Alert archive / Colorado / Severe Thunderstorm Watches in 2003

Severe Thunderstorm Watch 443

May 30, 20034 states

The Storm Prediction Center issued this severe thunderstorm watch at May 30, 2003, 4:05 PM MDT for 4 states. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: May 30, 2003, 4:05 PM MDT (22:05 UTC)
Expired: May 30, 2003, 10:00 PM MDT
In force: 6 hr
Issued by: the Storm Prediction Center

All 41 counties

Adams County, CO, Arapahoe County, CO, Bent County, CO, Broomfield County, CO, Cheyenne County, CO, Crowley County, CO, Denver County, CO, El Paso County, CO, Elbert County, CO, Kiowa County, CO, Kit Carson County, CO, Lincoln County, CO, Logan County, CO, Morgan County, CO, Otero County, CO, Phillips County, CO, Prowers County, CO, Sedgwick County, CO, Washington County, CO, Weld County, CO, Yuma County, CO, Cheyenne County, KS, Greeley County, KS, Hamilton County, KS, Kearny County, KS, Sherman County, KS, Wallace County, KS, Wichita County, KS, Banner County, NE, Box Butte County, NE, Cheyenne County, NE, Dawes County, NE, Deuel County, NE, Kimball County, NE, Morrill County, NE, Scotts Bluff County, NE, Sioux County, NE, Albany County, WY, Goshen County, WY, Laramie County, WY, Platte County, WY

The radar

The Cheyenne radar (KCYS), 121 km from the middle of the area, began a volume at 22:05 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

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

Issued	Product	Office	Counties	Lasted
May 30, 4:05 PM MDT	Severe Thunderstorm Warning	BOU	Weld	60 min
May 30, 5:04 PM MDT	Severe Thunderstorm Warning	CYS	Albany	41 min
May 30, 5:13 PM MDT	Severe Thunderstorm Warning	BOU	Morgan, Weld	52 min
May 30, 6:21 PM MDT	Severe Thunderstorm Warning	BOU	Morgan, Weld	54 min
May 30, 6:48 PM MDT	Severe Thunderstorm Warning	BOU	Adams	42 min
May 30, 7:11 PM MDT	Severe Thunderstorm Warning	BOU	Morgan, Washington	64 min
May 30, 7:32 PM MDT	Tornado Warning	BOU	Morgan	43 min
May 30, 7:38 PM MDT	Tornado Warning	BOU	Morgan	37 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, 10.1 hours before the alert went out and 103 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: 2 J/kg
Mixed-layer CIN: -397 J/kg
Mixed-layer LCL: 2902 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 2 m²/s²
0-3 km storm-relative helicity: 11 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 30, 1:20 PM MDT	Mesoscale Discussion	SPC	Adams, Arapahoe, Broomfield, Denver, Douglas, Elbert and 7 more	2 hr
May 30, 1:06 PM MDT	Mesoscale Discussion	SPC	Antelope, Box Butte, Burt, Cuming, Madison, Pierce and 4 more	2 hr
May 29, 8:25 PM MDT	Mesoscale Discussion	SPC	Big Horn, Fremont, Hot Springs, Johnson, Natrona, Park and 3 more	65 min

Nearby

Severe Thunderstorm Watches in Colorado, 2003 Severe Thunderstorm Watches in Nebraska, 2003 Severe Thunderstorm Watches in Kansas, 2003 Every severe thunderstorm watch in 2003

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.