Alert archive / Montana / Tornado Watches in 2005

Tornado Watch 546

June 28, 200521 counties in Montana

The Storm Prediction Center issued this tornado watch at Jun 28, 2005, 1:30 PM MDT for 21 counties in Montana. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Jun 28, 2005, 1:30 PM MDT (19:30 UTC)
Expired
Jun 28, 2005, 8:00 PM MDT
In force
7 hr
Issued by
the Storm Prediction Center
All 21 counties

Big Horn County, MT, Carter County, MT, Custer County, MT, Daniels County, MT, Dawson County, MT, Fallon County, MT, Garfield County, MT, McCone County, MT, Musselshell County, MT, Petroleum County, MT, Phillips County, MT, Powder River County, MT, Prairie County, MT, Richland County, MT, Roosevelt County, MT, Rosebud County, MT, Sheridan County, MT, Treasure County, MT, Valley County, MT, Wibaux County, MT, Yellowstone County, MT

The radar

The Glasgow radar (KGGW), 91 km from the middle of the area, began a volume at 19:29 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

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

IssuedProductOfficeCountiesLasted
Jun 28, 1:31 PM MDTTornado WarningGGWPetroleum51 min
Jun 28, 2:59 PM MDTSevere Thunderstorm WarningGGWPetroleum28 min
Jun 28, 3:18 PM MDTSevere Thunderstorm WarningBYZYellowstone57 min
Jun 28, 3:58 PM MDTSevere Thunderstorm WarningBYZMusselshell32 min
Jun 28, 4:01 PM MDTSevere Thunderstorm WarningBYZBig Horn59 min
Jun 28, 4:10 PM MDTSevere Thunderstorm WarningBYZYellowstone65 min
Jun 28, 4:19 PM MDTTornado WarningBYZBig Horn26 min
Jun 28, 4:38 PM MDTSevere Thunderstorm WarningBYZBig Horn67 min
Jun 28, 4:45 PM MDTSevere Thunderstorm WarningBYZBig Horn60 min
Jun 28, 4:49 PM MDTSevere Thunderstorm WarningGGWPetroleum56 min
Jun 28, 5:02 PM MDTSevere Thunderstorm WarningGGWGarfield, Petroleum58 min
Jun 28, 5:14 PM MDTSevere Thunderstorm WarningBYZTreasure, Yellowstone61 min
Jun 28, 5:17 PM MDTSevere Thunderstorm WarningGGWGarfield, Phillips58 min
Jun 28, 5:28 PM MDTSevere Thunderstorm WarningGGWGarfield, Petroleum62 min
Jun 28, 5:43 PM MDTSevere Thunderstorm WarningBYZBig Horn62 min
Jun 28, 5:45 PM MDTSevere Thunderstorm WarningGGWPhillips, Valley60 min
Jun 28, 5:54 PM MDTSevere Thunderstorm WarningGGWGarfield, Petroleum66 min
Jun 28, 5:59 PM MDTSevere Thunderstorm WarningGGWPhillips61 min
Jun 28, 6:03 PM MDTSevere Thunderstorm WarningBYZRosebud59 min
Jun 28, 6:11 PM MDTSevere Thunderstorm WarningGGWGarfield, Phillips64 min
Jun 28, 6:21 PM MDTSevere Thunderstorm WarningBYZRosebud54 min
Jun 28, 6:36 PM MDTFlash Flood WarningGGWPhillips3 hr
Jun 28, 6:46 PM MDTSevere Thunderstorm WarningGGWGarfield, McCone59 min
Jun 28, 6:47 PM MDTSevere Thunderstorm WarningGGWPhillips, Valley21 min
Jun 28, 6:58 PM MDTSevere Thunderstorm WarningGGWPhillips, Valley62 min
Jun 28, 7:17 PM MDTSevere Thunderstorm WarningBYZCuster, Powder River58 min
Jun 28, 7:39 PM MDTSevere Thunderstorm WarningBYZCuster66 min
Jun 28, 7:39 PM MDTFlash Flood WarningGGWGarfield6 hr
Jun 28, 7:42 PM MDTSevere Thunderstorm WarningGGWGarfield, McCone, Prairie, Valley63 min
Jun 28, 7:49 PM MDTSevere Thunderstorm WarningBYZBig Horn35 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

Great_falls, MT (KTFX), launched 12:00Z, 7.5 hours before the alert went out and 293 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, Great_falls, MT at 12:00Z on 2005-06-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLLFCEL10008507005003002001001 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, Great_falls, MT at 12:00Z on 2005-06-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 56 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
1005 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
56 m²/s²
0-3 km storm-relative helicity
55 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.

IssuedProductOfficeCountiesLasted
Jun 27, 6:30 PM MDTMesoscale DiscussionSPCBig Horn, Blaine, Chouteau, Fergus, Golden Valley, Hill and 8 more2 hr
Jun 28, 11:09 AM MDTMesoscale DiscussionSPCRichland, Roosevelt, Sheridan2 hr
Jun 28, 12:36 PM MDTMesoscale DiscussionSPCBig Horn, Carbon, Golden Valley, Musselshell, Rosebud, Stillwater and 3 more114 min
Jun 28, 5:49 PM MDTMesoscale DiscussionSPCBig Horn, Carter, Custer, Daniels, Dawson, Fallon and 15 more116 min

Nearby

Tornado Watches in Montana, 2005Every tornado watch in 2005

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.