Alert archive / Colorado / Tornado Watches in 2023

Tornado Watch 207

May 10, 202317 counties in Colorado; 8 counties in Kansas; 7 counties in Nebraska

The Storm Prediction Center issued this tornado watch at May 10, 2023, 1:55 PM MDT for 17 counties in Colorado; 8 counties in Kansas; 7 counties in Nebraska. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
May 10, 2023, 1:55 PM MDT (19:55 UTC)
Expired
May 10, 2023, 9:00 PM MDT
In force
7 hr
Issued by
the Storm Prediction Center
Largest hail expected
3 in
Strongest gust expected
65 kt
All 32 counties

Adams County, CO, Arapahoe County, CO, Cheyenne County, CO, Denver County, CO, Douglas County, CO, El Paso County, CO, Elbert County, CO, Kit Carson County, CO, Lincoln County, CO, Logan County, CO, Morgan County, CO, Phillips County, CO, Sedgwick County, CO, Teller County, CO, Washington County, CO, Weld County, CO, Yuma County, CO, Cheyenne County, KS, Decatur County, KS, Graham County, KS, Norton County, KS, Rawlins County, KS, Sheridan County, KS, Sherman County, KS, Thomas County, KS, Chase County, NE, Dundy County, NE, Frontier County, NE, Hayes County, NE, Hitchcock County, NE, Perkins County, NE, Red Willow County, NE

The radar

The Goodland radar (KGLD), 124 km from the middle of the area, began a volume at 19:55 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
50%
One or more EF2 to EF5 tornadoes
20%
Ten or more severe wind reports
50%
One or more gusts of 65 knots or more
30%
Ten or more severe hail reports
70%
One or more hailstones of 2 inches or more
50%
Six or more combined severe hail and wind reports
95%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
May 10, 2:00 PM MDTSevere Thunderstorm WarningGLDLogan, Thomas45 min
May 10, 2:15 PM MDTTornado WarningBOUDouglas, Jefferson, Park30 min
May 10, 2:16 PM MDTSevere Thunderstorm WarningGLDGraham, Sheridan44 min
May 10, 2:19 PM MDTTornado WarningPUBTeller26 min
May 10, 2:28 PM MDTSevere Thunderstorm WarningBOUDouglas, Jefferson47 min
May 10, 2:30 PM MDTSevere Thunderstorm WarningGLDLogan, Sherman, Thomas, Wallace60 min
May 10, 2:48 PM MDTSevere Thunderstorm WarningPUBTeller27 min
May 10, 2:50 PM MDTSevere Thunderstorm WarningGLDDecatur, Rawlins, Thomas55 min
May 10, 2:52 PM MDTTornado WarningPUBTeller21 min
May 10, 2:56 PM MDTTornado WarningBOUDouglas, Jefferson34 min
May 10, 2:57 PM MDTTornado WarningBOUDouglas33 min
May 10, 3:10 PM MDTTornado WarningPUBEl Paso, Teller20 min
May 10, 3:17 PM MDTFlash Flood WarningGLDThomas4 hr
May 10, 3:22 PM MDTSevere Thunderstorm WarningBOUDouglas38 min
May 10, 3:25 PM MDTSevere Thunderstorm Warning Considerable damage threatGLDCheyenne, Sherman50 min
May 10, 3:26 PM MDTSevere Thunderstorm WarningGLDLogan, Sherman, Thomas, Wallace36 min
May 10, 3:30 PM MDTTornado WarningBOUDouglas, Jefferson15 min
May 10, 3:32 PM MDTTornado WarningBOUDouglas, Elbert28 min
May 10, 3:32 PM MDTTornado WarningBOUArapahoe, Douglas28 min
May 10, 3:36 PM MDTSevere Thunderstorm WarningPUBEl Paso, Teller24 min
May 10, 3:41 PM MDTTornado WarningGLDDecatur, Rawlins19 min
May 10, 3:44 PM MDTSevere Thunderstorm WarningPUBFremont, Teller46 min
May 10, 3:49 PM MDTSevere Thunderstorm Warning Considerable damage threatGLDCheyenne26 min
May 10, 3:57 PM MDTTornado WarningBOUArapahoe, Douglas, Elbert33 min
May 10, 3:59 PM MDTTornado WarningBOUAdams, Arapahoe, Denver31 min
May 10, 4:02 PM MDTSevere Thunderstorm WarningPUBEl Paso, Pueblo43 min
May 10, 4:06 PM MDTSevere Thunderstorm WarningGLDDecatur, Rawlins, Sheridan, Thomas39 min
May 10, 4:09 PM MDTSevere Thunderstorm WarningGLDRed Willow36 min
May 10, 4:12 PM MDTSevere Thunderstorm WarningGLDYuma48 min
May 10, 4:13 PM MDTSevere Thunderstorm WarningPUBEl Paso, Teller32 min
May 10, 4:14 PM MDTTornado WarningGLDDecatur, Sheridan46 min
May 10, 4:28 PM MDTSevere Thunderstorm WarningBOUDouglas, Elbert32 min
May 10, 4:30 PM MDTSevere Thunderstorm WarningBOUAdams, Arapahoe, Elbert30 min
May 10, 4:34 PM MDTSevere Thunderstorm WarningLBFChase41 min
May 10, 4:35 PM MDTSevere Thunderstorm WarningBOUAdams, Arapahoe40 min
May 10, 4:35 PM MDTSevere Thunderstorm Warning Considerable damage threatPUBEl Paso, Pueblo25 min
May 10, 4:37 PM MDTSevere Thunderstorm WarningGLDYuma53 min
May 10, 4:38 PM MDTFlash Flood WarningGLDDecatur, Rawlins, Sheridan, Thomas4 hr
May 10, 4:42 PM MDTSevere Thunderstorm Warning Destructive damage threatGLDDecatur, Norton, Sheridan29 min
May 10, 4:51 PM MDTTornado WarningBOUAdams, Arapahoe24 min
May 10, 4:56 PM MDTSevere Thunderstorm WarningBOUArapahoe, Elbert31 min
May 10, 5:00 PM MDTTornado WarningGLDDecatur, Norton19 min
May 10, 5:01 PM MDTSevere Thunderstorm Warning Considerable damage threatGLDYuma59 min
May 10, 5:02 PM MDTSevere Thunderstorm Warning Considerable damage threatBOUAdams, Morgan43 min
May 10, 5:04 PM MDTTornado WarningBOUAdams, Arapahoe26 min
May 10, 5:06 PM MDTSevere Thunderstorm WarningGLDDecatur, Norton54 min
May 10, 5:09 PM MDTSevere Thunderstorm WarningBOUPhillips, Sedgwick51 min
May 10, 5:19 PM MDTSevere Thunderstorm WarningBOUAdams, Morgan41 min
May 10, 5:30 PM MDTSevere Thunderstorm WarningGLDDecatur, Rawlins, Sheridan, Thomas60 min
May 10, 5:38 PM MDTSevere Thunderstorm Warning Considerable damage threatBOUPhillips, Sedgwick52 min
May 10, 5:49 PM MDTTornado WarningBOUMorgan, Washington26 min
May 10, 5:52 PM MDTTornado WarningBOUMorgan23 min
May 10, 5:55 PM MDTSevere Thunderstorm WarningBOULogan, Phillips50 min
May 10, 5:55 PM MDTSevere Thunderstorm WarningGLDKit Carson35 min
May 10, 6:05 PM MDTSevere Thunderstorm WarningBOUWashington40 min
May 10, 6:11 PM MDTTornado WarningBOUMorgan, Washington34 min
May 10, 6:14 PM MDTTornado WarningBOUMorgan31 min
May 10, 6:18 PM MDTSevere Thunderstorm WarningGLDCheyenne27 min
May 10, 6:22 PM MDTSevere Thunderstorm WarningGLDDecatur, Rawlins, Sheridan, Thomas53 min
May 10, 6:33 PM MDTTornado WarningBOULogan, Morgan27 min
May 10, 6:39 PM MDTTornado WarningBOUWashington36 min
May 10, 6:42 PM MDTSevere Thunderstorm WarningBOULogan, Weld48 min
May 10, 6:44 PM MDTTornado WarningGLDGraham, Sheridan46 min
May 10, 6:55 PM MDTTornado WarningBOULogan, Weld35 min
May 10, 7:15 PM MDTSevere Thunderstorm WarningGLDDecatur, Sheridan60 min
May 10, 7:39 PM MDTFlash Flood Warning Considerable damage threatGLDSheridan66 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

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 7.9 hours before the alert went out and 235 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-pSkew-T log-p diagram, N. Platte/Lee Bi, NE at 12:00Z on 2023-05-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, N. Platte/Lee Bi, NE at 12:00Z on 2023-05-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 57 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
698 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
57 m²/s²
0-3 km storm-relative helicity
298 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.6

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 9, 7:28 PM MDTMesoscale DiscussionSPCAdams, Broomfield, Denver, Weld2 hr
May 10, 12:17 AM MDTMesoscale DiscussionSPCBoulder, Broomfield, Logan, Morgan, Sedgwick, Weld58 min
May 10, 1:25 PM MDTMesoscale DiscussionSPCAdams, Arapahoe, Bent, Boulder, Broomfield, Cheyenne and 26 more2 hr
May 10, 2:21 PM MDTSevere Thunderstorm WatchSPCBaca, Bent, Crowley, Huerfano, Kiowa, Las Animas and 3 more8 hr
May 10, 4:45 PM MDTMesoscale DiscussionSPCAdams, Arapahoe, Cheyenne, Denver, Douglas, Elbert and 9 more90 min
May 10, 2:02 PM MDTMesoscale DiscussionSPCScotts Bluff, Sioux88 min

Nearby

Tornado Watches in Colorado, 2023Tornado Watches in Kansas, 2023Tornado Watches in Nebraska, 2023Every tornado watch in 2023

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.