Alert archive / Kansas / Severe Thunderstorm Watches in 2021
Severe Thunderstorm Watch 126
The Storm Prediction Center issued this severe thunderstorm watch at May 2, 2021, 5:41 PM CDT for 40 counties in Kansas; 19 counties in Nebraska. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- May 2, 2021, 5:41 PM CDT (22:41 UTC)
- Expired
- May 3, 2021, 12:00 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 65 kt
All 59 counties
Barton County, KS, Cheyenne County, KS, Decatur County, KS, Edwards County, KS, Ellis County, KS, Ellsworth County, KS, Finney County, KS, Ford County, KS, Gove County, KS, Graham County, KS, Gray County, KS, Greeley County, KS, Hamilton County, KS, Haskell County, KS, Hodgeman County, KS, Jewell County, KS, Kearny County, KS, Lane County, KS, Lincoln County, KS, Logan County, KS, Mitchell County, KS, Ness County, KS, Norton County, KS, Osborne County, KS, Pawnee County, KS, Phillips County, KS, Rawlins County, KS, Rice County, KS, Rooks County, KS, Rush County, KS, Russell County, KS, Scott County, KS, Sheridan County, KS, Sherman County, KS, Smith County, KS, Stafford County, KS, Thomas County, KS, Trego County, KS, Wallace County, KS, Wichita County, KS, Adams County, NE, Clay County, NE, Dundy County, NE, Fillmore County, NE, Franklin County, NE, Furnas County, NE, Gosper County, NE, Hall County, NE, Hamilton County, NE, Harlan County, NE, Hitchcock County, NE, Kearney County, NE, Nuckolls County, NE, Phelps County, NE, Polk County, NE, Red Willow County, NE, Thayer County, NE, Webster County, NE, York County, NE
The radar
The Goodland radar (KGLD), 112 km from the middle of the area, began a volume at 22:40 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
- 70%
- One or more gusts of 65 knots or more
- 60%
- Ten or more severe hail reports
- 40%
- One or more hailstones of 2 inches or more
- 20%
- Six or more combined severe hail and wind reports
- 90%
Warnings issued inside it
42 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 2, 5:41 PM CDT | Severe Thunderstorm Warning | GID | Osborne, Phillips, Rooks, Smith | 49 min |
| May 2, 6:03 PM CDT | Severe Thunderstorm Warning | GLD | Cheyenne, Rawlins | 72 min |
| May 2, 6:12 PM CDT | Severe Thunderstorm Warning | DDC | Hamilton, Stanton | 48 min |
| May 2, 6:14 PM CDT | Severe Thunderstorm Warning | GLD | Sherman, Thomas | 76 min |
| May 2, 6:29 PM CDT | Severe Thunderstorm Warning | GID | Phillips, Rooks | 46 min |
| May 2, 6:39 PM CDT | Flash Flood Warning | GLD | Hitchcock | 77 min |
| May 2, 6:44 PM CDT | Flash Flood Warning | GLD | Rawlins, Thomas | 93 min |
| May 2, 7:03 PM CDT | Severe Thunderstorm Warning | DDC | Hamilton, Kearny | 42 min |
| May 2, 7:04 PM CDT | Flash Flood Warning | GLD | Thomas | 78 min |
| May 2, 7:22 PM CDT | Severe Thunderstorm Warning | GLD | Logan, Thomas, Wichita | 83 min |
| May 2, 7:33 PM CDT | Severe Thunderstorm Warning | GLD | Decatur, Norton | 72 min |
| May 2, 7:35 PM CDT | Severe Thunderstorm Warning | GID | Furnas, Gosper, Harlan, Phelps | 40 min |
| May 2, 7:40 PM CDT | Severe Thunderstorm Warning | GID | Adams, Kearney | 35 min |
| May 2, 7:41 PM CDT | Severe Thunderstorm Warning | GLD | Red Willow | 34 min |
| May 2, 7:43 PM CDT | Severe Thunderstorm Warning | DDC | Finney, Kearny, Scott | 47 min |
| May 2, 7:43 PM CDT | Severe Thunderstorm Warning | GID | Polk | 32 min |
| May 2, 7:45 PM CDT | Severe Thunderstorm Warning | GLD | Gove, Sheridan | 90 min |
| May 2, 7:54 PM CDT | Severe Thunderstorm Warning | GLD | Graham | 96 min |
| May 2, 7:57 PM CDT | Severe Thunderstorm Warning | GID | Hamilton, York | 33 min |
| May 2, 8:08 PM CDT | Severe Thunderstorm Warning | DDC | Scott | 52 min |
| May 2, 8:10 PM CDT | Severe Thunderstorm Warning | GID | Adams, Kearney | 35 min |
| May 2, 8:12 PM CDT | Severe Thunderstorm Warning | GID | Polk, York | 33 min |
| May 2, 8:13 PM CDT | Severe Thunderstorm Warning | GID | Phillips, Rooks | 47 min |
| May 2, 8:16 PM CDT | Severe Thunderstorm Warning | DDC | Finney, Gray, Haskell, Meade, Seward, Stevens | 44 min |
| May 2, 8:26 PM CDT | Severe Thunderstorm Warning | DDC | Finney | 34 min |
| May 2, 8:39 PM CDT | Severe Thunderstorm Warning | DDC | Finney, Lane | 51 min |
| May 2, 8:43 PM CDT | Severe Thunderstorm Warning | GLD | Norton | 47 min |
| May 2, 8:43 PM CDT | Severe Thunderstorm Warning | GID | Polk, York | 32 min |
| May 2, 8:54 PM CDT | Severe Thunderstorm Warning | GID | Osborne, Phillips, Rooks, Smith | 51 min |
| May 2, 9:11 PM CDT | Flash Flood Warning | GID | Adams, Kearney, Phelps | 6 hr |
| May 2, 9:14 PM CDT | Severe Thunderstorm Warning | GLD | Gove | 46 min |
| May 2, 9:23 PM CDT | Severe Thunderstorm Warning | GLD | Graham | 38 min |
| May 2, 9:36 PM CDT | Severe Thunderstorm Warning | DDC | Clark, Ford, Gray, Hodgeman, Meade | 39 min |
| May 2, 9:42 PM CDT | Severe Thunderstorm Warning | DDC | Ellis, Ness, Rush, Trego | 48 min |
| May 2, 9:45 PM CDT | Severe Thunderstorm Warning | GID | Osborne, Phillips, Rooks, Smith | 45 min |
| May 2, 10:01 PM CDT | Severe Thunderstorm Warning | ICT | Barton, Russell | 59 min |
| May 2, 10:12 PM CDT | Flash Flood Warning | GID | Hamilton | 6 hr |
| May 2, 10:19 PM CDT | Severe Thunderstorm Warning | DDC | Ellis, Hodgeman, Ness, Pawnee, Rush | 41 min |
| May 2, 10:30 PM CDT | Severe Thunderstorm Warning | GID | Jewell, Mitchell, Osborne, Smith | 45 min |
| May 2, 10:41 PM CDT | Severe Thunderstorm Warning | DDC | Edwards, Kiowa, Pratt, Stafford | 49 min |
| May 2, 10:59 PM CDT | Severe Thunderstorm Warning | ICT | Barton, Ellsworth, Lincoln, Rice, Russell | 61 min |
| May 2, 11:15 PM CDT | Severe Thunderstorm Warning | DDC | Barber, Pratt, Stafford | 45 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 12:00Z, 10.7 hours before the alert went out and 179 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
- 1 J/kg
- Mixed-layer CIN
- -668 J/kg
- Mixed-layer LCL
- 1278 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 199 m²/s²
- 0-3 km storm-relative helicity
- 207 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
765
WWUS20 KWNS 022238
SEL6
SPC WW 022238
KSZ000-NEZ000-030500-
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 126
NWS Storm Prediction Center Norman OK
540 PM CDT Sun May 2 2021
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Parts of western into central Kansas
Southern Nebraska
* Effective this Sunday afternoon from 540 PM until Midnight CDT.
* Primary threats include...
Scattered damaging winds and isolated significant gusts to 75
mph likely
Scattered large hail events to 1.5 inches in diameter possible
SUMMARY...Clusters of severe storms are expected to develop this
evening along a cold front, and as outflow surges eastward from
Colorado. The predominant storm mode will be multicell clusters
with the potential for a swath of damaging outflow winds across
Kansas, with isolated significant gusts possible through late
evening.
The severe thunderstorm watch area is approximately along and 75
statute miles north and south of a line from 25 miles southwest of
Goodland KS to 50 miles east northeast of Russell KS. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU6).
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 124...WW 125...
AVIATION...A few severe thunderstorms with hail surface and aloft to
1.5 inches. Extreme turbulence and surface wind gusts to 65 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
27030.
...ThompsonSPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 2, 3:45 PM CDT | Mesoscale Discussion | SPC | Cheyenne, Decatur, Greeley, Logan, Rawlins, Sheridan and 4 more | 90 min |
| May 2, 5:26 PM CDT | Mesoscale Discussion | SPC | Barton, Cheyenne, Decatur, Edwards, Ellis, Ellsworth and 32 more | 64 min |
Nearby
Severe Thunderstorm Watches in Kansas, 2021Severe Thunderstorm Watches in Nebraska, 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.