Alert archive / Colorado / Tornado Watches in 2007

Tornado Watch 228

May 4, 200710 counties in Colorado; 6 counties in Kansas; 9 counties in Nebraska

The Storm Prediction Center issued this tornado watch at May 4, 2007, 5:36 PM MDT for 10 counties in Colorado; 6 counties in Kansas; 9 counties in Nebraska. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued: May 4, 2007, 5:36 PM MDT (23:36 UTC)
Expired: May 5, 2007, 1:00 AM MDT
In force: 7 hr
Issued by: the Storm Prediction Center

All 25 counties

Cheyenne County, CO, Elbert County, CO, Kit Carson County, CO, Lincoln County, CO, Logan County, CO, Morgan County, CO, Phillips County, CO, Sedgwick County, CO, Washington County, CO, Yuma County, CO, Cheyenne County, KS, Logan County, KS, Rawlins County, KS, Sherman County, KS, Thomas County, KS, Wallace County, KS, Chase County, NE, Deuel County, NE, Dundy County, NE, Frontier County, NE, Hayes County, NE, Hitchcock County, NE, Keith County, NE, Lincoln County, NE, Perkins County, NE

The radar

The Goodland radar (KGLD), 78 km from the middle of the area, began a volume at 23:38 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.

Warnings issued inside it

26 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
May 4, 6:39 PM MDT	Severe Thunderstorm Warning	BOU	Lincoln	38 min
May 4, 6:58 PM MDT	Tornado Warning	BOU	Washington	47 min
May 4, 8:02 PM MDT	Severe Thunderstorm Warning	GLD	Yuma	58 min
May 4, 8:15 PM MDT	Tornado Warning	BOU	Lincoln	45 min
May 4, 8:42 PM MDT	Tornado Warning	BOU	Elbert, Lincoln	48 min
May 4, 8:44 PM MDT	Tornado Warning	BOU	Washington	46 min
May 4, 8:59 PM MDT	Tornado Warning	GLD	Kit Carson	31 min
May 4, 9:00 PM MDT	Tornado Warning	BOU	Lincoln	45 min
May 4, 9:27 PM MDT	Tornado Warning	GLD	Kit Carson	33 min
May 4, 9:28 PM MDT	Tornado Warning	BOU	Lincoln	47 min
May 4, 9:32 PM MDT	Tornado Warning	BOU	Washington	43 min
May 4, 9:42 PM MDT	Tornado Warning	GLD	Yuma	48 min
May 4, 10:15 PM MDT	Tornado Warning	BOU	Lincoln	30 min
May 4, 10:26 PM MDT	Tornado Warning	GLD	Yuma	34 min
May 4, 10:29 PM MDT	Severe Thunderstorm Warning	GLD	Kit Carson	38 min
May 4, 11:00 PM MDT	Severe Thunderstorm Warning	BOU	Phillips, Sedgwick	60 min
May 4, 11:01 PM MDT	Tornado Warning	GLD	Yuma	59 min
May 4, 11:22 PM MDT	Tornado Warning	BOU	Phillips, Sedgwick	38 min
May 4, 11:25 PM MDT	Severe Thunderstorm Warning	GLD	Dundy	65 min
May 4, 11:36 PM MDT	Severe Thunderstorm Warning	LBF	Lincoln	54 min
May 4, 11:38 PM MDT	Tornado Warning	GLD	Dundy	35 min
May 4, 11:47 PM MDT	Tornado Warning	LBF	Chase	43 min
May 5, 12:08 AM MDT	Tornado Warning	LBF	Perkins	52 min
May 5, 12:29 AM MDT	Severe Thunderstorm Warning	LBF	Lincoln	61 min
May 5, 12:33 AM MDT	Severe Thunderstorm Warning	LBF	Chase	27 min
May 5, 12:55 AM MDT	Flash Flood Warning	LBF	Lincoln	95 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

Denver, CO (KDNR), launched 12:00Z, 11.6 hours before the alert went out and 65 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1377 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 42 m²/s²
0-3 km storm-relative helicity: 69 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 3, 6:34 PM MDT	Mesoscale Discussion	SPC	Logan, Morgan, Phillips, Sedgwick, Weld	26 min
May 3, 6:43 PM MDT	Tornado Watch	SPC	Adams, Arapahoe, Logan, Morgan, Phillips, Sedgwick and 3 more	5 hr
May 3, 8:57 PM MDT	Mesoscale Discussion	SPC	Cheyenne, Elbert, Kit Carson, Lincoln, Logan, Morgan and 4 more	93 min
May 4, 4:07 PM MDT	Mesoscale Discussion	SPC	Bent, Cheyenne, Crowley, Kiowa, Kit Carson, Lincoln and 4 more	83 min
May 4, 1:53 PM MDT	Mesoscale Discussion	SPC	Barber, Barton, Clark, Comanche, Edwards, Ellis and 27 more	2 hr
May 4, 5:13 PM MDT	Tornado Watch	SPC	Barber, Barton, Clark, Comanche, Edwards, Ellis and 20 more	8 hr
May 4, 12:19 PM MDT	Mesoscale Discussion	SPC	Antelope, Boone, Boyd, Buffalo, Burt, Butler and 32 more	86 min
May 4, 1:24 PM MDT	Tornado Watch	SPC	Antelope, Blaine, Boone, Boyd, Brown, Buffalo and 22 more	7 hr
May 4, 5:20 PM MDT	Mesoscale Discussion	SPC	Antelope, Blaine, Boone, Boyd, Cedar, Custer and 16 more	85 min

Nearby

Tornado Watches in Colorado, 2007 Tornado Watches in Nebraska, 2007 Tornado Watches in Kansas, 2007 Every tornado watch in 2007

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.