Alert archive / California / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 42, NWS Reno, NV

July 31, 2009Douglas County, Nevada; Alpine County, Mono County, California

NWS Reno, NV issued this severe thunderstorm warning at Jul 31, 2009, 2:53 PM PDT for Douglas County, Nevada; Alpine County, Mono County, California. It was in force for 37 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 31, 2009, 2:53 PM PDT (21:53 UTC)
Expired: Jul 31, 2009, 3:30 PM PDT
In force: 37 min
Issued by: NWS Reno, NV
Area: Storm-based polygon

Counties Alpine County, CA, Mono County, CA, Douglas County, NV

The radar

The Reno radar (KRGX), 141 km from the middle of the area, began a volume at 21:56 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 Reno, NV wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 31, 3:30 AM PDT, 11 hours 23 minutes earlier.

Area forecast discussion, Jul 31, 3:30 AM PDT, 11 hours 23 minutes before

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The office that day

Everything else NWS Reno, NV issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 30, 5:11 PM PDT	Severe Thunderstorm Warning	REV	Washoe	49 min
Jul 30, 5:27 PM PDT	Flash Flood Warning	REV	Washoe	89 min
Jul 30, 6:31 PM PDT	Special Weather Statement	REV		59 min
Jul 31, 3:50 PM PDT	Special Weather Statement	REV	Storey	40 min
Jul 31, 4:33 PM PDT	Special Weather Statement	REV	Storey	27 min
Jul 30, 6:44 PM PDT	Severe Thunderstorm Warning	REV	Lassen, Plumas	46 min
Jul 31, 4:03 PM PDT	Special Weather Statement	REV	Plumas	27 min
Jul 31, 4:29 PM PDT	Special Weather Statement	REV	Sierra	46 min

Nearby

Severe Thunderstorm Warnings in California, 2009 Severe Thunderstorm Warnings in Nevada, 2009 Every 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.