Alert archive / Oklahoma / Mesoscale Discussions in 2005

Mesoscale Discussion 619

April 20, 200510 counties in Kansas; 15 counties in Oklahoma; 5 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Apr 20, 2005, 9:51 PM CDT for 10 counties in Kansas; 15 counties in Oklahoma; 5 counties in Texas. It was in force for 84 min.

The area

The outline as issued.

The facts

Issued: Apr 20, 2005, 9:51 PM CDT (02:51 UTC)
Expired: Apr 20, 2005, 11:15 PM CDT
In force: 84 min
Issued by: the Storm Prediction Center

All 30 counties

Barber County, KS, Clark County, KS, Comanche County, KS, Edwards County, KS, Ford County, KS, Kingman County, KS, Kiowa County, KS, Meade County, KS, Pratt County, KS, Reno County, KS, Alfalfa County, OK, Beckham County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Greer County, OK, Harmon County, OK, Harper County, OK, Jackson County, OK, Kiowa County, OK, Major County, OK, Roger Mills County, OK, Washita County, OK, Woods County, OK, Woodward County, OK, Baylor County, TX, Foard County, TX, Hardeman County, TX, Knox County, TX, Wilbarger County, TX

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 2.9 hours before the alert went out and 181 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 81 J/kg
Mixed-layer CIN: -69 J/kg
Mixed-layer LCL: 3303 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 15 m²/s²
0-3 km storm-relative helicity: 79 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 20, 7:25 PM CDT	Mesoscale Discussion	SPC	Cheyenne, Decatur, Gove, Logan, Norton, Rawlins and 4 more	95 min
Apr 20, 9:29 PM CDT	Mesoscale Discussion	SPC	Clay, Cloud, Dickinson, Geary, Jackson, Jewell and 13 more	61 min
Apr 20, 9:45 PM CDT	Severe Thunderstorm Watch	SPC	Atchison, Brown, Clay, Cloud, Dickinson, Douglas and 21 more	7 hr
Apr 20, 11:00 PM CDT	Severe Thunderstorm Watch	SPC	Cheyenne, Decatur, Rawlins	6 hr
Apr 20, 11:50 PM CDT	Mesoscale Discussion	SPC	Brown, Clay, Cloud, Ellis, Geary, Jackson and 15 more	85 min
Apr 21, 12:48 AM CDT	Mesoscale Discussion	SPC	Cheyenne, Decatur, Graham, Norton, Phillips, Rawlins and 4 more	57 min
Apr 21, 1:00 AM CDT	Severe Thunderstorm Watch	SPC	Cheyenne, Decatur, Graham, Norton, Phillips, Rawlins and 4 more	4 hr
Apr 21, 3:34 AM CDT	Mesoscale Discussion	SPC	Brown, Doniphan	116 min
Apr 21, 11:13 AM CDT	Mesoscale Discussion	SPC	Atchison, Brown, Doniphan, Jackson, Jefferson, Marshall and 4 more	2 hr
Apr 21, 11:35 AM CDT	Tornado Watch	SPC	Clay, Cloud, Jackson, Jewell, Marshall, Nemaha and 4 more	5 hr
Apr 21, 1:45 PM CDT	Severe Thunderstorm Watch	SPC	Bourbon, Cherokee, Crawford, Linn	5 hr
Apr 21, 1:48 PM CDT	Mesoscale Discussion	SPC	Atchison, Jackson, Marshall, Nemaha, Pottawatomie, Riley and 1 more	87 min
Apr 21, 3:05 PM CDT	Mesoscale Discussion	SPC	Anderson, Atchison, Brown, Doniphan, Douglas, Franklin and 11 more	85 min
Apr 21, 3:35 PM CDT	Tornado Watch	SPC	Anderson, Atchison, Brown, Doniphan, Douglas, Franklin and 11 more	7 hr
Apr 21, 4:51 PM CDT	Mesoscale Discussion	SPC	Atchison	54 min
Apr 21, 5:52 PM CDT	Mesoscale Discussion	SPC	Atchison, Brown, Doniphan, Douglas, Jackson, Jefferson and 5 more	53 min
Apr 21, 6:10 PM CDT	Tornado Watch	SPC	Bourbon, Cherokee, Crawford, Linn	7 hr
Apr 21, 6:51 PM CDT	Mesoscale Discussion	SPC	Atchison, Brown, Doniphan, Douglas, Franklin, Jackson and 7 more	84 min
Apr 20, 8:45 PM CDT	Mesoscale Discussion	SPC	Caddo, Canadian, Cleveland, Comanche, Cotton, Garfield and 9 more	90 min
Apr 21, 1:23 PM CDT	Mesoscale Discussion	SPC	Adair	67 min
Apr 21, 5:14 PM CDT	Mesoscale Discussion	SPC	Adair, Atoka, Carter, Cherokee, Choctaw, Coal and 25 more	2 hr
Apr 21, 6:15 PM CDT	Severe Thunderstorm Watch	SPC	Adair, Cherokee, Delaware, Haskell, Hughes, Latimer and 9 more	7 hr
Apr 21, 4:04 PM CDT	Mesoscale Discussion	SPC	Bosque, Brown, Callahan, Coleman, Comanche, Concho and 21 more	116 min
Apr 21, 4:40 PM CDT	Severe Thunderstorm Watch	SPC	Brown, Callahan, Coleman, Comanche, Concho, Cooke and 19 more	7 hr

Nearby

Mesoscale Discussions in Oklahoma, 2005 Mesoscale Discussions in Kansas, 2005 Mesoscale Discussions in Texas, 2005 Every mesoscale discussion in 2005

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.