Alert archive / Kansas / Severe Thunderstorm Watches in 2012
Severe Thunderstorm Watch 627
The Storm Prediction Center issued this severe thunderstorm watch at Sep 6, 2012, 3:57 PM CDT for 53 counties in Kansas; 20 counties in Nebraska. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Sep 6, 2012, 3:57 PM CDT (20:57 UTC)
- Expired
- Sep 6, 2012, 11:00 PM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 65 kt
All 73 counties
Barber County, KS, Barton County, KS, Clark County, KS, Cloud County, KS, Comanche 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, Grant County, KS, Gray County, KS, Greeley County, KS, Haskell County, KS, Hodgeman County, KS, Jewell County, KS, Kearny County, KS, Kiowa County, KS, Lane County, KS, Lincoln County, KS, Logan County, KS, McPherson County, KS, Meade County, KS, Mitchell County, KS, Morton County, KS, Ness County, KS, Norton County, KS, Osborne County, KS, Ottawa County, KS, Pawnee County, KS, Phillips County, KS, Pratt County, KS, Reno County, KS, Republic County, KS, Rice County, KS, Rooks County, KS, Rush County, KS, Russell County, KS, Saline County, KS, Scott County, KS, Seward County, KS, Sheridan County, KS, Smith County, KS, Stafford County, KS, Stanton County, KS, Stevens County, KS, Thomas County, KS, Trego County, KS, Wallace County, KS, Wichita County, KS, Adams County, NE, Buffalo County, NE, Clay County, NE, Fillmore County, NE, Franklin County, NE, Furnas County, NE, Gosper County, NE, Hall County, NE, Hamilton County, NE, Harlan County, NE, Howard County, NE, Kearney County, NE, Merrick County, NE, Nance County, NE, Nuckolls County, NE, Phelps County, NE, Polk County, NE, Thayer County, NE, Webster County, NE, York County, NE
The radar
The Grand Island radar (KUEX), 122 km from the middle of the area, began a volume at 20:57 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
- 90%
- One or more gusts of 65 knots or more
- 40%
- Ten or more severe hail reports
- 50%
- One or more hailstones of 2 inches or more
- 20%
- Six or more combined severe hail and wind reports
- 95%
Warnings issued inside it
20 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 6, 4:19 PM CDT | Severe Thunderstorm Warning | GLD | Gove, Logan | 41 min |
| Sep 6, 4:49 PM CDT | Severe Thunderstorm Warning | DDC | Lane | 41 min |
| Sep 6, 5:24 PM CDT | Severe Thunderstorm Warning | DDC | Lane, Ness | 51 min |
| Sep 6, 5:29 PM CDT | Severe Thunderstorm Warning | GID | Franklin, Harlan | 46 min |
| Sep 6, 5:38 PM CDT | Severe Thunderstorm Warning | GLD | Graham, Norton | 52 min |
| Sep 6, 6:09 PM CDT | Severe Thunderstorm Warning | DDC | Ness | 51 min |
| Sep 6, 6:15 PM CDT | Severe Thunderstorm Warning | GID | Rooks | 45 min |
| Sep 6, 6:15 PM CDT | Severe Thunderstorm Warning | GID | Smith | 45 min |
| Sep 6, 6:24 PM CDT | Severe Thunderstorm Warning | DDC | Ford, Gray | 51 min |
| Sep 6, 6:29 PM CDT | Severe Thunderstorm Warning | GLD | Graham | 31 min |
| Sep 6, 6:45 PM CDT | Severe Thunderstorm Warning | GID | Smith | 45 min |
| Sep 6, 6:49 PM CDT | Severe Thunderstorm Warning | DDC | Hodgeman, Ness, Pawnee, Rush | 41 min |
| Sep 6, 6:59 PM CDT | Severe Thunderstorm Warning | GID | Rooks | 31 min |
| Sep 6, 7:07 PM CDT | Severe Thunderstorm Warning | DDC | Clark, Ford | 38 min |
| Sep 6, 7:10 PM CDT | Severe Thunderstorm Warning | DDC | Lane, Ness | 50 min |
| Sep 6, 7:28 PM CDT | Severe Thunderstorm Warning | DDC | Edwards, Hodgeman, Ness, Pawnee, Rush | 47 min |
| Sep 6, 7:28 PM CDT | Severe Thunderstorm Warning | GID | Jewell, Mitchell, Osborne, Smith | 47 min |
| Sep 6, 7:44 PM CDT | Severe Thunderstorm Warning | DDC | Clark, Ford, Kiowa | 46 min |
| Sep 6, 7:49 PM CDT | Severe Thunderstorm Warning | DDC | Hodgeman, Ness | 41 min |
| Sep 6, 8:16 PM CDT | Severe Thunderstorm Warning | DDC | Edwards, Ford, Hodgeman, Pawnee | 44 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, 9.0 hours before the alert went out and 196 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
- 542 J/kg
- Mixed-layer CIN
- -222 J/kg
- Mixed-layer LCL
- 1212 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- -17 m²/s²
- 0-3 km storm-relative helicity
- -39 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 |
|---|---|---|---|---|
| Sep 6, 3:10 PM CDT | Mesoscale Discussion | SPC | Decatur, Ellis, Finney, Ford, Gove, Graham and 24 more | 3 hr |
Nearby
Severe Thunderstorm Watches in Kansas, 2012Severe Thunderstorm Watches in Nebraska, 2012Every severe thunderstorm watch in 2012
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.