Alert archive / Kansas / Severe Thunderstorm Watches in 2021
Severe Thunderstorm Watch 362
The Storm Prediction Center issued this severe thunderstorm watch at Jul 9, 2021, 9:37 PM CDT for 14 counties in Kansas. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 9, 2021, 9:37 PM CDT (02:37 UTC)
- Expired
- Jul 10, 2021, 2:00 AM CDT
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
Counties Finney County, KS, Gove County, KS, Greeley County, KS, Hamilton County, KS, Kearny County, KS, Lane County, KS, Logan County, KS, Ness County, KS, Scott County, KS, Sherman County, KS, Thomas County, KS, Trego County, KS, Wallace County, KS, Wichita County, KS
The radar
The Goodland radar (KGLD), 66 km from the middle of the area, began a volume at 02:37 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
- 10%
- One or more EF2 to EF5 tornadoes
- 2%
- Ten or more severe wind reports
- 40%
- 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
- 10%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
7 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 9, 10:35 PM CDT | Severe Thunderstorm Warning | GLD | Sherman, Thomas | 40 min |
| Jul 9, 10:39 PM CDT | Severe Thunderstorm Warning | GLD | Logan, Wallace, Wichita | 36 min |
| Jul 9, 11:10 PM CDT | Severe Thunderstorm Warning | GLD | Greeley, Wichita | 50 min |
| Jul 9, 11:12 PM CDT | Severe Thunderstorm Warning | DDC | Hamilton, Stanton | 48 min |
| Jul 9, 11:18 PM CDT | Severe Thunderstorm Warning | DDC | Finney, Kearny, Lane, Scott | 57 min |
| Jul 10, 12:01 AM CDT | Severe Thunderstorm Warning | DDC | Hamilton, Kearny | 44 min |
| Jul 10, 12:23 AM CDT | Severe Thunderstorm Warning | DDC | Finney, Grant, Gray, Haskell, Kearny | 52 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
Dodge City, (KDDC), launched 00:00Z, 2.6 hours before the alert went out and 173 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
- 2169 J/kg
- Mixed-layer CIN
- -247 J/kg
- Mixed-layer LCL
- 2362 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 22 m²/s²
- 0-3 km storm-relative helicity
- 196 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
The text
As transmitted.
811 WWUS20 KWNS 100234 SEL2 SPC WW 100234 COZ000-KSZ000-100700- URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 362 NWS Storm Prediction Center Norman OK 935 PM CDT Fri Jul 9 2021 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of East central Colorado West central Kansas * Effective this Friday night and Saturday morning from 935 PM until 200 AM CDT. * Primary threats include... Scattered damaging wind gusts to 70 mph possible Isolated large hail events to 1.5 inches in diameter possible SUMMARY...Thunderstorm clusters forming in eastern Colorado could pose a threat for damaging outflow gusts and isolated large hail for the next few hours as the storms spread southeastward into western Kansas. The severe thunderstorm watch area is approximately along and 50 statute miles north and south of a line from 40 miles south southwest of Burlington CO to 50 miles south southeast of Hill City KS. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU2). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Severe Thunderstorm Watch means conditions are favorable for severe thunderstorms in and close to the watch area. Persons in these areas should be on the lookout for threatening weather conditions and listen for later statements and possible warnings. Severe thunderstorms can and occasionally do produce tornadoes. && OTHER WATCH INFORMATION...CONTINUE...WW 356...WW 357...WW 358...WW 359...WW 360...WW 361... AVIATION...A few severe thunderstorms with hail surface and aloft to 1.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 31025. ...Thompson
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 9, 8:45 PM CDT | Severe Thunderstorm Watch | SPC | Jewell, Mitchell, Osborne, Phillips, Rooks, Smith | 8 hr |
| Jul 9, 8:49 PM CDT | Mesoscale Discussion | SPC | Gove, Greeley, Hamilton, Kearny, Lane, Logan and 4 more | 86 min |
| Jul 9, 9:12 PM CDT | Mesoscale Discussion | SPC | Atchison, Brown, Clay, Cloud, Doniphan, Jackson and 9 more | 2 hr |
| Jul 9, 9:58 PM CDT | Severe Thunderstorm Watch | SPC | Anderson, Atchison, Brown, Clay, Cloud, Coffey and 22 more | 7 hr |
| Jul 9, 11:39 PM CDT | Mesoscale Discussion | SPC | Finney, Grant, Gray, Greeley, Hamilton, Kearny and 4 more | 66 min |
| Jul 10, 1:10 AM CDT | Mesoscale Discussion | SPC | Edwards, Finney, Ford, Grant, Gray, Hamilton and 10 more | 65 min |
| Jul 10, 1:21 AM CDT | Mesoscale Discussion | SPC | Atchison, Brown, Doniphan, Jackson, Jefferson, Leavenworth and 2 more | 84 min |
| Jul 10, 2:57 AM CDT | Mesoscale Discussion | SPC | Anderson, Clay, Cloud, Coffey, Dickinson, Douglas and 16 more | 93 min |
| Jul 10, 1:20 PM CDT | Mesoscale Discussion | SPC | Atchison, Brown, Doniphan, Marshall, Nemaha, Washington | 115 min |
| Jul 10, 2:17 PM CDT | Mesoscale Discussion | SPC | Allen, Bourbon, Butler, Chautauqua, Cherokee, Cowley and 11 more | 118 min |
| Jul 10, 2:18 PM CDT | Severe Thunderstorm Watch | SPC | Atchison, Brown, Doniphan, Douglas, Geary, Jackson and 10 more | 7 hr |
| Jul 10, 3:02 PM CDT | Severe Thunderstorm Watch | SPC | Allen, Bourbon, Butler, Chautauqua, Cherokee, Cowley and 9 more | 8 hr |
| Jul 10, 5:27 PM CDT | Mesoscale Discussion | SPC | Atchison, Brown, Doniphan, Douglas, Jackson, Jefferson and 9 more | 2 hr |
Nearby
Severe Thunderstorm Watches in Kansas, 2021Every severe thunderstorm watch in 2021
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.