Alert archive / California / Winter Weather Advisories in 2021
Winter Weather Advisory 4, NWS Reno, NV
NWS Reno, NV issued this winter weather advisory at Jan 25, 2021, 12:30 PM PST for Douglas County, Washoe County, Nevada; 4 counties in California. It took effect at Jan 25, 2021, 4:00 PM PST. It was in force for 12 hr.
The area
The counties it named.
The facts
- Issued
- Jan 25, 2021, 12:30 PM PST (20:30 UTC)
- In effect from
- Jan 25, 2021, 4:00 PM PST
- Expired
- Jan 26, 2021, 4:00 AM PST
- In force
- 12 hr
- Issued by
- NWS Reno, NV
Counties Alpine County, CA, El Dorado County, CA, Nevada County, CA, Placer County, CA, Douglas County, NV, Washoe County, NV
The radar
The Reno radar (KRGX), 86 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.
The nearest sounding before it
Reno, NV (KREV), launched 12:00Z, 8.5 hours before the alert went out and 175 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 555 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 1 m²/s²
- 0-3 km storm-relative helicity
- 12 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this winter weather advisory 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 weather advisory went out at Jan 24, 1:06 PM PST, 23 hours 24 minutes earlier.
Area forecast discussion, Jan 24, 1:06 PM PST, 23 hours 24 minutes before
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</html>The office that day
Everything else NWS Reno, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 25, 4:13 AM PST | Winter Storm Warning | REV | Douglas, Lyon, Storey, Washoe | 4 days |
| Jan 25, 12:30 PM PST | Winter Weather Advisory | REV | Lyon, Mineral | 58 hr |
| Jan 25, 12:33 PM PST | Wind Advisory | REV | Churchill, Lyon, Pershing, Washoe | 57 hr |
Nearby
Winter Weather Advisories in California, 2021Winter Weather Advisories in Nevada, 2021Every winter weather advisory in 2021
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.