Alert archive / Nevada / Heavy Snow Warnings in 2005

Heavy Snow Warning 4, NWS Reno, NV

December 18, 2005Washoe County, Nevada; Modoc County, California

NWS Reno, NV issued this heavy snow warning at Dec 18, 2005, 2:20 PM PST for Washoe County, Nevada; Modoc County, California. It was in force for 13 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Dec 18, 2005, 2:20 PM PST (22:20 UTC)
Expired: Dec 19, 2005, 2:59 AM PST
In force: 13 hr
Issued by: NWS Reno, NV

Counties Modoc County, CA, Washoe County, NV

The radar

The Reno radar (KRGX), 165 km from the middle of the area, began a volume at 22:21 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

Medford/Jackson, OR (KMFR), launched 12:00Z, 10.3 hours before the alert went out and 257 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1172 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 147 m²/s²
0-3 km storm-relative helicity: 254 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this heavy snow 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 heavy snow warning went out at Dec 18, 5:25 AM PST, 8 hours 55 minutes earlier.

Area forecast discussion, Dec 18, 5:25 AM PST, 8 hours 55 minutes before

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In the hours before

Local storm report, Dec 18, 1:02 PM PST, 1 hour 18 minutes before

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Special weather statement, Dec 18, 1:47 PM PST, 33 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
Dec 17, 10:34 PM PST	Heavy Snow Warning	REV	Churchill, Douglas, Lyon, Pershing, Storey, Washoe	13 hr
Dec 17, 10:34 PM PST	Snow Advisory	REV	Churchill, Douglas, Lyon, Mineral, Pershing, Storey and 1 more	16 hr

Nearby

Heavy Snow Warnings in Nevada, 2005 Heavy Snow Warnings in California, 2005 Every heavy snow warning in 2005

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.