Alert archive / Oklahoma / Severe Thunderstorm Watches in 2015
Severe Thunderstorm Watch 148
The Storm Prediction Center issued this severe thunderstorm watch at May 9, 2015, 7:36 AM CDT for 18 counties in Kansas; 28 counties in Oklahoma; 4 counties in Texas. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- May 9, 2015, 7:36 AM CDT (12:36 UTC)
- Expired
- May 9, 2015, 2:00 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 50 counties
Barber County, KS, Clark County, KS, Comanche County, KS, Edwards County, KS, Finney County, KS, Ford County, KS, Grant County, KS, Gray County, KS, Haskell County, KS, Hodgeman County, KS, Kearny County, KS, Kiowa County, KS, Meade County, KS, Pawnee County, KS, Pratt County, KS, Seward County, KS, Stafford County, KS, Stevens County, KS, Alfalfa County, OK, Beckham County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Cleveland County, OK, Comanche County, OK, Cotton County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Garvin County, OK, Grady County, OK, Greer County, OK, Harmon County, OK, Harper County, OK, Jackson County, OK, Jefferson County, OK, Kiowa County, OK, Major County, OK, McClain County, OK, Oklahoma County, OK, Roger Mills County, OK, Stephens County, OK, Tillman County, OK, Washita County, OK, Woods County, OK, Woodward County, OK, Foard County, TX, Hardeman County, TX, Wichita County, TX, Wilbarger County, TX
The radar
The Dodge City radar (KDDC), 103 km from the middle of the area, began a volume at 12:35 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
- 5%
- Ten or more severe wind reports
- 20%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 40%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 60%
Warnings issued inside it
11 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 9, 11:00 AM CDT | Severe Thunderstorm Warning | DDC | Edwards, Kiowa | 26 min |
| May 9, 11:36 AM CDT | Severe Thunderstorm Warning | DDC | Barber, Comanche, Edwards, Kiowa, Pawnee, Pratt and 1 more | 54 min |
| May 9, 11:53 AM CDT | Severe Thunderstorm Warning | OUN | Comanche, Cotton, Grady, Stephens | 52 min |
| May 9, 12:20 PM CDT | Severe Thunderstorm Warning | OUN | Jefferson, Stephens | 40 min |
| May 9, 12:29 PM CDT | Severe Thunderstorm Warning | OUN | Caddo, Comanche, Kiowa | 46 min |
| May 9, 12:33 PM CDT | Severe Thunderstorm Warning | OUN | Comanche, Jackson, Kiowa, Tillman | 42 min |
| May 9, 12:52 PM CDT | Severe Thunderstorm Warning | OUN | Cotton, Grady, Stephens | 53 min |
| May 9, 1:14 PM CDT | Severe Thunderstorm Warning | OUN | Caddo, Comanche, Kiowa, Washita | 46 min |
| May 9, 1:17 PM CDT | Flash Flood Warning | OUN | Caddo, Canadian, Comanche, Grady, Kiowa, Stephens and 2 more | 3 hr |
| May 9, 1:27 PM CDT | Flash Flood Warning | OUN | Canadian, Cleveland, Garvin, Grady, McClain, Oklahoma | 5 hr |
| May 9, 1:47 PM CDT | Severe Thunderstorm Warning | OUN | Garvin, Grady, McClain, Stephens | 43 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, 0.6 hours before the alert went out and 104 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
- 97 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 535 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 90 m²/s²
- 0-3 km storm-relative helicity
- 74 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 9, 5:51 AM CDT | Mesoscale Discussion | SPC | Barber, Clark, Comanche, Edwards, Finney, Ford and 19 more | 84 min |
| May 9, 11:36 AM CDT | Mesoscale Discussion | SPC | Barber, Edwards, Harper, Kingman, Kiowa, Pawnee and 3 more | 84 min |
| May 9, 12:40 PM CDT | Mesoscale Discussion | SPC | Greeley, Hamilton, Morton, Sherman, Stanton, Wallace and 1 more | 65 min |
| May 9, 12:55 PM CDT | Tornado Watch | SPC | Cheyenne, Clark, Decatur, Finney, Ford, Gove and 25 more | 11 hr |
| May 9, 3:34 PM CDT | Mesoscale Discussion | SPC | Cheyenne, Finney, Grant, Gray, Greeley, Hamilton and 14 more | 56 min |
| May 9, 6:16 PM CDT | Mesoscale Discussion | SPC | Cheyenne, Decatur, Finney, Gove, Grant, Gray and 18 more | 119 min |
| May 8, 7:27 PM CDT | Tornado Watch | SPC | Atoka, Bryan, Carter, Choctaw, Coal, Creek and 18 more | 6 hr |
| May 8, 10:43 PM CDT | Mesoscale Discussion | SPC | Atoka, Bryan, Choctaw, Coal, Haskell, Latimer and 4 more | 92 min |
| May 9, 3:11 AM CDT | Severe Thunderstorm Watch | SPC | Beaver, Cimarron, Texas | 8 hr |
| May 9, 4:03 AM CDT | Mesoscale Discussion | SPC | Comanche, Cotton, Greer, Harmon, Jackson, Kiowa and 1 more | 57 min |
| May 9, 9:41 AM CDT | Mesoscale Discussion | SPC | Atoka, Bryan, Choctaw, Coal, Johnston, LeFlore and 5 more | 2 hr |
| May 9, 1:21 PM CDT | Tornado Watch | SPC | Atoka, Bryan, Caddo, Canadian, Carter, Cleveland and 23 more | 10 hr |
| May 9, 1:58 PM CDT | Mesoscale Discussion | SPC | LeFlore, McCurtain | 92 min |
| May 9, 2:40 PM CDT | Tornado Watch | SPC | McCurtain | 7 hr |
| May 9, 3:32 PM CDT | Mesoscale Discussion | SPC | Bryan, Carter, Coal, Cotton, Garvin, Hughes and 10 more | 118 min |
| May 9, 4:52 PM CDT | Mesoscale Discussion | SPC | Beckham, Greer, Harmon, Roger Mills | 83 min |
| May 9, 5:52 PM CDT | Mesoscale Discussion | SPC | Bryan, Carter, Cotton, Jefferson, Johnston, Love and 1 more | 83 min |
| May 8, 8:42 PM CDT | Mesoscale Discussion | SPC | Andrews, Borden, Callahan, Coke, Coleman, Concho and 28 more | 2 hr |
| May 8, 10:48 PM CDT | Mesoscale Discussion | SPC | Andrews, Borden, Callahan, Coke, Crane, Crockett and 26 more | 87 min |
| May 9, 2:34 AM CDT | Mesoscale Discussion | SPC | Andrews, Bailey, Castro, Cochran, Dallam, Dawson and 14 more | 116 min |
| May 9, 5:06 PM CDT | Mesoscale Discussion | SPC | Cass | 54 min |
| May 9, 6:21 PM CDT | Mesoscale Discussion | SPC | Brown, Coleman, Comanche, Eastland, Erath, Hood and 6 more | 84 min |
Nearby
Severe Thunderstorm Watches in Oklahoma, 2015Severe Thunderstorm Watches in Kansas, 2015Severe Thunderstorm Watches in Texas, 2015Every severe thunderstorm watch in 2015
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.