Alert archive / California / Winter Storm Warnings in 2025

Winter Storm Warning 7, NWS Reno, NV

March 29, 2025Douglas County, Washoe County, Nevada; 7 counties in California

NWS Reno, NV issued this winter storm warning at Mar 29, 2025, 2:07 PM PDT for Douglas County, Washoe County, Nevada; 7 counties in California. It took effect at Mar 30, 2025, 5:00 PM PDT. It was in force for 54 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
Mar 29, 2025, 2:07 PM PDT (21:07 UTC)
In effect from
Mar 30, 2025, 5:00 PM PDT
Expired
Apr 1, 2025, 11:00 PM PDT
In force
54 hr
Issued by
NWS Reno, NV

Counties Alpine County, CA, El Dorado County, CA, Lassen County, CA, Nevada County, CA, Placer County, CA, Plumas County, CA, Sierra County, CA, Douglas County, NV, Washoe County, NV

The radar

The Reno radar (KRGX), 80 km from the middle of the area, began a volume at 21:08 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, 9.1 hours before the alert went out and 379 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, Medford/Jackson, OR at 12:00Z on 2025-03-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 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, Medford/Jackson, OR at 12:00Z on 2025-03-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 20 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
1 J/kg
Mixed-layer CIN
-25 J/kg
Mixed-layer LCL
582 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
20 m²/s²
0-3 km storm-relative helicity
75 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 winter storm 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 winter storm warning went out at Mar 29, 2:48 AM PDT, 11 hours 19 minutes earlier.

Area forecast discussion, Mar 29, 2:48 AM PDT, 11 hours 19 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Mar 29, 2:44 AM PDTWinter Storm WatchREVDouglas, Washoe11 hr
Mar 29, 2:07 PM PDTWinter Weather AdvisoryREVDouglas, Lyon, Storey, Washoe3 days
Mar 29, 2:15 PM PDTLake Wind AdvisoryREVChurchill, Douglas, Lyon, Pershing, Washoe30 hr

Nearby

Winter Storm Warnings in California, 2025Winter Storm Warnings in Nevada, 2025Every winter storm warning in 2025

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.