Alert archive / Nevada / Red Flag Warnings in 2021
Red Flag Warning 11, NWS Reno, NV
NWS Reno, NV issued this red flag warning at Jul 7, 2021, 1:23 PM PDT for 7 counties in Nevada. It took effect at Jul 8, 2021, 2:00 PM PDT. It was in force for 8 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
- Jul 7, 2021, 1:23 PM PDT (20:23 UTC)
- In effect from
- Jul 8, 2021, 2:00 PM PDT
- Expired
- Jul 8, 2021, 10:00 PM PDT
- In force
- 8 hr
- Issued by
- NWS Reno, NV
Counties 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 20:25 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, 8.4 hours before the alert went out and 71 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
- 4123 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- -3 m²/s²
- 0-3 km storm-relative helicity
- 23 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
204 WWUS85 KREV 072023 RFWREV URGENT - FIRE WEATHER MESSAGE National Weather Service Reno NV 123 PM PDT Wed Jul 7 2021 NVZ420-421-090500- /O.UPG.KREV.FW.A.0010.210708T2100Z-210709T0500Z/ /O.NEW.KREV.FW.W.0011.210708T2100Z-210709T0500Z/ 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- 123 PM PDT Wed Jul 7 2021 ...RED FLAG WARNING IN EFFECT FROM 2 PM TO 10 PM PDT THURSDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR THE SIERRA FRONT... 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 to 10 PM PDT Thursday. The Fire Weather Watch is no longer in effect. * Changes...Upgraded to a Red Flag Warning. * Affected Area...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 and Western Mineral Counties. * Winds...Southwest 15 to 25 mph with gusts to 35 mph. Higher gusts are possible in wind prone locations along Highway 395. * Humidity...Minimum values of 8 to 12 percent. * Duration...3 to 6 hours. * Impacts...The combination of hot temperatures, gusty winds and low humidity can cause fire to rapidly grow in size and intensity before first responders can contain them. * 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. && $$ NVZ423-458-090500- /O.UPG.KREV.FW.A.0010.210708T2100Z-210709T0500Z/ /O.NEW.KREV.FW.W.0011.210708T2100Z-210709T0500Z/ West Humboldt Basin in Pershing County-Northern Washoe County- 123 PM PDT Wed Jul 7 2021 ...RED FLAG WARNING IN EFFECT FROM 2 PM TO 10 PM PDT THURSDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR PORTIONS OF NORTHWEST NEVADA... The National Weather Service in Reno has issued a Red Flag Warning for gusty winds and low humidity, which is in effect from 2 PM to 10 PM PDT Thursday. The Fire Weather Watch is no longer in effect. * Changes...Upgraded to a Red Flag Warning. * Affected Area...Fire Zone 423 West Humboldt Basin in Pershing County and Fire Zone 458 Northern Washoe County. * Winds...West to southwest 15 to 25 mph with gusts to 35 mph. * Humidity...Minimum values of 5 to 10 percent. * Duration...3 to 6 hours. * Impacts...The combination of very hot weather, gusty winds and low humidity can cause fire to rapidly grow in size and intensity before first responders can contain them. * Impacts...The combination of gusty winds and low humidity can cause fire to rapidly grow in size and intensity before first responders can contain them. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid outdoor activities that can cause a spark near dry vegetation, such as yard work, target shooting, or campfires. Follow local fire restrictions. Check weather.gov/reno for updates and livingwithfire.info for preparedness tips. && $$ http://weather.gov/reno
1 follow-up statement
608 WWUS85 KREV 090510 RFWREV URGENT - FIRE WEATHER MESSAGE National Weather Service Reno NV 1010 PM PDT Thu Jul 8 2021 NVZ420-421-423-458-090615- /O.EXP.KREV.FW.W.0011.000000T0000Z-210709T0500Z/ 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-Northern Washoe County- 1010 PM PDT Thu Jul 8 2021 ...RED FLAG WARNING HAS EXPIRED FOR GUSTY WINDS AND LOW HUMIDITY FOR PORTIONS OF NORTHWEST NEVADA... Winds have dropped below critical levels and are expected to continue a downward trend overnight. $$ http://weather.gov/reno
The office that day
Everything else NWS Reno, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 7, 9:15 AM PDT | Excessive Heat Warning | REV | Churchill, Douglas, Lyon, Mineral, Pershing, Storey and 1 more | 6 days |
Nearby
Red 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.