Alert archive / California / Red Flag Warnings in 2021
Red Flag Warning 2, NWS Reno, NV
NWS Reno, NV issued this red flag warning at Jun 5, 2021, 11:32 AM PDT for 7 counties in Nevada; 9 counties in California. It took effect at Jun 7, 2021, 12:00 PM PDT. It was in force for 11 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
- Jun 5, 2021, 11:32 AM PDT (18:32 UTC)
- In effect from
- Jun 7, 2021, 12:00 PM PDT
- Expired
- Jun 7, 2021, 11:00 PM PDT
- In force
- 11 hr
- Issued by
- NWS Reno, NV
Counties El Dorado County, CA, Lassen County, CA, Madera County, CA, Modoc County, CA, Mono County, CA, Nevada County, CA, Placer 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), 46 km from the middle of the area, began a volume at 18:30 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, 6.5 hours before the alert went out and 137 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
- 3287 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 50 m²/s²
- 0-3 km storm-relative helicity
- 87 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
440 WWUS85 KREV 051832 RFWREV URGENT - FIRE WEATHER MESSAGE National Weather Service Reno NV 1132 AM PDT Sat Jun 5 2021 CAZ270>272-274-278-NVZ420-421-423-429-070600- /O.UPG.KREV.FW.A.0002.210606T1900Z-210607T0600Z/ /O.NEW.KREV.FW.W.0001.210606T1900Z-210607T0600Z/ /O.UPG.KREV.FW.A.0003.210607T1900Z-210608T0600Z/ /O.NEW.KREV.FW.W.0002.210607T1900Z-210608T0600Z/ Surprise Valley California- Western Lassen, Eastern Plumas, and Eastern Sierra Counties- Greater Lake Tahoe and Truckee Area-Southern Mono County- Eastern Lassen County- Northern Sierra Front including Carson City, Douglas, Storey, Southern Washoe, Western Lyon, and Far Southern Lassen Counties- Southern Sierra Front including Alpine, Northern Mono, Southern Lyon, and Western Mineral Counties- West Humboldt Basin in Pershing County- Lahontan Basin including Churchill and Eastern Mineral Counties- 1132 AM PDT Sat Jun 5 2021 ...RED FLAG WARNING IN EFFECT FROM NOON TO 11 PM PDT SUNDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR FOR THE EASTERN SIERRA...WESTERN NEVADA AND NORTHEASTERN CALIFORNIA... ...RED FLAG WARNING IN EFFECT FROM NOON TO 11 PM PDT MONDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR FOR THE EASTERN SIERRA...WESTERN NEVADA AND NORTHEASTERN CALIFORNIA... The National Weather Service in Reno has issued a Red Flag Warning for gusty winds and low humidity, which is in effect from noon to 11 PM PDT Sunday and from noon to 11 PM PDT Monday. The Fire Weather Watches are no longer in effect. * CHANGES...Upgraded Watches to Red Flag Warnings. * Affected Area...Fire Zone 270 Surprise Valley California, Fire Zone 271 Western Lassen, Eastern Plumas, and Eastern Sierra Counties, Fire Zone 272 Greater Lake Tahoe and Truckee Area, Fire Zone 274 Southern Mono County, Fire Zone 278 Eastern Lassen County, Fire Zone 420 Northern Sierra Front including Carson City, Douglas, Storey, Southern Washoe, Western Lyon, and Far Southern Lassen Counties, Fire Zone 421 Southern Sierra Front including Alpine, Northern Mono, Southern Lyon, and Western Mineral Counties, Fire Zone 423 West Humboldt Basin in Pershing County and Fire Zone 429 Lahontan Basin including Churchill and Eastern Mineral Counties. * Winds...West to Southwest 15 to 25 mph with gusts to 40 mph. Gusts up to 45 mph for wind prone areas. * Humidity...7 to 12 percent in western Nevada...10 to 20 percent in the Eastern Sierra, Tahoe Basin, and northeastern California. Poor to moderate recovery Saturday night. * Duration...4 to 8 hours each day. * Impacts...The combination of gusty winds and low humidity can cause fire to rapidly grow in size and intensity before first responders can contain them. * Additional Details...Dry and gusty winds are expected today as well, but the peak of the wind event is expected Sunday and Monday. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid outdoor activities that can cause a spark near dry vegetation, such as yard work, target shooting, or campfires. Follow local fire restrictions. Check weather.gov/reno for updates and livingwithfire.info for preparedness tips. && $$ http://weather.gov/reno
4 follow-up statements
774 WWUS85 KREV 062105 RFWREV URGENT - FIRE WEATHER MESSAGE National Weather Service Reno NV 205 PM PDT Sun Jun 6 2021 CAZ270>272-274-278-NVZ420-421-423-429-072115- /O.CON.KREV.FW.W.0001.000000T0000Z-210607T0600Z/ /O.CON.KREV.FW.W.0002.210607T1900Z-210608T0600Z/ Surprise Valley California- Western Lassen, Eastern Plumas, and Eastern Sierra Counties- Greater Lake Tahoe and Truckee Area-Southern Mono County- Eastern Lassen County- Northern Sierra Front including Carson City, Douglas, Storey, Southern Washoe, Western Lyon, and Far Southern Lassen Counties- Southern Sierra Front including Alpine, Northern Mono, Southern Lyon, and Western Mineral Counties- West Humboldt Basin in Pershing County- Lahontan Basin including Churchill and Eastern Mineral Counties- 205 PM PDT Sun Jun 6 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FOR THE EASTERN SIERRA...WESTERN NEVADA AND NORTHEASTERN CALIFORNIA... ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 11 PM PDT MONDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR FOR THE EASTERN SIERRA...WESTERN NEVADA AND NORTHEASTERN CALIFORNIA... * CHANGES...None. * Affected Area...Fire Zone 270 Surprise Valley California, Fire Zone 271 Western Lassen, Eastern Plumas, and Eastern Sierra Counties, Fire Zone 272 Greater Lake Tahoe and Truckee Area, Fire Zone 274 Southern Mono County, Fire Zone 278 Eastern Lassen County, Fire Zone 420 Northern Sierra Front including Carson City, Douglas, Storey, Southern Washoe, Western Lyon, and Far Southern Lassen Counties, Fire Zone 421 Southern Sierra Front including Alpine, Northern Mono, Southern Lyon, and Western Mineral Counties, Fire Zone 423 West Humboldt Basin in Pershing County and Fire Zone 429 Lahontan Basin including Churchill and Eastern Mineral Counties. * Winds...West to Southwest 15 to 25 mph with gusts to 40 mph. Gusts up to 45 mph for wind prone areas. * Humidity...7 to 12 percent in western Nevada...10 to 20 percent in the Eastern Sierra, Tahoe Basin, and northeastern California. Poor to moderate recovery Saturday night. * Duration...4 to 8 hours each day. * Impacts...The combination of gusty winds and low humidity can cause fire to rapidly grow in size and intensity before first responders can contain them. * Additional Details...Dry and gusty winds are expected into the evening, but the peak of the wind event is still expected tomorrow. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid outdoor activities that can cause a spark near dry vegetation, such as yard work, target shooting, or campfires. Follow local fire restrictions. Check weather.gov/reno for updates and livingwithfire.info for preparedness tips. && $$ http://weather.gov/reno
191 WWUS85 KREV 062204 CCA RFWREV URGENT - FIRE WEATHER MESSAGE...CORRECTED National Weather Service Reno NV 304 PM PDT Sun Jun 6 2021 CAZ270>272-274-278-NVZ420-421-423-429-072115- /O.COR.KREV.FW.W.0001.000000T0000Z-210607T0600Z/ /O.COR.KREV.FW.W.0002.210607T1900Z-210608T0600Z/ Surprise Valley California- Western Lassen, Eastern Plumas, and Eastern Sierra Counties- Greater Lake Tahoe and Truckee Area-Southern Mono County- Eastern Lassen County- Northern Sierra Front including Carson City, Douglas, Storey, Southern Washoe, Western Lyon, and Far Southern Lassen Counties- Southern Sierra Front including Alpine, Northern Mono, Southern Lyon, and Western Mineral Counties- West Humboldt Basin in Pershing County- Lahontan Basin including Churchill and Eastern Mineral Counties- 304 PM PDT Sun Jun 6 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FOR THE EASTERN SIERRA...WESTERN NEVADA AND NORTHEASTERN CALIFORNIA... ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 11 PM PDT MONDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR FOR THE EASTERN SIERRA...WESTERN NEVADA AND NORTHEASTERN CALIFORNIA... * CHANGES...None. * Affected Area...Fire Zone 270 Surprise Valley California, Fire Zone 271 Western Lassen, Eastern Plumas, and Eastern Sierra Counties, Fire Zone 272 Greater Lake Tahoe and Truckee Area, Fire Zone 274 Southern Mono County, Fire Zone 278 Eastern Lassen County, Fire Zone 420 Northern Sierra Front including Carson City, Douglas, Storey, Southern Washoe, Western Lyon, and Far Southern Lassen Counties, Fire Zone 421 Southern Sierra Front including Alpine, Northern Mono, Southern Lyon, and Western Mineral Counties, Fire Zone 423 West Humboldt Basin in Pershing County and Fire Zone 429 Lahontan Basin including Churchill and Eastern Mineral Counties. * Winds...West to Southwest 15 to 25 mph with gusts to 40 mph. Gusts up to 45 mph for wind prone areas. * Humidity...7 to 12 percent in western Nevada...10 to 20 percent in the Eastern Sierra, Tahoe Basin, and northeastern California. Poor to moderate recovery Saturday night. * Duration...4 to 8 hours each day. * Impacts...The combination of gusty winds and low humidity can cause fire to rapidly grow in size and intensity before first responders can contain them. * Additional Details...Dry and gusty winds are expected into the evening, but the peak of the wind event is still expected tomorrow. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid outdoor activities that can cause a spark near dry vegetation, such as yard work, target shooting, or campfires. Follow local fire restrictions. Check weather.gov/reno for updates and livingwithfire.info for preparedness tips. && $$ http://weather.gov/reno
155 WWUS85 KREV 070554 RFWREV URGENT - FIRE WEATHER MESSAGE National Weather Service Reno NV 1054 PM PDT Sun Jun 6 2021 CAZ270>272-274-278-NVZ420-421-423-429-080600- /O.EXP.KREV.FW.W.0001.000000T0000Z-210607T0600Z/ /O.CON.KREV.FW.W.0002.210607T1900Z-210608T0600Z/ Surprise Valley California- Western Lassen, Eastern Plumas, and Eastern Sierra Counties- Greater Lake Tahoe and Truckee Area-Southern Mono County- Eastern Lassen County- Northern Sierra Front including Carson City, Douglas, Storey, Southern Washoe, Western Lyon, and Far Southern Lassen Counties- Southern Sierra Front including Alpine, Northern Mono, Southern Lyon, and Western Mineral Counties- West Humboldt Basin in Pershing County- Lahontan Basin including Churchill and Eastern Mineral Counties- 1054 PM PDT Sun Jun 6 2021 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 11 PM PDT MONDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR FOR THE EASTERN SIERRA...WESTERN NEVADA AND NORTHEASTERN CALIFORNIA... * CHANGES...None. * Affected Area...Fire Zone 270 Surprise Valley California, Fire Zone 271 Western Lassen, Eastern Plumas, and Eastern Sierra Counties, Fire Zone 272 Greater Lake Tahoe and Truckee Area, Fire Zone 274 Southern Mono County, Fire Zone 278 Eastern Lassen County, Fire Zone 420 Northern Sierra Front including Carson City, Douglas, Storey, Southern Washoe, Western Lyon, and Far Southern Lassen Counties, Fire Zone 421 Southern Sierra Front including Alpine, Northern Mono, Southern Lyon, and Western Mineral Counties, Fire Zone 423 West Humboldt Basin in Pershing County and Fire Zone 429 Lahontan Basin including Churchill and Eastern Mineral Counties. * Winds...West to Southwest 15 to 25 mph with gusts to 40 mph. Gusts up to 45 mph for wind prone areas. * Humidity...7 to 12 percent in western Nevada...10 to 20 percent in the Eastern Sierra, Tahoe Basin, and northeastern California. Limited overnight humidity recovery. * Duration...4 to 8 hours. * Impacts...The combination of gusty winds and low humidity can cause fires to rapidly grow in size and intensity before first responders can contain them. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid outdoor activities that can cause a spark near dry vegetation, such as yard work, target shooting, or campfires. Follow local fire restrictions. Check weather.gov/reno for updates and livingwithfire.info for preparedness tips. && $$ http://weather.gov/reno
871 WWUS85 KREV 072012 RFWREV URGENT - FIRE WEATHER MESSAGE National Weather Service Reno NV 112 PM PDT Mon Jun 7 2021 CAZ274-NVZ421-429-082000- /O.NEW.KREV.FW.W.0003.210608T1900Z-210609T0600Z/ /O.NEW.KREV.FW.W.0004.210609T1900Z-210610T0600Z/ /O.CON.KREV.FW.W.0002.000000T0000Z-210608T0600Z/ Southern Mono County- Southern Sierra Front including Alpine, Northern Mono, Southern Lyon, and Western Mineral Counties- Lahontan Basin including Churchill and Eastern Mineral Counties- 112 PM PDT Mon Jun 7 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR THE EASTERN SIERRA AND MUCH OF WESTERN NEVADA... ...RED FLAG WARNING ALSO IN EFFECT FROM NOON TO 11 PM PDT TUESDAY AND WEDNESDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR THE EASTERN SIERRA AND PORTIONS OF WESTERN NEVADA... The National Weather Service in Reno has issued a Red Flag Warning for gusty winds and low humidity, which is in effect from noon to 11 PM PDT Tuesday. A Red Flag Warning has also been issued from noon to 11 PM PDT Wednesday. * CHANGES...Extended Red Flag Warnings into Tuesday and Wednesday. * Affected Area...Fire Zone 274 Southern Mono County, Fire Zone 421 Southern Sierra Front including Alpine, Northern Mono, Southern Lyon, and Western Mineral Counties and Fire Zone 429 Lahontan Basin including Churchill and Eastern Mineral Counties. * Winds...Each afternoon and evening: West to Southwest 15 to 25 mph with gusts 30 to 40 mph. Gusts up to 45 mph for wind prone areas. Winds will be more southerly on Wednesday. * Humidity...8 to 15 percent in western Nevada...10 to 20 percent in the Eastern Sierra. * Duration...4 to 8 hours each day. * Impacts...The combination of gusty winds and low humidity can cause fires to rapidly grow in size and intensity before first responders can contain them. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid outdoor activities that can cause a spark near dry vegetation, such as yard work, target shooting, or campfires. Follow local fire restrictions. Check weather.gov/reno for updates and livingwithfire.info for preparedness tips. && $$ NVZ423-082000- /O.NEW.KREV.FW.W.0003.210608T1900Z-210609T0600Z/ /O.CON.KREV.FW.W.0002.000000T0000Z-210608T0600Z/ West Humboldt Basin in Pershing County- 112 PM PDT Mon Jun 7 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR MUCH OF WESTERN NEVADA... ...RED FLAG WARNING IN EFFECT FROM NOON TO 11 PM PDT TUESDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR PORTIONS OF WESTERN NEVADA... The National Weather Service in Reno has issued a Red Flag Warning for gusty winds and low humidity, which is in effect from noon to 11 PM PDT Tuesday. * CHANGES...Extended Red Flag Warning into Tuesday. * Affected Area...Fire Zone 423 West Humboldt Basin in Pershing County. * Winds...West to Southwest 15 to 25 mph with gusts 30 to 40 mph. Gusts up to 45 mph for wind prone areas. * Humidity...7 to 15 percent. * Duration...3 to 6 hours. * Impacts...The combination of gusty winds and low humidity can cause fires to rapidly grow in size and intensity before first responders can contain them. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid outdoor activities that can cause a spark near dry vegetation, such as yard work, target shooting, or campfires. Follow local fire restrictions. Check weather.gov/reno for updates and livingwithfire.info for preparedness tips. && $$ CAZ270>272-278-NVZ420-080600- /O.CON.KREV.FW.W.0002.000000T0000Z-210608T0600Z/ Surprise Valley California- Western Lassen, Eastern Plumas, and Eastern Sierra Counties- Greater Lake Tahoe and Truckee Area-Eastern Lassen County- Northern Sierra Front including Carson City, Douglas, Storey, Southern Washoe, Western Lyon, and Far Southern Lassen Counties- 112 PM PDT Mon Jun 7 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR THE SIERRA FRONT, TAHOE BASIN, AND NORTHEAST CALIFORNIA... * CHANGES...None. * Affected Area...Fire Zone 270 Surprise Valley California, Fire Zone 271 Western Lassen, Eastern Plumas, and Eastern Sierra Counties, Fire Zone 272 Greater Lake Tahoe and Truckee Area, Fire Zone 278 Eastern Lassen County, Fire Zone 420 Northern Sierra Front including Carson City, Douglas, Storey, Southern Washoe, Western Lyon and Far Southern Lassen Counties. * Winds...West to Southwest 15 to 25 mph with gusts 30 to 40 mph. Gusts up to 45 mph for wind prone areas. * Humidity...7 to 12 percent in western Nevada...15 to 25 percent in the Tahoe Basin and northeastern California. * Duration...3 to 6 hours. * Impacts...The combination of gusty winds and low humidity can cause fires to rapidly grow in size and intensity before first responders can contain them. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid outdoor activities that can cause a spark near dry vegetation, such as yard work, target shooting, or campfires. Follow local fire restrictions. Check weather.gov/reno for updates and livingwithfire.info for preparedness tips. && $$ http://weather.gov/reno
The office that day
Everything else NWS Reno, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 5, 11:32 AM PDT | Red Flag Warning | REV | Churchill, Douglas, Lyon, Mineral, Pershing, Storey and 1 more | 35 hr |
| Jun 5, 2:09 PM PDT | Lake Wind Advisory | REV | Churchill, Douglas, Lyon, Mineral, Pershing, Storey and 1 more | 31 hr |
Nearby
Red Flag Warnings in California, 2021Red Flag Warnings in Nevada, 2021Every red flag 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.