Alert archive / Nevada / Freeze Warnings in 2021
Freeze Warning 1, NWS Reno, NV
NWS Reno, NV issued this freeze warning at May 20, 2021, 2:40 AM PDT for 7 counties in Nevada; 4 counties in California. It took effect at May 21, 2021, 2:00 AM PDT. It was in force for . No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- May 20, 2021, 2:40 AM PDT (09:40 UTC)
- In effect from
- May 21, 2021, 2:00 AM PDT
- Expired
- May 20, 2021, 2:35 PM PDT
- In force
- Issued by
- NWS Reno, NV
Counties Lassen County, CA, Modoc County, CA, Plumas County, CA, Sierra County, CA, Churchill County, NV, Douglas County, NV, Lyon County, NV, Mineral County, NV, Pershing County, NV, Storey County, NV, Washoe County, NV
The radar
The Reno radar (KRGX), 18 km from the middle of the area, began a volume at 09:43 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 00:00Z, 9.7 hours before the alert went out and 126 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
- 2698 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 41 m²/s²
- 0-3 km storm-relative helicity
- 137 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
074 WWUS75 KREV 200940 NPWREV URGENT - WEATHER MESSAGE National Weather Service Reno NV 240 AM PDT Thu May 20 2021 NVZ004-210945- /O.UPG.KREV.FZ.A.0001.210521T0900Z-210521T1600Z/ /O.NEW.KREV.FZ.W.0001.210521T0900Z-210521T1600Z/ /O.NEW.KREV.LW.Y.0035.210520T1700Z-210521T0100Z/ Western Nevada Basin and Range including Pyramid Lake- Including the cities of Fernley, Fallon, Lovelock, Silver Springs, Nixon, and Imlay 240 AM PDT Thu May 20 2021 ...LAKE WIND ADVISORY IN EFFECT FROM 10 AM THIS MORNING TO 6 PM PDT THIS EVENING FOR PYRAMID LAKE... ...FREEZE WARNING IN EFFECT FROM 2 AM TO 9 AM PDT FRIDAY... * CHANGES...Upgrade Freeze Watch to Warning and issued new Lake Wind Advisory for Pyramid Lake. * WHAT...For the Freeze Warning, a wide range of temperatures remain possible Friday morning, anywhere from 28 to 36. For the Lake Wind Advisory, northwest winds 15 to 25 mph with gusts up to 35 mph expected. Waves around 3 feet on Pyramid Lake. * WHERE...Western Nevada Basin and Range including Pyramid Lake. * WHEN...For the Freeze Warning, from 2 AM to 9 AM PDT Friday. For the Lake Wind Advisory, from 10 AM this morning to 6 PM PDT this evening. * IMPACTS...Small boats, kayaks and paddle boards will be prone to capsizing and should remain off lake waters until conditions improve. Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Check lake conditions before heading out and be prepared for a sudden increase in winds and wave heights. Consider postponing boating activities on the lake until a day with less wind. Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing. && $$ CAZ070-071-NVZ001-003-005-210945- /O.UPG.KREV.FZ.A.0001.210521T0900Z-210521T1600Z/ /O.NEW.KREV.FZ.W.0001.210521T0900Z-210521T1600Z/ Surprise Valley California-Lassen-Eastern Plumas- Eastern Sierra Counties-Mineral and Southern Lyon Counties- Greater Reno-Carson City-Minden Area-Northern Washoe County- Including the cities of Cedarville, Eagleville, Fort Bidwell, Portola, Susanville, Westwood, Sierraville, Loyalton, Hawthorne, Yerington, Smith Valley, Mina, Schurz, Sparks, Verdi, Gardnerville, Virginia City, Empire, and Gerlach 240 AM PDT Thu May 20 2021 ...FREEZE WARNING IN EFFECT FROM 2 AM TO 9 AM PDT FRIDAY... * CHANGES...Upgrade Freeze Watch to Warning due to increased confidence in near to sub-freezing temperatures tonight. * WHAT...Low temperatures Friday morning anywhere from 26 to 35. The coldest temperatures will occur in rural or suburban valleys. * WHERE...Lassen-Eastern Plumas-Eastern Sierra Counties, Surprise Valley California, Greater Reno-Carson City-Minden Area, Mineral and Southern Lyon Counties and Northern Washoe County. * WHEN...From 2 AM to 9 AM PDT Friday. * IMPACTS...Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing. && $$ For more information from the National Weather Service visit http://weather.gov/rev
1 follow-up statement
478 WWUS75 KREV 202135 NPWREV URGENT - WEATHER MESSAGE National Weather Service Reno NV 235 PM PDT Thu May 20 2021 NVZ004-210100- /O.CAN.KREV.FZ.W.0001.210521T0900Z-210521T1600Z/ /O.CON.KREV.LW.Y.0035.000000T0000Z-210521T0100Z/ Western Nevada Basin and Range including Pyramid Lake- Including the cities of Fernley, Fallon, Lovelock, Silver Springs, Nixon, and Imlay 235 PM PDT Thu May 20 2021 ...LAKE WIND ADVISORY REMAINS IN EFFECT UNTIL 6 PM PDT THIS EVENING FOR PYRAMID LAKE... * CHANGES...Cancelled freeze warning for Friday morning. * WHAT...Northwest to north winds 10 to 20 mph with gusts to 30 mph. Waves to around 2 feet on Pyramid Lake. * WHERE...Pyramid Lake. * WHEN...Until 6 PM PDT this evening. * ADDITIONAL DETAILS...Due to cloud cover and winds, temperatures Friday morning are only expected to fall to between 33 and 38 degrees; therefore, the freeze warning is cancelled. * IMPACTS...Small boats, kayaks and paddle boards will be prone to capsizing and should remain off lake waters until conditions improve. PRECAUTIONARY/PREPAREDNESS ACTIONS... Check lake conditions before heading out and be prepared for a sudden increase in winds and wave heights. Consider postponing boating activities on the lake until a day with less wind. && $$ CAZ070-071-NVZ001-003-005-202245- /O.CAN.KREV.FZ.W.0001.210521T0900Z-210521T1600Z/ Surprise Valley California-Lassen-Eastern Plumas- Eastern Sierra Counties-Mineral and Southern Lyon Counties- Greater Reno-Carson City-Minden Area-Northern Washoe County- Including the cities of Cedarville, Eagleville, Fort Bidwell, Portola, Susanville, Westwood, Sierraville, Loyalton, Hawthorne, Yerington, Smith Valley, Mina, Schurz, Sparks, Verdi, Gardnerville, Virginia City, Empire, and Gerlach 235 PM PDT Thu May 20 2021 ...FREEZE WARNING IS CANCELLED... Due to extensive cloud cover and winds, temperatures are only expected to fall into the 30s tonight and Friday morning; therefore, the freeze warning is cancelled. However, these temperatures could still affect the most sensitive plants so it is still advised to protect that vegetation especially in rural and suburban locations. $$ For more information from the National Weather Service visit http://weather.gov/rev
The office that day
Everything else NWS Reno, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 20, 2:37 AM PDT | Winter Weather Advisory | REV | Douglas, Washoe | 19 hr |
| May 20, 2:40 AM PDT | Lake Wind Advisory | REV | Churchill, Lyon, Pershing, Washoe | 15 hr |
Nearby
Freeze Warnings in Nevada, 2021Freeze Warnings in California, 2021Every freeze warning 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.