Alert archive / Montana / Mesoscale Discussions in 2007

Mesoscale Discussion 1275

June 25, 20074 counties in Montana; Divide County, North Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 25, 2007, 9:12 AM MDT for 4 counties in Montana; Divide County, North Dakota. It was in force for 93 min.

The area

The outline as issued.

The facts

Issued
Jun 25, 2007, 9:12 AM MDT (15:12 UTC)
Expired
Jun 25, 2007, 10:45 AM MDT
In force
93 min
Issued by
the Storm Prediction Center

Counties Daniels County, MT, Phillips County, MT, Sheridan County, MT, Valley County, MT, Divide County, ND

The radar

The Glasgow radar (KGGW), 89 km from the middle of the area, began a volume at 15:12 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.

The nearest sounding before it

Glasgow Intl Airport, MT (KGGW), launched 12:00Z, 3.2 hours before the alert went out and 87 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, Glasgow Intl Airport, MT at 12:00Z on 2007-06-25Temperature 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, Glasgow Intl Airport, MT at 12:00Z on 2007-06-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -14 square meters per square second.1939587897Sfc1 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
1254 m above ground
0-6 km bulk shear
66 kt
0-1 km storm-relative helicity
-14 m²/s²
0-3 km storm-relative helicity
100 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 24, 6:48 PM MDTMesoscale DiscussionSPCBig Horn, Carbon, Carter, Custer, Dawson, Fallon and 14 more87 min
Jun 24, 9:47 PM MDTMesoscale DiscussionSPCCarter, Custer, Dawson, Fallon, Fergus, Garfield and 8 more58 min
Jun 24, 10:36 PM MDTSevere Thunderstorm WatchSPCCuster, Dawson, Fallon, Garfield, McCone, Petroleum and 7 more7 hr
Jun 25, 4:48 PM MDTSevere Thunderstorm WatchSPCCarter, Custer, Fallon, Powder River8 hr
Jun 24, 6:11 PM MDTMesoscale DiscussionSPCAdams2 hr
Jun 24, 6:30 PM MDTSevere Thunderstorm WatchSPCAdams, Billings, Bowman, Golden Valley, Grant, Hettinger and 3 more4 hr
Jun 24, 7:11 PM MDTMesoscale DiscussionSPCBenson, Burleigh, Cavalier, Eddy, McHenry, McLean and 10 more64 min
Jun 24, 8:30 PM MDTMesoscale DiscussionSPCAdams, Grant, Hettinger, Sioux, Stark90 min
Jun 25, 2:31 AM MDTMesoscale DiscussionSPCBottineau, Cavalier, Dunn, McHenry, McLean, Mountrail and 6 more89 min
Jun 25, 2:59 PM MDTMesoscale DiscussionSPCBurleigh, Emmons, Grant, Kidder, Logan, Morton and 4 more91 min
Jun 25, 5:57 PM MDTMesoscale DiscussionSPCBenson, Cavalier, Eddy, Nelson, Pembina, Ramsey and 3 more2 hr

Nearby

Mesoscale Discussions in Montana, 2007Mesoscale Discussions in North Dakota, 2007Every mesoscale discussion in 2007

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.