Alert archive / Montana / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 15, NWS Great Falls, MT

July 4, 2009Lewis and Clark County, Montana

NWS Great Falls, MT issued this severe thunderstorm warning at Jul 4, 2009, 2:29 PM MDT for Lewis and Clark County, Montana. It was in force for 30 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 4, 2009, 2:29 PM MDT (20:29 UTC)
Expired
Jul 4, 2009, 2:59 PM MDT
In force
30 min
Issued by
NWS Great Falls, MT
Area
Storm-based polygon

County Lewis and Clark County, MT

The radar

The Great Falls radar (KTFX), 85 km from the middle of the area, began a volume at 20:32 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 forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Great Falls, MT wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 3, 5:48 PM MDT, 20 hours 41 minutes earlier.

Area forecast discussion, Jul 3, 5:48 PM MDT, 20 hours 41 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 3, 7:51 PM MDTSpecial Weather StatementTFXBroadwater54 min
Jul 3, 8:34 PM MDTSpecial Weather StatementTFX56 min
Jul 3, 8:51 PM MDTSevere Thunderstorm WarningTFXBlaine40 min
Jul 4, 1:56 PM MDTSpecial Weather StatementTFXLewis and Clark49 min
Jul 4, 2:21 PM MDTSpecial Weather StatementTFXLewis and Clark39 min
Jul 4, 2:34 PM MDTSpecial Weather StatementTFXJudith Basin41 min
Jul 4, 2:44 PM MDTSpecial Weather StatementTFXCascade46 min
Jul 4, 3:00 PM MDTSpecial Weather StatementTFXLewis and Clark45 min
Jul 4, 3:50 PM MDTSpecial Weather StatementTFXCascade40 min
Jul 4, 4:06 PM MDTSevere Thunderstorm WarningTFXChouteau39 min
Jul 4, 4:13 PM MDTSpecial Weather StatementTFXGlacier47 min
Jul 4, 4:16 PM MDTSpecial Weather StatementTFXJudith Basin59 min
Jul 4, 4:23 PM MDTSevere Thunderstorm WarningTFXGlacier37 min
Jul 4, 4:35 PM MDTSevere Thunderstorm WarningTFXChouteau, Fergus40 min
Jul 4, 4:53 PM MDTSevere Thunderstorm WarningTFXChouteau37 min
Jul 4, 5:03 PM MDTSpecial Weather StatementTFXGlacier42 min
Jul 4, 5:21 PM MDTSpecial Weather StatementTFXHill39 min
Jul 4, 5:21 PM MDTSevere Thunderstorm WarningTFXGlacier, Pondera24 min
Jul 4, 5:29 PM MDTSevere Thunderstorm WarningTFXChouteau5 min
Jul 4, 5:35 PM MDTSevere Thunderstorm WarningTFXChouteau25 min
Jul 4, 5:46 PM MDTSevere Thunderstorm WarningTFXGlacier, Pondera29 min

Nearby

Severe Thunderstorm Warnings in Montana, 2009Every severe thunderstorm warning in 2009

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.