Alert archive / Wyoming / Tornado Watches in 2023

Tornado Watch 362

June 23, 2023Carter County, Powder River County, Montana; 8 counties in Nebraska; 11 counties in Wyoming

The Storm Prediction Center issued this tornado watch at Jun 23, 2023, 2:22 PM MDT for Carter County, Powder River County, Montana; 8 counties in Nebraska; 11 counties in Wyoming. It was in force for 9 hr.

The area

The outline as issued.

The facts

Issued: Jun 23, 2023, 2:22 PM MDT (20:22 UTC)
Expired: Jun 23, 2023, 11:00 PM MDT
In force: 9 hr
Issued by: the Storm Prediction Center
Largest hail expected: 3 in
Strongest gust expected: 60 kt

All 21 counties

Carter County, MT, Powder River County, MT, Banner County, NE, Box Butte County, NE, Cheyenne County, NE, Dawes County, NE, Kimball County, NE, Morrill County, NE, Scotts Bluff County, NE, Sioux County, NE, Campbell County, WY, Converse County, WY, Crook County, WY, Goshen County, WY, Johnson County, WY, Laramie County, WY, Natrona County, WY, Niobrara County, WY, Platte County, WY, Sheridan County, WY, Weston County, WY

The radar

The Rapid City radar (KUDX), 185 km from the middle of the area, began a volume at 20:23 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: 60%
One or more gusts of 65 knots or more: 20%
Ten or more severe hail reports: 70%
One or more hailstones of 2 inches or more: 60%
Six or more combined severe hail and wind reports: 95%

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Jun 23, 2:24 PM MDT	Severe Thunderstorm Warning	RIW	Natrona	51 min
Jun 23, 2:28 PM MDT	Severe Thunderstorm Warning	RIW	Johnson, Washakie	15 min
Jun 23, 2:31 PM MDT	Tornado Warning	RIW	Natrona	29 min
Jun 23, 2:41 PM MDT	Severe Thunderstorm Warning	RIW	Johnson	49 min
Jun 23, 2:53 PM MDT	Tornado Warning	RIW	Natrona	37 min
Jun 23, 3:18 PM MDT	Tornado Warning	RIW	Natrona	27 min
Jun 23, 3:37 PM MDT	Severe Thunderstorm Warning	BYZ	Powder River	38 min
Jun 23, 3:39 PM MDT	Tornado Warning Tornado observed	RIW	Natrona	16 min
Jun 23, 3:51 PM MDT	Severe Thunderstorm Warning	CYS	Converse	39 min
Jun 23, 3:52 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Platte	23 min
Jun 23, 4:08 PM MDT	Severe Thunderstorm Warning Considerable damage threat	BYZ	Powder River	29 min
Jun 23, 4:13 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Goshen, Platte	47 min
Jun 23, 4:15 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Goshen, Platte	45 min
Jun 23, 4:26 PM MDT	Severe Thunderstorm Warning	CYS	Converse	49 min
Jun 23, 4:31 PM MDT	Severe Thunderstorm Warning	UNR	Campbell	44 min
Jun 23, 4:44 PM MDT	Tornado Warning Tornado observed	CYS	Converse	12 min
Jun 23, 4:56 PM MDT	Severe Thunderstorm Warning	UNR	Campbell	64 min
Jun 23, 4:58 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Scotts Bluff, Sioux	47 min
Jun 23, 5:13 PM MDT	Tornado Warning Tornado observed	CYS	Goshen, Platte	32 min
Jun 23, 5:40 PM MDT	Severe Thunderstorm Warning	CYS	Converse	50 min
Jun 23, 5:44 PM MDT	Tornado Warning Tornado observed	CYS	Goshen	31 min
Jun 23, 5:50 PM MDT	Severe Thunderstorm Warning	BYZ	Carter	70 min
Jun 23, 5:50 PM MDT	Tornado Warning	UNR	Campbell	40 min
Jun 23, 5:52 PM MDT	Severe Thunderstorm Warning	UNR	Crook	53 min
Jun 23, 6:07 PM MDT	Tornado Warning Tornado observed	CYS	Goshen	23 min
Jun 23, 6:11 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Scotts Bluff, Sioux	49 min
Jun 23, 6:26 PM MDT	Tornado Warning	UNR	Campbell, Weston	49 min
Jun 23, 6:28 PM MDT	Tornado Warning Tornado observedConsiderable damage threat	CYS	Scotts Bluff	32 min
Jun 23, 6:32 PM MDT	Severe Thunderstorm Warning	CYS	Converse	43 min
Jun 23, 6:42 PM MDT	Severe Thunderstorm Warning	UNR	Crook	63 min
Jun 23, 6:48 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Niobrara	42 min
Jun 23, 6:52 PM MDT	Tornado Warning	UNR	Weston	38 min
Jun 23, 6:55 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Converse, Niobrara	50 min
Jun 23, 6:58 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Scotts Bluff, Sioux	47 min
Jun 23, 6:58 PM MDT	Tornado Warning Tornado observedConsiderable damage threat	CYS	Scotts Bluff	32 min
Jun 23, 7:09 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Platte	51 min
Jun 23, 7:19 PM MDT	Severe Thunderstorm Warning	CYS	Niobrara	56 min
Jun 23, 7:21 PM MDT	Tornado Warning Tornado observedConsiderable damage threat	CYS	Scotts Bluff	24 min
Jun 23, 7:26 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Niobrara	49 min
Jun 23, 7:29 PM MDT	Severe Thunderstorm Warning	UNR	Weston	61 min
Jun 23, 7:31 PM MDT	Tornado Warning EmergencyTornado observedCatastrophic damage threat	CYS	Morrill, Scotts Bluff, Sioux	29 min
Jun 23, 7:42 PM MDT	Tornado Warning	UNR	Weston	22 min
Jun 23, 7:45 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Scotts Bluff, Sioux	45 min
Jun 23, 7:56 PM MDT	Tornado Warning Considerable damage threat	CYS	Scotts Bluff	34 min
Jun 23, 8:05 PM MDT	Severe Thunderstorm Warning	CYS	Scotts Bluff, Sioux	40 min
Jun 23, 8:12 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Box Butte, Morrill, Scotts Bluff, Sioux	63 min
Jun 23, 8:15 PM MDT	Tornado Warning	CYS	Scotts Bluff, Sioux	30 min
Jun 23, 8:18 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Cheyenne	57 min
Jun 23, 8:36 PM MDT	Tornado Warning	CYS	Scotts Bluff, Sioux	24 min
Jun 23, 8:44 PM MDT	Severe Thunderstorm Warning	CYS	Niobrara	37 min
Jun 23, 8:48 PM MDT	Severe Thunderstorm Warning	CYS	Cheyenne, Morrill	46 min
Jun 23, 8:55 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Box Butte, Morrill, Scotts Bluff, Sioux	50 min
Jun 23, 8:57 PM MDT	Flash Flood Warning	CYS	Morrill, Scotts Bluff, Sioux	3 hr
Jun 23, 9:12 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Box Butte, Morrill	63 min
Jun 23, 9:15 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Cheyenne	34 min
Jun 23, 9:26 PM MDT	Flash Flood Warning	CYS	Cheyenne	3 hr
Jun 23, 9:26 PM MDT	Tornado Warning	CYS	Box Butte, Morrill	17 min
Jun 23, 9:41 PM MDT	Tornado Warning	CYS	Morrill	11 min
Jun 23, 9:43 PM MDT	Severe Thunderstorm Warning	CYS	Box Butte, Morrill	47 min
Jun 23, 9:52 PM MDT	Severe Thunderstorm Warning	CYS	Banner, Scotts Bluff	38 min
Jun 23, 9:55 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Morrill	39 min
Jun 23, 10:21 PM MDT	Severe Thunderstorm Warning	CYS	Banner, Box Butte, Cheyenne, Kimball, Morrill, Scotts Bluff and 1 more	69 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

Rapid City, SD (KUNR), launched 12:00Z, 8.4 hours before the alert went out and 179 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: 6 J/kg
Mixed-layer CIN: -156 J/kg
Mixed-layer LCL: 846 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 76 m²/s²
0-3 km storm-relative helicity: 92 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
Jun 23, 5:59 PM MDT	Mesoscale Discussion	SPC	Carter, Powder River	91 min
Jun 23, 1:28 PM MDT	Mesoscale Discussion	SPC	Banner, Box Butte, Dawes, Kimball, Morrill, Scotts Bluff and 1 more	2 hr
Jun 23, 4:55 PM MDT	Mesoscale Discussion	SPC	Arthur, Blaine, Box Butte, Brown, Cherry, Dawes and 11 more	2 hr
Jun 23, 5:17 PM MDT	Tornado Watch	SPC	Arthur, Blaine, Brown, Chase, Cherry, Custer and 15 more	8 hr
Jun 23, 12:00 PM MDT	Mesoscale Discussion	SPC	Fremont, Johnson, Sweetwater, Washakie	2 hr

Nearby

Tornado Watches in Wyoming, 2023 Tornado Watches in Nebraska, 2023 Tornado Watches in Montana, 2023 Every 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.