Alert archive / Montana / Tornado Watches in 2010

Tornado Watch 326

June 16, 20104 states

The Storm Prediction Center issued this tornado watch at Jun 16, 2010, 3:30 PM MDT for 4 states. It was in force for 8 hr.

The area

The outline as issued.

The facts

Issued
Jun 16, 2010, 3:30 PM MDT (21:30 UTC)
Expired
Jun 16, 2010, 11:00 PM MDT
In force
8 hr
Issued by
the Storm Prediction Center
Largest hail expected
3 in
Strongest gust expected
60 kt
All 31 counties

Big Horn County, MT, Carbon County, MT, Carter County, MT, Custer County, MT, Fallon County, MT, Fergus County, MT, Golden Valley County, MT, Musselshell County, MT, Powder River County, MT, Rosebud County, MT, Stillwater County, MT, Treasure County, MT, Yellowstone County, MT, Adams County, ND, Bowman County, ND, Hettinger County, ND, Slope County, ND, Butte County, SD, Custer County, SD, Fall River County, SD, Harding County, SD, Lawrence County, SD, Meade County, SD, Pennington County, SD, Perkins County, SD, Ziebach County, SD, Campbell County, WY, Crook County, WY, Johnson County, WY, Sheridan County, WY, Weston County, WY

The radar

The Billings radar (KBLX), 183 km from the middle of the area, began a volume at 21:31 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
40%
One or more EF2 to EF5 tornadoes
20%
Ten or more severe wind reports
30%
One or more gusts of 65 knots or more
30%
Ten or more severe hail reports
40%
One or more hailstones of 2 inches or more
30%
Six or more combined severe hail and wind reports
70%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jun 16, 3:40 PM MDTSevere Thunderstorm WarningTFXFergus22 min
Jun 16, 3:46 PM MDTSevere Thunderstorm WarningBYZStillwater29 min
Jun 16, 3:58 PM MDTSevere Thunderstorm WarningTFXFergus47 min
Jun 16, 4:01 PM MDTSevere Thunderstorm WarningUNRPerkins59 min
Jun 16, 4:02 PM MDTSevere Thunderstorm WarningBYZCarbon28 min
Jun 16, 4:02 PM MDTSevere Thunderstorm WarningUNRCampbell58 min
Jun 16, 4:27 PM MDTSevere Thunderstorm WarningBYZBig Horn, Carbon63 min
Jun 16, 4:28 PM MDTSevere Thunderstorm WarningBYZGolden Valley, Wheatland32 min
Jun 16, 4:38 PM MDTSevere Thunderstorm WarningUNRZiebach52 min
Jun 16, 4:41 PM MDTSevere Thunderstorm WarningBYZYellowstone49 min
Jun 16, 4:48 PM MDTTornado WarningBYZBig Horn, Carbon27 min
Jun 16, 4:58 PM MDTSevere Thunderstorm WarningUNRPerkins62 min
Jun 16, 5:06 PM MDTTornado WarningUNRZiebach54 min
Jun 16, 5:12 PM MDTTornado WarningUNRPerkins, Ziebach37 min
Jun 16, 5:14 PM MDTSevere Thunderstorm WarningBYZBig Horn, Yellowstone46 min
Jun 16, 5:15 PM MDTTornado WarningBYZBig Horn16 min
Jun 16, 5:19 PM MDTSevere Thunderstorm WarningBYZPowder River30 min
Jun 16, 5:25 PM MDTSevere Thunderstorm WarningBISSlope65 min
Jun 16, 5:36 PM MDTTornado WarningUNRZiebach54 min
Jun 16, 5:53 PM MDTSevere Thunderstorm WarningUNRPerkins67 min
Jun 16, 6:01 PM MDTSevere Thunderstorm WarningBYZBig Horn, Musselshell, Treasure, Yellowstone59 min
Jun 16, 6:08 PM MDTSevere Thunderstorm WarningUNRFall River52 min
Jun 16, 6:10 PM MDTSevere Thunderstorm WarningBYZCuster50 min
Jun 16, 6:12 PM MDTFlash Flood WarningUNRZiebach6 hr
Jun 16, 6:22 PM MDTSevere Thunderstorm WarningUNRZiebach68 min
Jun 16, 6:26 PM MDTTornado WarningUNRZiebach64 min
Jun 16, 6:35 PM MDTSevere Thunderstorm WarningBYZFallon25 min
Jun 16, 6:40 PM MDTSevere Thunderstorm WarningBYZCuster, Rosebud40 min
Jun 16, 6:56 PM MDTSevere Thunderstorm WarningUNRFall River39 min
Jun 16, 6:58 PM MDTFlash Flood WarningUNRZiebach11 hr
Jun 16, 7:10 PM MDTSevere Thunderstorm WarningUNRCuster, Lawrence, Meade, Pennington65 min
Jun 16, 7:22 PM MDTTornado WarningUNRZiebach23 min
Jun 16, 7:31 PM MDTSevere Thunderstorm WarningUNRCuster, Fall River59 min
Jun 16, 7:42 PM MDTSevere Thunderstorm WarningUNRZiebach63 min
Jun 16, 7:56 PM MDTSevere Thunderstorm WarningUNRCuster, Fall River50 min
Jun 16, 8:07 PM MDTSevere Thunderstorm WarningBYZFallon23 min
Jun 16, 8:34 PM MDTSevere Thunderstorm WarningUNRCuster, Pennington41 min
Jun 16, 8:46 PM MDTSevere Thunderstorm WarningUNRCuster, Haakon, Jackson, Pennington, Ziebach74 min
Jun 16, 8:49 PM MDTSevere Thunderstorm WarningBYZFallon56 min
Jun 16, 9:22 PM MDTFlash Flood WarningUNRZiebach9 hr
Jun 16, 9:41 PM MDTSevere Thunderstorm WarningBYZFallon34 min
Jun 16, 10:00 PM MDTSevere Thunderstorm WarningUNRHaakon, Ziebach30 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 15, 6:29 PM MDTMesoscale DiscussionSPCBig Horn, Blaine, Carbon, Chouteau, Fergus, Garfield and 10 more61 min
Jun 16, 12:29 PM MDTMesoscale DiscussionSPCPark, Stillwater91 min
Jun 16, 2:31 PM MDTMesoscale DiscussionSPCBig Horn, Carter, Custer, Dawson, Fallon, Garfield and 12 more89 min
Jun 16, 5:34 PM MDTMesoscale DiscussionSPCDawson, Garfield, McCone, Phillips, Richland, Roosevelt and 2 more86 min
Jun 16, 4:01 PM MDTTornado WatchSPCBennett, Haakon, Jackson, Mellette, Todd7 hr
Jun 16, 1:38 PM MDTMesoscale DiscussionSPCCampbell, Converse, Crook, Goshen, Johnson, Laramie and 4 more67 min

Nearby

Tornado Watches in Montana, 2010Tornado Watches in South Dakota, 2010Tornado Watches in Wyoming, 2010Every tornado watch in 2010

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.