Alert archive / Nevada / Red Flag Warnings in 2021
Red Flag Warning 6, NWS Reno, NV
NWS Reno, NV issued this red flag warning at Jun 21, 2021, 5:40 AM PDT for 7 counties in Nevada; 4 counties in California. It took effect at Jun 21, 2021, 2:00 PM PDT. It was in force for 15 hr. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jun 21, 2021, 5:40 AM PDT (12:40 UTC)
- In effect from
- Jun 21, 2021, 2:00 PM PDT
- Expired
- Jun 22, 2021, 5:00 AM PDT
- In force
- 15 hr
- 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 12:41 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 21, 8:30 PM PDT | TSTM WND GST 79 | 21 Wnw Imlay, NV | MESONET STATION MJBN2 MAJUBA STATION ELEVATION: 5292 FT. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Reno, NV (KREV), launched 12:00Z, 0.7 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
- 3823 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- -36 m²/s²
- 0-3 km storm-relative helicity
- 178 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
291 WWUS85 KREV 211240 RFWREV URGENT - FIRE WEATHER MESSAGE National Weather Service Reno NV 540 AM PDT Mon Jun 21 2021 CAZ278-NVZ458-221245- /O.NEW.KREV.FW.W.0006.210621T2100Z-210622T0300Z/ /O.CON.KREV.FW.A.0005.210622T0300Z-210622T1500Z/ Eastern Lassen County-Northern Washoe County- 540 AM PDT Mon Jun 21 2021 ...RED FLAG WARNING IN EFFECT FROM 2 PM THIS AFTERNOON TO 8 PM PDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR PORTIONS OF NORTHEASTERN CALIFORNIA AND FAR NORTHWESTERN NEVADA... ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH TUESDAY MORNING FOR THUNDERSTORMS AND DRY LIGHTNING FOR PORTIONS OF NORTHEASTERN CALIFORNIA AND FAR NORTHWESTERN NEVADA... The National Weather Service in Reno has issued a Red Flag Warning for gusty winds and low humidity, which is in effect from 2 PM this afternoon to 8 PM PDT this evening. * Changes...Red Flag Warning issued for today for winds and low humidity. * Affected Area...Fire Zone 278 Eastern Lassen County and Fire Zone 458 Northern Washoe County. * Winds...Southwest to west 15-25 mph with gusts to 35 mph, locally higher in wind prone locations. * Humidity...8-14% with only poor to moderate humidity recoveries tonight. * Duration...3 to 6 hours. * 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. * Thunderstorms...Isolated to scattered thunderstorms will be possible this evening through early Tuesday morning. Any storms that form will be moving at greater than 20 mph, increasing the potential for dry lightning strikes. * Impacts...Lightning with little to no rainfall can create new fire starts and may combine with outflow winds to cause a fire to rapidly grow in size and intensity before first responders can contain them. Fires may go undetected through the overnight hours. 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. && $$ NVZ420-423-429-220600- /O.NEW.KREV.FW.W.0006.210621T2100Z-210622T0600Z/ Northern Sierra Front including Carson City, Douglas, Storey, Southern Washoe, Western Lyon, and Far Southern Lassen Counties- West Humboldt Basin in Pershing County- Lahontan Basin including Churchill and Eastern Mineral Counties- 540 AM PDT Mon Jun 21 2021 ...RED FLAG WARNING IN EFFECT FROM 2 PM THIS AFTERNOON TO 11 PM PDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR A LARGE PORTION OF WESTERN NEVADA... The National Weather Service in Reno has issued a Red Flag Warning for gusty winds and low humidity, which is in effect from 2 PM this afternoon to 11 PM PDT this evening. * Affected Area...Fire Zone 420 Northern Sierra Front including Carson City, Douglas, Storey, Southern Washoe, Western Lyon, and Far Southern Lassen Counties, Fire Zone 423 West Humboldt Basin in Pershing County and Fire Zone 429 Lahontan Basin including Churchill and Eastern Mineral Counties. * Winds...Southwest to west 20 to 25 mph with gusts to 35 mph, locally higher in wind prone locations. * Humidity...7-14%. * Duration...3 to 6 hours. * Impacts...The combination of gusty winds and low humidity can cause fire to rapidly grow in size and intensity before first responders can contain them. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid outdoor activities that can cause a spark near dry vegetation, such as yard work, target shooting, or campfires. Follow local fire restrictions. Check weather.gov/reno for updates and livingwithfire.info for preparedness tips. && $$ CAZ270-271-221245- /O.CON.KREV.FW.A.0005.210622T0300Z-210622T1500Z/ Surprise Valley California- Western Lassen, Eastern Plumas, and Eastern Sierra Counties- 540 AM PDT Mon Jun 21 2021 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH TUESDAY MORNING FOR THUNDERSTORMS AND DRY LIGHTNING FOR THE LASSEN NATIONAL FOREST AND THE SURPRISE VALLEY... * Changes...None. * Affected Area...Fire Zone 270 Surprise Valley California, Fire Zone 271 Western Lassen, Eastern Plumas and Eastern Sierra Counties. * Thunderstorms...Isolated to scattered thunderstorms will be possible this evening through early Tuesday morning. Any storms that form will be moving at greater than 20 mph increasing the potential for dry lightning strikes. * Impacts...Lightning with little to no rainfall can create new fire starts and may combine with outflow winds to cause a fire to rapidly grow in size and intensity before first responders can contain them. Fires may go undetected through the overnight hours. 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 and report any smoke. Check weather.gov/reno for updates and livingwithfire.info for preparedness tips. && $$ http://weather.gov/reno
4 follow-up statements
424 WWUS85 KREV 211934 RFWREV URGENT - FIRE WEATHER MESSAGE National Weather Service Reno NV 1234 PM PDT Mon Jun 21 2021 CAZ278-NVZ458-221200- /O.CAN.KREV.FW.A.0005.210622T0300Z-210622T1500Z/ /O.EXT.KREV.FW.W.0006.210621T2100Z-210622T1200Z/ Eastern Lassen County-Northern Washoe County- 1234 PM PDT Mon Jun 21 2021 ...RED FLAG WARNING NOW IN EFFECT UNTIL 10 PM PDT TUESDAY FOR GUSTY WINDS AND LOW HUMIDITY ACROSS NORTHEAST CALIFORNIA AND NORTHWEST NEVADA... ...RED FLAG WARNING IN EFFECT FROM 8 PM THIS EVENING TO 5 AM PDT TUESDAY FOR LIGHTNING POTENTIAL ACROSS NORTHEAST CALIFORNIA AND NORTHWEST NEVADA... * Changes...Red Flag Warning extended through Tonight for Thunderstorms and Lightning potential. * Affected Area...Fire Zone 278 Eastern Lassen County and Fire Zone 458 Northern Washoe County. * Thunderstorms...Thunderstorms are possible later this evening through early Tuesday morning. Any storms that form will be moving at greater than 20 mph, increasing the potential for dry lightning strikes and new fire starts. * Winds...Southwest to west 10-20 mph with gusts to 35 mph will diminish this evening. Gusty and erratic winds may accompany thunderstorms late tonight. * Humidity...Minimums 8-14% this afternoon with poor to moderate humidity recoveries tonight. * Impacts...The combination of gusty winds and low humidity can cause fire to rapidly grow in size and intensity. Lightning with little to no rainfall can create new fire starts and may combine with outflow winds. Fires may go undetected through the overnight hours. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid outdoor activities that can cause a spark near dry vegetation, such as yard work, target shooting, or campfires. Follow local fire restrictions. Check weather.gov/reno for updates and livingwithfire.info for preparedness tips. && $$ CAZ270-271-221500- /O.UPG.KREV.FW.A.0005.210622T0300Z-210622T1500Z/ /O.EXB.KREV.FW.W.0006.210622T0300Z-210622T1200Z/ Surprise Valley California- Western Lassen, Eastern Plumas, and Eastern Sierra Counties- 1234 PM PDT Mon Jun 21 2021 ...RED FLAG WARNING IN EFFECT FROM 8 PM THIS EVENING TO 5 AM PDT TUESDAY FOR LIGHTNING POTENTIAL ACROSS NORTHEAST CALIFORNIA AND NORTHWEST NEVADA... * Changes...Red Flag Warning issued for Thunderstorms and Lightning potential tonight. * Affected Area...Fire Zone 270 Surprise Valley California, Fire Zone 271 Western Lassen, Eastern Plumas and Eastern Sierra Counties. * Thunderstorms...Thunderstorms are possible later this evening through early Tuesday morning. Any storms that form will be moving at greater than 20 mph, increasing the potential for dry lightning strikes and new fire starts. * Impacts...Lightning with little to no rainfall can create new fire starts and may combine with outflow winds. Fires may go undetected through the overnight hours. 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. && $$ NVZ420-423-429-220600- /O.CON.KREV.FW.W.0006.210621T2100Z-210622T0600Z/ Northern Sierra Front including Carson City, Douglas, Storey, Southern Washoe, Western Lyon, and Far Southern Lassen Counties- West Humboldt Basin in Pershing County- Lahontan Basin including Churchill and Eastern Mineral Counties- 1234 PM PDT Mon Jun 21 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY ACROSS WESTERN NEVADA... * Changes...None. * Affected Area...Fire Zone 420 Northern Sierra Front including Carson City, Douglas, Storey, Southern Washoe, Western Lyon, and Far Southern Lassen Counties, Fire Zone 423 West Humboldt Basin in Pershing County and Fire Zone 429 Lahontan Basin including Churchill and Eastern Mineral Counties. * Winds...Southwest to west 15 to 25 mph with gusts to 35 mph, locally higher in wind prone locations. * Humidity...7-14%. * Duration...3 to 6 hours. * Impacts...The combination of gusty winds and low humidity can cause fire to rapidly grow in size and intensity before first responders can contain them. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid outdoor activities that can cause a spark near dry vegetation, such as yard work, target shooting, or campfires. Follow local fire restrictions. Check weather.gov/reno for updates and livingwithfire.info for preparedness tips. && $$ http://weather.gov/reno
979 WWUS85 KREV 212115 CCA RFWREV URGENT - FIRE WEATHER MESSAGE...CORRECTED National Weather Service Reno NV 215 PM PDT Mon Jun 21 2021 CAZ278-NVZ458-221200- /O.CAN.KREV.FW.A.0005.210622T0300Z-210622T1500Z/ /O.COR.KREV.FW.W.0006.210621T2100Z-210622T1200Z/ Eastern Lassen County-Northern Washoe County- 215 PM PDT Mon Jun 21 2021 ...RED FLAG WARNING NOW IN EFFECT UNTIL 10 PM PDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY ACROSS NORTHEAST CALIFORNIA AND NORTHWEST NEVADA... ...RED FLAG WARNING IN EFFECT FROM 8 PM THIS EVENING TO 5 AM PDT TUESDAY FOR LIGHTNING POTENTIAL ACROSS NORTHEAST CALIFORNIA AND NORTHWEST NEVADA... * Changes...Red Flag Warning extended through Tonight for Thunderstorms and Lightning potential. * Affected Area...Fire Zone 278 Eastern Lassen County and Fire Zone 458 Northern Washoe County. * Thunderstorms...Thunderstorms are possible later this evening through early Tuesday morning. Any storms that form will be moving at greater than 20 mph, increasing the potential for dry lightning strikes and new fire starts. * Winds...Southwest to west 10-20 mph with gusts to 35 mph will diminish this evening. Gusty and erratic winds may accompany thunderstorms late tonight. * Humidity...Minimums 8-14% this afternoon with poor to moderate humidity recoveries tonight. * Impacts...The combination of gusty winds and low humidity can cause fire to rapidly grow in size and intensity. Lightning with little to no rainfall can create new fire starts and may combine with outflow winds. Fires may go undetected through the overnight hours. 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. && $$ CAZ270-271-221500- /O.UPG.KREV.FW.A.0005.210622T0300Z-210622T1500Z/ /O.EXB.KREV.FW.W.0006.210622T0300Z-210622T1200Z/ Surprise Valley California- Western Lassen, Eastern Plumas, and Eastern Sierra Counties- 215 PM PDT Mon Jun 21 2021 ...RED FLAG WARNING IN EFFECT FROM 8 PM THIS EVENING TO 5 AM PDT TUESDAY FOR LIGHTNING POTENTIAL ACROSS NORTHEAST CALIFORNIA AND NORTHWEST NEVADA... * Changes...Red Flag Warning issued for Thunderstorms and Lightning potential tonight. * Affected Area...Fire Zone 270 Surprise Valley California, Fire Zone 271 Western Lassen, Eastern Plumas and Eastern Sierra Counties. * Thunderstorms...Thunderstorms are possible later this evening through early Tuesday morning. Any storms that form will be moving at greater than 20 mph, increasing the potential for dry lightning strikes and new fire starts. * Impacts...Lightning with little to no rainfall can create new fire starts and may combine with outflow winds. Fires may go undetected through the overnight hours. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid outdoor activities that can cause a spark near dry vegetation, such as yard work, target shooting, or campfires. Follow local fire restrictions. Check weather.gov/reno for updates and livingwithfire.info for preparedness tips. && $$ NVZ420-423-429-220600- /O.CON.KREV.FW.W.0006.000000T0000Z-210622T0600Z/ Northern Sierra Front including Carson City, Douglas, Storey, Southern Washoe, Western Lyon, and Far Southern Lassen Counties- West Humboldt Basin in Pershing County- Lahontan Basin including Churchill and Eastern Mineral Counties- 215 PM PDT Mon Jun 21 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY ACROSS WESTERN NEVADA... * Changes...None. * Affected Area...Fire Zone 420 Northern Sierra Front including Carson City, Douglas, Storey, Southern Washoe, Western Lyon, and Far Southern Lassen Counties, Fire Zone 423 West Humboldt Basin in Pershing County and Fire Zone 429 Lahontan Basin including Churchill and Eastern Mineral Counties. * Winds...Southwest to west 15 to 25 mph with gusts to 35 mph, locally higher in wind prone locations. * Humidity...7-14%. * Duration...3 to 6 hours. * 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. 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. && $$ http://weather.gov/reno
345 WWUS85 KREV 221018 RFWREV URGENT - FIRE WEATHER MESSAGE National Weather Service Reno NV 318 AM PDT Tue Jun 22 2021 CAZ274-NVZ421-230400- /O.NEW.KREV.FW.W.0007.210622T2000Z-210623T0400Z/ Southern Mono County- Southern Sierra Front including Alpine, Northern Mono, Southern Lyon, and Western Mineral Counties- 318 AM PDT Tue Jun 22 2021 ...RED FLAG WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO 9 PM PDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR THE EASTERN SIERRA... The National Weather Service in Reno has issued a Red Flag Warning for gusty winds and low humidity, which is in effect from 1 PM this afternoon to 9 PM PDT this evening. * Affected Area...Fire Zone 274 Southern Mono County, Fire Zone 421 Southern Sierra Front including Alpine, Northern Mono, Southern Lyon and Western Mineral Counties. * Winds...Southwest 15 to 25 mph with gusts to 35 mph. Locally stronger winds expected for wind prone locations. * Humidity...5-15% this afternoon. * Duration...3 to 7 hours. * Impacts...The combination of gusty winds and low humidity can cause fire to rapidly grow in size and intensity before first responders can contain them. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid outdoor activities that can cause a spark near dry vegetation, such as yard work, target shooting, or campfires. Follow local fire restrictions. Check weather.gov/reno for updates and livingwithfire.info for preparedness tips. && $$ CAZ270-271-278-NVZ458-221200- /O.CON.KREV.FW.W.0006.000000T0000Z-210622T1200Z/ Surprise Valley California- Western Lassen, Eastern Plumas, and Eastern Sierra Counties- Eastern Lassen County-Northern Washoe County- 318 AM PDT Tue Jun 22 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 AM PDT EARLY THIS MORNING FOR THUNDERSTORMS AND DRY LIGHTNING POTENTIAL ACROSS NORTHEAST CALIFORNIA AND NORTHWEST NEVADA... * Changes...None. * Affected Area...Fire Zone 270 Surprise Valley California, Fire Zone 271 Western Lassen, Eastern Plumas, and Eastern Sierra Counties, Fire Zone 278 Eastern Lassen County and Fire Zone 458 Northern Washoe County. * Thunderstorms...Thunderstorms have formed overnight and will continue through around sunrise. Any storms that form will be moving at greater than 20 mph, increasing the potential for dry lightning strikes and new fire starts. * Impacts...Lightning with little to no rainfall can create new fire starts and may combine with outflow winds. Fires may go undetected through the overnight hours. 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. && $$ http://weather.gov/reno
939 WWUS85 KREV 221151 RFWREV URGENT - FIRE WEATHER MESSAGE National Weather Service Reno NV 451 AM PDT Tue Jun 22 2021 CAZ270-271-278-NVZ458-221300- /O.EXP.KREV.FW.W.0006.000000T0000Z-210622T1200Z/ Surprise Valley California- Western Lassen, Eastern Plumas, and Eastern Sierra Counties- Eastern Lassen County-Northern Washoe County- 451 AM PDT Tue Jun 22 2021 ...RED FLAG WARNING WILL EXPIRE AT 5 AM PDT EARLY THIS MORNING FOR THUNDERSTORMS AND DRY LIGHTNING POTENTIAL ACROSS NORTHEAST CALIFORNIA AND NORTHWEST NEVADA... Storms are winding down this morning. Additional thunderstorms are possible near the Oregon border this afternoon. These storms are likely to be a hybrid of wet and dry, with new fire starts possible. $$ CAZ274-NVZ421-230400- /O.CON.KREV.FW.W.0007.210622T2000Z-210623T0400Z/ Southern Mono County- Southern Sierra Front including Alpine, Northern Mono, Southern Lyon, and Western Mineral Counties- 451 AM PDT Tue Jun 22 2021 ...RED FLAG WARNING REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO 9 PM PDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR THE EASTERN SIERRA... * Changes...None. * Affected Area...Fire Zone 274 Southern Mono County, Fire Zone 421 Southern Sierra Front including Alpine, Northern Mono, Southern Lyon and Western Mineral Counties. * Winds...Southwest 15 to 25 mph with gusts to 35 mph. Locally stronger winds expected for wind prone locations. * Humidity...5-15% this afternoon. * Duration...3 to 7 hours. * 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. 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 20, 8:47 PM PDT | Fire Weather Watch | REV | Washoe | 16 hr |
| Jun 21, 3:31 AM PDT | Lake Wind Advisory | REV | Churchill, Douglas, Lyon, Mineral, Pershing, Storey and 1 more | 18 hr |
Nearby
Red Flag Warnings in Nevada, 2021Red Flag Warnings in California, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.