Alert archive / Montana / Severe Thunderstorm Watches in 2000

Severe Thunderstorm Watch 566

July 10, 200013 counties in Montana

The Storm Prediction Center issued this severe thunderstorm watch at Jul 10, 2000, 1:00 PM MDT for 13 counties in Montana. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Jul 10, 2000, 1:00 PM MDT (19:00 UTC)
Expired
Jul 10, 2000, 7:00 PM MDT
In force
6 hr
Issued by
the Storm Prediction Center

Counties Big Horn County, MT, Blaine County, MT, Carbon County, MT, Fergus County, MT, Garfield County, MT, Golden Valley County, MT, Musselshell County, MT, Petroleum County, MT, Phillips County, MT, Stillwater County, MT, Treasure County, MT, Valley County, MT, Yellowstone County, MT

The radar

The Billings radar (KBLX), 84 km from the middle of the area, began a volume at 19:02 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

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

IssuedProductOfficeCountiesLasted
Jul 10, 2:53 PM MDTSevere Thunderstorm WarningTFXBlaine52 min
Jul 10, 3:47 PM MDTSevere Thunderstorm WarningTFXBlaine58 min
Jul 10, 4:08 PM MDTSevere Thunderstorm WarningGGWPhillips67 min
Jul 10, 4:26 PM MDTSevere Thunderstorm WarningBYZBig Horn, Yellowstone64 min
Jul 10, 4:49 PM MDTSevere Thunderstorm WarningTFXBlaine31 min
Jul 10, 5:11 PM MDTSevere Thunderstorm WarningBYZBig Horn64 min
Jul 10, 5:11 PM MDTSevere Thunderstorm WarningGGWPhillips64 min
Jul 10, 5:46 PM MDTTornado WarningGGWValley59 min
Jul 10, 6:01 PM MDTSevere Thunderstorm WarningGGWGarfield59 min
Jul 10, 6:39 PM MDTSevere Thunderstorm WarningBYZMusselshell66 min
Jul 10, 6:44 PM MDTTornado WarningGGWValley61 min

The nearest sounding before it

Great_falls, MT (KTFX), launched 12:00Z, 7.0 hours before the alert went out and 190 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 2000-07-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 256 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 2000-07-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -9 square meters per square second.19395878Sfc1 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
256 J/kg
Mixed-layer CIN
-92 J/kg
Mixed-layer LCL
1535 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
-9 m²/s²
0-3 km storm-relative helicity
16 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 10, 4:00 PM MDTSevere Thunderstorm WatchSPCCarter, Custer, Daniels, Dawson, Fallon, McCone and 7 more6 hr

Nearby

Severe Thunderstorm Watches in Montana, 2000Every severe thunderstorm watch in 2000

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.