Alert archive / Montana / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 42, NWS Great Falls, MT

July 21, 1999Blaine County, Chouteau County, Montana

NWS Great Falls, MT issued this severe thunderstorm warning at Jul 21, 1999, 6:12 PM MDT for Blaine County, Chouteau County, Montana. It was in force for 33 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 21, 1999, 6:12 PM MDT (00:12 UTC)
Expired
Jul 21, 1999, 6:45 PM MDT
In force
33 min
Issued by
NWS Great Falls, MT
Area
Whole counties

Counties Blaine County, MT, Chouteau County, MT

The radar

The Great Falls radar (KTFX), 148 km from the middle of the area, began a volume at 00:11 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jul 21, 3:15 PM MDTSevere Thunderstorm WatchSPC6 hr

The text

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

The office that day

Everything else NWS Great Falls, MT issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 21, 6:34 PM MDTSevere Thunderstorm WarningTFXHill31 min
Jul 21, 6:48 PM MDTSevere Thunderstorm WarningTFXBlaine32 min

Nearby

Severe Thunderstorm Warnings in Montana, 1999Every severe thunderstorm warning in 1999

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.