Alert archive / Nevada / Red Flag Warnings in 2021
Red Flag Warning 9, NWS Reno, NV
NWS Reno, NV issued this red flag warning at Jun 27, 2021, 11:21 AM PDT for 6 counties in Nevada; 6 counties in California. It took effect at Jun 29, 2021, 2:00 PM PDT. It was in force for 9 hr. 3 reports 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 27, 2021, 11:21 AM PDT (18:21 UTC)
- In effect from
- Jun 29, 2021, 2:00 PM PDT
- Expired
- Jun 29, 2021, 11:00 PM PDT
- In force
- 9 hr
- Issued by
- NWS Reno, NV
Counties El Dorado County, CA, Madera County, CA, Mono County, CA, Nevada County, CA, Placer County, CA, Sierra County, CA, Churchill County, NV, Douglas County, NV, Lyon County, NV, Mineral County, NV, Storey County, NV, Washoe County, NV
The radar
The Reno radar (KRGX), 85 km from the middle of the area, began a volume at 18:22 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 29, 3:00 PM PDT | DEBRIS FLOW | 4 Nw June Lake, CA | MUD, DIRT, AND ROCKS ACROSS HIGHWAY 158 NEAR GRANT LAKE, CA. |
| Jun 29, 4:05 PM PDT | HEAVY RAIN 0.2 | 1 Wnw Floriston, CA | BIG RIG HYDROPLANED AND HIT THE CENTER DIVIDER ON INTERSTATE 80 NORTH OF FLORISTON. BOTH LANES ARE BLOCKED BY THE BIG RIG AT THIS TIME. |
| Jun 29, 4:06 PM PDT | HEAVY RAIN 0.25 | 7 Ene Leavitt Meadows, CA | VEHICLE OFF EMBANKMENT OFF HIGHWAY 395 DUE TO HYDROPLANING. |
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, 6.4 hours before the alert went out and 141 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
- 2956 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 61 m²/s²
- 0-3 km storm-relative helicity
- 63 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
067 WWUS85 KREV 271821 RFWREV URGENT - FIRE WEATHER MESSAGE National Weather Service Reno NV 1121 AM PDT Sun Jun 27 2021 CAZ274-NVZ421-290000- /O.UPG.KREV.FW.A.0006.210628T2100Z-210629T0300Z/ /O.NEW.KREV.FW.W.0008.210628T2100Z-210629T0300Z/ /O.UPG.KREV.FW.A.0007.210629T2100Z-210630T0300Z/ /O.NEW.KREV.FW.W.0009.210629T2100Z-210630T0300Z/ Southern Mono County- Southern Sierra Front including Alpine, Northern Mono, Southern Lyon, and Western Mineral Counties- 1121 AM PDT Sun Jun 27 2021 ...RED FLAG WARNING IN EFFECT FROM 2 PM TO 8 PM PDT MONDAY AND TUESDAY FOR THUNDERSTORMS AND STRONG OUTFLOW WINDS DURING A HEAT WAVE FOR THE EASTERN SIERRA AND SOUTHERN SIERRA FRONT... The National Weather Service in Reno has issued a Red Flag Warning for thunderstorms and strong outflow winds, which is in effect from 2 PM to 8 PM PDT Monday. A Red Flag Warning has also been issued from 2 PM to 8 PM PDT Tuesday. The Fire Weather Watch is no longer in effect. The Fire Weather Watch is no longer in effect. * CHANGES...Upgrade to Red Flag Warning. * Affected Area...Fire Zone 274 Southern Mono County, Fire Zone 421 Southern Sierra Front including Alpine, Northern Mono, Southern Lyon and Western Mineral Counties. * Thunderstorms are forecast to develop during the late afternoon and evening hours on Monday and Tuesday. Despite some rainfall with the thunderstorms lightning ignitions are possible, especially with the abnormally dry timber. * Outflow winds may exceed 50 mph. * Impacts...Lightning can create new fire starts and may combine with strong outflow winds to cause a 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. && $$ NVZ420-429-290000- /O.NEW.KREV.FW.A.0008.210629T2100Z-210630T0900Z/ Northern Sierra Front including Carson City, Douglas, Storey, Southern Washoe, Western Lyon, and Far Southern Lassen Counties- Lahontan Basin including Churchill and Eastern Mineral Counties- 1121 AM PDT Sun Jun 27 2021 ...FIRE WEATHER WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH LATE TUESDAY NIGHT FOR THUNDERSTORMS AND STRONG OUTFLOW WINDS DURING A HEAT WAVE FOR WESTERN NEVADA... The National Weather Service in Reno has issued a Fire Weather Watch for thunderstorms and strong outflow winds, which is in effect from Tuesday afternoon through late Tuesday night. * Affected Area...Fire Zone 420 Northern Sierra Front including Carson City, Douglas, Storey, Southern Washoe, Western Lyon, and Far Southern Lassen Counties and Fire Zone 429 Lahontan Basin including Churchill and Eastern Mineral Counties. * Thunderstorms are forecast to develop during the late afternoon on Tuesday. Some storms may persist over the area into Tuesday night. Minimal rainfall is likely to occur allowing for a higher risk of dry lightning strikes. * Outflow winds may exceed 50 mph. * Impacts...Lightning can create new fire starts and may combine with strong outflow winds to cause a fire to rapidly grow in size and intensity before first responders can contain them. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid outdoor activities that can cause a spark near dry vegetation, such as yard work, target shooting, or campfires. Follow local fire restrictions. Check weather.gov/reno for updates and livingwithfire.info for preparedness tips. && $$ CAZ271-272-278-290000- /O.NEW.KREV.FW.A.0008.210629T2100Z-210630T0300Z/ Western Lassen, Eastern Plumas, and Eastern Sierra Counties- Greater Lake Tahoe and Truckee Area-Eastern Lassen County- 1121 AM PDT Sun Jun 27 2021 ...FIRE WEATHER WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH TUESDAY EVENING FOR THUNDERSTORMS AND STRONG OUTFLOW WINDS DURING A HEAT WAVE FOR THE TAHOE BASIN AND NORTHEAST CALIFORNIA... The National Weather Service in Reno has issued a Fire Weather Watch for thunderstorms and strong outflow winds, which is in effect from Tuesday afternoon through Tuesday evening. * Affected Area...Fire Zone 271 Western Lassen, Eastern Plumas, and Eastern Sierra Counties, Fire Zone 272 Greater Lake Tahoe and Truckee Area and Fire Zone 278 Eastern Lassen County. * Thunderstorms are forecast to develop during the late afternoon and evening hours on Tuesday. Despite some rainfall with the thunderstorms lightning ignitions are possible, especially with the abnormally dry timber. * Outflow winds may exceed 50 mph. * Impacts...Lightning can create new fire starts and may combine with strong outflow winds to cause a 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. && $$ http://weather.gov/reno
2 follow-up statements
945 WWUS85 KREV 281955 RFWREV URGENT - FIRE WEATHER MESSAGE National Weather Service Reno NV 1255 PM PDT Mon Jun 28 2021 CAZ274-NVZ421-300000- /O.CON.KREV.FW.W.0008.210628T2100Z-210629T0300Z/ /O.CON.KREV.FW.W.0009.210629T2100Z-210630T0300Z/ Southern Mono County- Southern Sierra Front including Alpine, Northern Mono, Southern Lyon, and Western Mineral Counties- 1255 PM PDT Mon Jun 28 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING FOR THUNDERSTORMS AND STRONG OUTFLOW WINDS DURING A HEAT WAVE FOR THE EASTERN SIERRA AND SOUTHERN SIERRA FRONT... ...RED FLAG WARNING REMAINS IN EFFECT FROM 2 PM TO 8 PM PDT TUESDAY FOR THUNDERSTORMS AND STRONG OUTFLOW WINDS DURING A HEAT WAVE FOR THE EASTERN SIERRA AND SOUTHERN SIERRA FRONT... * CHANGES...None. * Affected Area...Fire Zone 274 Southern Mono County, Fire Zone 421 Southern Sierra Front including Alpine, Northern Mono, Southern Lyon and Western Mineral Counties. * Thunderstorms are forecast to develop during the late afternoon and evening hours Today and and Tuesday. Despite some heavy rainfall with the thunderstorms on Tuesday lightning ignitions are possible, especially with the abnormally dry timber. * Outflow winds may exceed 50 mph. * Impacts...Lightning can create new fire starts and may combine with strong outflow winds to cause a fire to rapidly grow in size and intensity before first responders can contain them. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid outdoor activities that can cause a spark near dry vegetation, such as yard work, target shooting, or campfires. Follow local fire restrictions. Check weather.gov/reno for updates and livingwithfire.info for preparedness tips. && $$ NVZ420-429-300000- /O.EXT.KREV.FW.A.0008.210629T2100Z-210630T0600Z/ Northern Sierra Front including Carson City, Douglas, Storey, Southern Washoe, Western Lyon, and Far Southern Lassen Counties- Lahontan Basin including Churchill and Eastern Mineral Counties- 1255 PM PDT Mon Jun 28 2021 ...FIRE WEATHER WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH TUESDAY EVENING FOR THUNDERSTORMS AND STRONG OUTFLOW WINDS DURING A HEAT WAVE FOR 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 and Fire Zone 429 Lahontan Basin including Churchill and Eastern Mineral Counties. * Thunderstorms are forecast to develop during the late afternoon on Tuesday. Some storms may persist over the area well into Tuesday evening. Minimal rainfall is likely to occur allowing for a higher risk of dry lightning strikes. * Outflow winds may exceed 50 mph. * Impacts...Lightning can create new fire starts and may combine with strong outflow winds to cause a 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. && $$ CAZ271-272-278-300000- /O.EXT.KREV.FW.A.0008.210629T2100Z-210630T0600Z/ Western Lassen, Eastern Plumas, and Eastern Sierra Counties- Greater Lake Tahoe and Truckee Area-Eastern Lassen County- 1255 PM PDT Mon Jun 28 2021 ...FIRE WEATHER WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH TUESDAY EVENING FOR THUNDERSTORMS AND STRONG OUTFLOW WINDS DURING A HEAT WAVE FOR THE TAHOE BASIN AND NORTHEAST CALIFORNIA... * CHANGES...None. * Affected Area...Fire Zone 271 Western Lassen, Eastern Plumas, and Eastern Sierra Counties, Fire Zone 272 Greater Lake Tahoe and Truckee Area and Fire Zone 278 Eastern Lassen County. * Thunderstorms are forecast to develop during the late afternoon and evening hours on Tuesday. Despite some rainfall with the thunderstorms lightning ignitions are possible, especially with the abnormally dry timber. * Outflow winds may exceed 50 mph. * Impacts...Lightning can create new fire starts and may combine with strong outflow winds to cause a fire to rapidly grow in size and intensity before first responders can contain them. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid outdoor activities that can cause a spark near dry vegetation, such as yard work, target shooting, or campfires. Follow local fire restrictions. Check weather.gov/reno for updates and livingwithfire.info for preparedness tips. && $$ http://weather.gov/reno
429 WWUS85 KREV 291005 RFWREV URGENT - FIRE WEATHER MESSAGE National Weather Service Reno NV 305 AM PDT Tue Jun 29 2021 CAZ271-278-291115- /O.CAN.KREV.FW.A.0008.210629T2100Z-210630T0600Z/ Western Lassen, Eastern Plumas, and Eastern Sierra Counties- Eastern Lassen County- 305 AM PDT Tue Jun 29 2021 ...FIRE WEATHER WATCH IS CANCELLED FOR NORTHEAST CALIFORNIA... The National Weather Service in Reno has cancelled the Fire Weather Watch. Isolated thunderstorms are still expected this afternoon and evening for northeast CA, but coverage is expected to remain isolated. Fire officials should continue to monitor weather conditions closely as one or two thunderstorms with gusty outflow winds could still cause new lightning starts to spread quickly. $$ CAZ272-NVZ420-429-300600- /O.UPG.KREV.FW.A.0008.210629T2100Z-210630T0600Z/ /O.EXB.KREV.FW.W.0009.210629T2100Z-210630T0600Z/ Greater Lake Tahoe and Truckee Area- Northern Sierra Front including Carson City, Douglas, Storey, Southern Washoe, Western Lyon, and Far Southern Lassen Counties- Lahontan Basin including Churchill and Eastern Mineral Counties- 305 AM PDT Tue Jun 29 2021 ...RED FLAG WARNING IN EFFECT FROM 2 PM THIS AFTERNOON TO 11 PM PDT THIS EVENING FOR THUNDERSTORMS AND STRONG OUTFLOW WINDS DURING A HEAT WAVE FOR THE TAHOE BASIN AND PARTS OF WESTERN NV... The National Weather Service in Reno has upgraded the Fire Weather Watch to a Red Flag Warning for thunderstorms and strong outflow winds during a heatwave, which is in effect from 2 PM this afternoon to 11 PM PDT this evening. * CHANGES...Upgraded to a Red Flag Warning. * Affected Area...Fire Zone 272 Greater Lake Tahoe and Truckee Area, Fire Zone 420 Northern Sierra Front including Carson City, Douglas, Storey, Southern Washoe, Western Lyon, and Far Southern Lassen Counties and Fire Zone 429 Lahontan Basin including Churchill and Eastern Mineral Counties. * Thunderstorms are forecast to develop by late afternoon with storms and strong outflow winds persisting into the evening. Minimal rainfall is likely to occur allowing for a higher risk of dry lightning strikes. * Outflow winds will likely exceed 40 mph. * Impacts...Lightning can create new fire starts and may combine with strong outflow winds to cause a fire to rapidly grow in size and intensity before first responders can contain them. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid outdoor activities that can cause a spark near dry vegetation, such as yard work, target shooting, or campfires. Follow local fire restrictions. Check weather.gov/reno for updates and livingwithfire.info for preparedness tips. && $$ CAZ274-NVZ421-300600- /O.EXT.KREV.FW.W.0009.210629T2100Z-210630T0600Z/ Southern Mono County- Southern Sierra Front including Alpine, Northern Mono, Southern Lyon, and Western Mineral Counties- 305 AM PDT Tue Jun 29 2021 ...RED FLAG WARNING NOW IN EFFECT FROM 2 PM THIS AFTERNOON TO 11 PM PDT THIS EVENING FOR THUNDERSTORMS AND STRONG OUTFLOW WINDS DURING A HEAT WAVE FOR THE EASTERN SIERRA AND SOUTHERN SIERRA FRONT... * CHANGES...Extended the Red Flag Warning until 11 PM PDT. * Affected Area...Fire Zone 274 Southern Mono County, Fire Zone 421 Southern Sierra Front including Alpine, Northern Mono, Southern Lyon and Western Mineral Counties. * Thunderstorms are forecast to develop during the afternoon and evening hours today. Despite some heavy rainfall with these thunderstorms, lightning ignitions are possible, especially with the abnormally dry timber. * Outflow winds may exceed 40 mph. * Impacts...Lightning can create new fire starts and may combine with strong outflow winds to cause a 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 27, 11:21 AM PDT | Fire Weather Watch | REV | Churchill, Douglas, Lyon, Mineral, Storey, Washoe | 40 hr |
| Jun 27, 11:21 AM PDT | Red Flag Warning | REV | Douglas, Lyon, Mineral | 33 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.