Alert archive / Kansas / Severe Thunderstorm Watches in 2017
Severe Thunderstorm Watch 201
The Storm Prediction Center issued this severe thunderstorm watch at May 9, 2017, 5:51 PM MDT for 7 counties in Colorado; 19 counties in Kansas; Dundy County, Hitchcock County, Red Willow County, Nebraska. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- May 9, 2017, 5:51 PM MDT (23:51 UTC)
- Expired
- May 10, 2017, 1:00 AM MDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 29 counties
Baca County, CO, Bent County, CO, Cheyenne County, CO, Kiowa County, CO, Kit Carson County, CO, Prowers County, CO, Yuma County, CO, Cheyenne County, KS, Decatur County, KS, Gove County, KS, Graham County, KS, Grant County, KS, Greeley County, KS, Hamilton County, KS, Kearny County, KS, Logan County, KS, Morton County, KS, Norton County, KS, Rawlins County, KS, Scott County, KS, Sheridan County, KS, Sherman County, KS, Stanton County, KS, Thomas County, KS, Wallace County, KS, Wichita County, KS, Dundy County, NE, Hitchcock County, NE, Red Willow County, NE
The radar
The Goodland radar (KGLD), 128 km from the middle of the area, began a volume at 23:51 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.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 5%
- One or more EF2 to EF5 tornadoes
- 2%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 20%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 60%
Warnings issued inside it
10 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 9, 5:55 PM MDT | Severe Thunderstorm Warning | PUB | Kiowa | 35 min |
| May 9, 6:09 PM MDT | Severe Thunderstorm Warning | GLD | Cheyenne, Sherman | 51 min |
| May 9, 6:21 PM MDT | Severe Thunderstorm Warning | PUB | Kiowa | 24 min |
| May 9, 6:33 PM MDT | Severe Thunderstorm Warning | GLD | Cheyenne | 42 min |
| May 9, 6:45 PM MDT | Severe Thunderstorm Warning | PUB | Kiowa | 19 min |
| May 9, 6:55 PM MDT | Severe Thunderstorm Warning | GLD | Cheyenne, Rawlins | 36 min |
| May 9, 6:58 PM MDT | Severe Thunderstorm Warning | GLD | Cheyenne | 47 min |
| May 9, 8:47 PM MDT | Severe Thunderstorm Warning | DDC | Morton | 28 min |
| May 9, 10:00 PM MDT | Severe Thunderstorm Warning | DDC | Finney, Grant, Haskell, Kearny, Seward, Stevens | 45 min |
| May 9, 10:43 PM MDT | Severe Thunderstorm Warning | GLD | Decatur, Norton | 25 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Denver, CO (KDEN), launched 12:00Z, 11.9 hours before the alert went out and 195 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 780 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 24 m²/s²
- 0-3 km storm-relative helicity
- -22 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 8, 6:18 PM MDT | Mesoscale Discussion | SPC | Adams, Arapahoe, Baca, Bent, Cheyenne, Crowley and 17 more | 87 min |
| May 9, 9:55 AM MDT | Mesoscale Discussion | SPC | Las Animas | 3 hr |
| May 9, 11:15 AM MDT | Severe Thunderstorm Watch | SPC | Bent, Costilla, Crowley, Huerfano, Las Animas, Otero and 1 more | 9 hr |
| May 9, 2:29 PM MDT | Mesoscale Discussion | SPC | Baca, Bent, Cheyenne, Crowley, Kiowa, Las Animas and 4 more | 91 min |
| May 9, 5:24 PM MDT | Mesoscale Discussion | SPC | Baca, Bent, Cheyenne, Costilla, Crowley, Huerfano and 6 more | 66 min |
Nearby
Severe Thunderstorm Watches in Kansas, 2017Severe Thunderstorm Watches in Colorado, 2017Severe Thunderstorm Watches in Nebraska, 2017Every severe thunderstorm watch 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.