nebraska and northwest Kansas. .DAY ONE...THIS AFTERNOON AND TONIGHT... A few severe thunderstorms will be possible this afternoon and evening with large hail and damaging winds the main threat. Locally heavy rainfall is also possible. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH WEDNESDAY... There is a better chance for severe weather Thursday afternoon and evening. Hail up to 2 inches, damaging winds to 80 mph, and localized flash flooding will be the main threats. A few tornadoes will also be possible. Showers and thunderstorms will be possible over parts of the region Friday through early next week. A few severe thunderstorms will be possible each afternoon and evening. .SPOTTER INFORMATION STATEMENT... Spotter activation may be required from 2 PM MDT (3 PM CDT) through 10 PM MDT (11 PM CDT).
In the hours before
Special weather statement, Aug 9, 5:39 PM CDT, 1 hour 20 minutes before
Special Weather Statement National Weather Service Goodland KS 539 PM CDT WED AUG 9 2017 KSZ004-092315- Norton KS- 539 PM CDT WED AUG 9 2017 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN NORTON COUNTY UNTIL 615 PM CDT... At 539 PM CDT, Doppler radar was tracking a strong thunderstorm near Hendley, or 18 miles north of Norton, moving southeast at 25 mph. Half inch hail and wind gusts of 50 to 55 mph will be possible with this storm. Locations impacted include... Almena. PRECAUTIONARY/PREPAREDNESS ACTIONS... Torrential rainfall is also occurring with this storm, and may lead to localized flooding. Do not drive your vehicle through flooded roadways. 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 3980 9983 4000 9998 4000 9963 3992 9963 TIME...MOT...LOC 2239Z 322DEG 21KT 4011 9991
Local storm report, Aug 9, 6:50 PM CDT, 9 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 9, 5:39 PM CDT | Special Weather Statement | GLD | Norton | 36 min |
| Aug 9, 6:19 PM CDT | Severe Thunderstorm Warning | GLD | Norton | 41 min |
Nearby
Severe Thunderstorm Warnings in Kansas, 2017Every severe thunderstorm warning in 2017
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.