Alert archive / California / Red Flag Warnings in 2018
Red Flag Warning 13, NWS Reno, NV
NWS Reno, NV issued this red flag warning at Aug 10, 2018, 9:31 AM PDT for 4 counties in California; Washoe County, Nevada. It took effect at Aug 11, 2018, 11:00 AM PDT. It was in force for 10 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
- Aug 10, 2018, 9:31 AM PDT (16:31 UTC)
- In effect from
- Aug 11, 2018, 11:00 AM PDT
- Expired
- Aug 11, 2018, 9:00 PM PDT
- In force
- 10 hr
- Issued by
- NWS Reno, NV
Counties Lassen County, CA, Modoc County, CA, Plumas County, CA, Sierra County, CA, Washoe County, NV
The radar
The Reno radar (KRGX), 119 km from the middle of the area, began a volume at 16:33 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, 4.5 hours before the alert went out and 219 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
- 4221 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- -25 m²/s²
- 0-3 km storm-relative helicity
- 44 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
630 WWUS85 KREV 101631 RFWREV URGENT - FIRE WEATHER MESSAGE National Weather Service Reno NV 931 AM PDT Fri Aug 10 2018 CAZ270-271-278-NVZ458-110445- /O.UPG.KREV.FW.A.0013.180811T1800Z-180812T0400Z/ /O.NEW.KREV.FW.W.0013.180811T1800Z-180812T0400Z/ Surprise Valley California- Western Lassen/Eastern Plumas/Eastern Sierra/Eastern Nevada Counties-Eastern Lassen County-Northern Washoe County- 931 AM PDT Fri Aug 10 2018 ...RED FLAG WARNING IN EFFECT FROM 11 AM TO 9 PM PDT SATURDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR PORTIONS OF NORTHEASTERN CALIFORNIA AND NORTHERN WASHOE COUNTY... The National Weather Service in Reno has issued a Red Flag Warning for gusty winds and low humidity, which is in effect from 11 AM to 9 PM PDT Saturday. The Fire Weather Watch has been upgraded to a Red Flag Warning and is no longer in effect. * AFFECTED AREA...Fire Zone 270 Surprise Valley California, Fire Zone 271 Western Lassen/Eastern Plumas/Eastern Sierra/Eastern Nevada Counties, Fire Zone 278 Eastern Lassen County and Fire Zone 458 Northern Washoe County. * Winds Saturday...Southwest 15 to 25 mph with gusts to 35 mph. * Minimum Humidity...8 to 15%. * 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. && $$ http://weather.gov/reno
4 follow-up statements
500 WWUS85 KREV 102312 RFWREV URGENT - FIRE WEATHER MESSAGE National Weather Service Reno NV 412 PM PDT Fri Aug 10 2018 CAZ270-271-278-NVZ458-111400- /O.CON.KREV.FW.W.0013.180811T1800Z-180812T0400Z/ Surprise Valley California- Western Lassen/Eastern Plumas/Eastern Sierra/Eastern Nevada Counties-Eastern Lassen County-Northern Washoe County- 412 PM PDT Fri Aug 10 2018 ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM TO 9 PM PDT SATURDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR PORTIONS OF NORTHEASTERN CALIFORNIA AND NORTHERN WASHOE COUNTY... * AFFECTED AREA...Fire Zone 270 Surprise Valley California, Fire Zone 271 Western Lassen/Eastern Plumas/Eastern Sierra/Eastern Nevada Counties, Fire Zone 278 Eastern Lassen County and Fire Zone 458 Northern Washoe County. * Winds Saturday...Southwest 15 to 25 mph with gusts to 35 mph. * Minimum Humidity...8 to 15%. * Duration...3 to 7 hours. * Impacts...The combination of gusty winds and low humidity can cause fire to rapidly grow in size and intensity before first responders can contain them. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid outdoor activities that can cause a spark near dry vegetation, such as yard work, target shooting, or campfires. Follow local fire restrictions. Check weather.gov/reno for updates and livingwithfire.info for preparedness tips. && $$ http://weather.gov/reno
996 WWUS85 KREV 111258 RFWREV URGENT - FIRE WEATHER MESSAGE National Weather Service Reno NV 558 AM PDT Sat Aug 11 2018 CAZ270-271-278-NVZ458-120100- /O.CON.KREV.FW.W.0013.180811T1800Z-180812T0400Z/ Surprise Valley California- Western Lassen/Eastern Plumas/Eastern Sierra/Eastern Nevada Counties-Eastern Lassen County-Northern Washoe County- 558 AM PDT Sat Aug 11 2018 ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 9 PM PDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR PORTIONS OF NORTHEASTERN CALIFORNIA AND NORTHERN WASHOE COUNTY... * AFFECTED AREA...Fire Zone 270 Surprise Valley California, Fire Zone 271 Western Lassen/Eastern Plumas/Eastern Sierra/Eastern Nevada Counties, Fire Zone 278 Eastern Lassen County and Fire Zone 458 Northern Washoe County. * Winds Saturday...Southwest 15 to 25 mph with gusts to 35 mph. * Minimum Humidity...6 to 14%. * 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. && $$ http://weather.gov/reno
237 WWUS85 KREV 111959 RFWREV URGENT - FIRE WEATHER MESSAGE National Weather Service Reno NV 1259 PM PDT Sat Aug 11 2018 CAZ270-271-278-NVZ458-120400- /O.CON.KREV.FW.W.0013.000000T0000Z-180812T0400Z/ Surprise Valley California- Western Lassen/Eastern Plumas/Eastern Sierra/Eastern Nevada Counties-Eastern Lassen County-Northern Washoe County- 1259 PM PDT Sat Aug 11 2018 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR PORTIONS OF NORTHEASTERN CALIFORNIA AND NORTHERN WASHOE COUNTY... * AFFECTED AREA...Fire Zone 270 Surprise Valley California, Fire Zone 271 Western Lassen/Eastern Plumas/Eastern Sierra/Eastern Nevada Counties, Fire Zone 278 Eastern Lassen County and Fire Zone 458 Northern Washoe County. * Winds...Southwest 15 to 25 mph with gusts to 35 mph. * Minimum Humidity...6 to 14%. * Duration...3 to 7 hours. * Impacts...The combination of gusty winds and low humidity can cause fire to rapidly grow in size and intensity before first responders can contain them. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid outdoor activities that can cause a spark near dry vegetation, such as yard work, target shooting, or campfires. Follow local fire restrictions. Check weather.gov/reno for updates and livingwithfire.info for preparedness tips. && $$ http://weather.gov/reno
109 WWUS85 KREV 120403 RFWREV URGENT - FIRE WEATHER MESSAGE National Weather Service Reno NV 903 PM PDT Sat Aug 11 2018 CAZ270-271-278-NVZ458-120515- /O.EXP.KREV.FW.W.0013.000000T0000Z-180812T0400Z/ Surprise Valley California- Western Lassen/Eastern Plumas/Eastern Sierra/Eastern Nevada Counties-Eastern Lassen County-Northern Washoe County- 903 PM PDT Sat Aug 11 2018 ...RED FLAG WARNING HAS EXPIRED FOR GUSTY WINDS AND LOW HUMIDITY FOR PORTIONS OF NORTHEASTERN CALIFORNIA AND NORTHERN WASHOE COUNTY... Humidity levels remain dry and poor recoveries is still expected for midslopes. However winds were dropping off and will become light overnight. So critical fire weather conditions have ended for the night. $$ http://weather.gov/reno
The office that day
Everything else NWS Reno, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 10, 2:59 AM PDT | Fire Weather Watch | REV | Lassen, Modoc, Plumas, Sierra | 7 hr |
Nearby
Red Flag Warnings in California, 2018Red Flag Warnings in Nevada, 2018Every red flag warning in 2018
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.