Alert archive / California / Red Flag Warnings in 2017

Red Flag Warning 10, NWS Reno, NV

July 16, 2017Washoe County, Nevada; 4 counties in California

NWS Reno, NV issued this red flag warning at Jul 16, 2017, 8:32 AM PDT for Washoe County, Nevada; 4 counties in California. It took effect at Jul 18, 2017, 12:00 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 16, 2017, 8:32 AM PDT (15:32 UTC)
In effect from
Jul 18, 2017, 12:00 PM PDT
Expired
Jul 18, 2017, 8:00 PM PDT
In force
8 hr
Issued by
NWS Reno, NV

Counties Lassen County, CA, Modoc County, CA, Plumas County, CA, Sierra County, CA, Washoe County, NV

The nearest sounding before it

Reno, NV (KREV), launched 12:00Z, 3.5 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.

Skew-T log-pSkew-T log-p diagram, Reno, NV at 12:00Z on 2017-07-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Reno, NV at 12:00Z on 2017-07-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 84 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2709 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
84 m²/s²
0-3 km storm-relative helicity
196 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

130 
WWUS85 KREV 161532
RFWREV

URGENT - FIRE WEATHER MESSAGE
National Weather Service Reno NV
832 AM PDT Sun Jul 16 2017

CAZ270-271-278-NVZ450-453-458-459-170345-
/O.UPG.KREV.FW.A.0006.170718T1900Z-170719T0300Z/
/O.NEW.KREV.FW.W.0010.170718T1900Z-170719T0300Z/
/O.CON.KREV.FW.W.0009.170717T1900Z-170718T0300Z/
Surprise Valley California-
Western Lassen/Eastern Plumas/Eastern Sierra/Eastern Nevada
Counties-Eastern Lassen County-Western Nevada Sierra Front-
West Central Nevada Basin and Range-Northern Washoe County-
Mineral and Southern Lyon Counties-
832 AM PDT Sun Jul 16 2017

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 8 PM PDT
MONDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR PORTIONS OF WESTERN
NEVADA AND NORTHEAST CALIFORNIA...
...RED FLAG WARNING IN EFFECT FROM NOON TO 8 PM PDT TUESDAY FOR
GUSTY WINDS AND LOW HUMIDITY FOR PORTIONS OF WESTERN NEVADA AND 
NORTHEAST CALIFORNIA...

The National Weather Service in Reno has issued a Red Flag
Warning for gusty winds and low humidity, which remains in effect
from noon to 8 PM PDT Monday and is also in effect from noon to 8
PM PDT Tuesday. The Fire Weather Watch for Tuesday has been 
upgraded to a Red Flag Warning.

* PARTICULARLY DANGEROUS SITUATION...For areas downwind of the
  Long Valley Fire and MM155 Fire for Monday afternoon and
  evening. Strong winds will rapidly push fire in close proximity
  to local communities. Heed any evacuation orders. React quickly,
  you may not have much time to leave. 

* 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, Fire 
  Zone 450 Western Nevada Sierra Front, Fire Zone 453 West 
  Central Nevada Basin and Range, Fire Zone 458 Northern Washoe 
  County and Fire Zone 459 Mineral and Southern Lyon Counties.

* WINDS...West 15 to 20 mph with gusts to 35 to 40 mph on 
  Monday. Southwest 10 to 20 mph with gusts 25 to 35 mph on 
  Tuesday.

* HUMIDITY...5 to 12 percent.

* 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
7 follow-up statements
283 
WWUS85 KREV 162123
RFWREV

URGENT - FIRE WEATHER MESSAGE
National Weather Service Reno NV
223 PM PDT Sun Jul 16 2017

CAZ270-271-278-NVZ450-453-458-459-171300-
/O.CON.KREV.FW.W.0009.170717T1900Z-170718T0300Z/
/O.CON.KREV.FW.W.0010.170718T1900Z-170719T0300Z/
Surprise Valley California-
Western Lassen/Eastern Plumas/Eastern Sierra/Eastern Nevada
Counties-Eastern Lassen County-Western Nevada Sierra Front-
West Central Nevada Basin and Range-Northern Washoe County-
Mineral and Southern Lyon Counties-
223 PM PDT Sun Jul 16 2017

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 8 PM PDT
MONDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR PORTIONS OF WESTERN
NEVADA AND NORTHEAST CALIFORNIA...
...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 8 PM PDT
TUESDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR PORTIONS OF WESTERN
NEVADA AND NORTHEAST CALIFORNIA...

* PARTICULARLY DANGEROUS SITUATION...For areas downwind of the 
  Long Valley Fire and MM155 Fire for Monday afternoon and 
  evening. Strong winds will rapidly push fire in close 
  proximity to local communities. Heed any evacuation orders. 
  React quickly, you may not have much time to leave.

* 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, Fire 
  Zone 450 Western Nevada Sierra Front, Fire Zone 453 West 
  Central Nevada Basin and Range, Fire Zone 458 Northern Washoe 
  County and Fire Zone 459 Mineral and Southern Lyon Counties.

* WINDS...West 15 to 20 mph with gusts to 35 to 40 mph on 
  Monday. Southwest 10 to 20 mph with gusts 25 to 35 mph on 
  Tuesday.

* HUMIDITY...5 to 12 percent.

* 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. Existing fires will possibly break
  containment lines as spotting and the rate of fire spread 
  increases. 

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
717 
WWUS85 KREV 171025
RFWREV

URGENT - FIRE WEATHER MESSAGE
National Weather Service Reno NV
325 AM PDT Mon Jul 17 2017

CAZ270-271-278-NVZ450-453-458-459-180000-
/O.CON.KREV.FW.W.0009.170717T1900Z-170718T0300Z/
/O.CON.KREV.FW.W.0010.170718T1900Z-170719T0300Z/
Surprise Valley California-
Western Lassen/Eastern Plumas/Eastern Sierra/Eastern Nevada
Counties-Eastern Lassen County-Western Nevada Sierra Front-
West Central Nevada Basin and Range-Northern Washoe County-
Mineral and Southern Lyon Counties-
325 AM PDT Mon Jul 17 2017

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 8 PM PDT
THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR PORTIONS OF
WESTERN NEVADA AND NORTHEAST CALIFORNIA...
...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 8 PM PDT
TUESDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR PORTIONS OF WESTERN
NEVADA AND NORTHEAST CALIFORNIA...

* PARTICULARLY DANGEROUS SITUATION...For areas downwind of the
  Long Valley Fire and MM155 Fire for this afternoon and evening.
  Strong winds will rapidly push fire in close proximity to local
  communities. Heed any evacuation orders. React quickly, you may
  not have much time to leave.

* 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, Fire 
  Zone 450 Western Nevada Sierra Front, Fire Zone 453 West 
  Central Nevada Basin and Range, Fire Zone 458 Northern Washoe 
  County and Fire Zone 459 Mineral and Southern Lyon Counties.

* WINDS...West 15 to 20 mph with gusts to 35 to 40 mph on 
  Monday. Southwest 10 to 20 mph with gusts 25 to 35 mph on 
  Tuesday.

* HUMIDITY...5 to 12 percent.

* 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. Existing fires will possibly 
  break containment lines as spotting and the rate of fire 
  spread increases.

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
195 
WWUS85 KREV 172139
RFWREV

URGENT - FIRE WEATHER MESSAGE
National Weather Service Reno NV
239 PM PDT Mon Jul 17 2017

CAZ270-271-278-NVZ450-453-458-459-180300-
/O.CON.KREV.FW.W.0009.000000T0000Z-170718T0300Z/
/O.CON.KREV.FW.W.0010.170718T1900Z-170719T0300Z/
Surprise Valley California-
Western Lassen/Eastern Plumas/Eastern Sierra/Eastern Nevada
Counties-Eastern Lassen County-Western Nevada Sierra Front-
West Central Nevada Basin and Range-Northern Washoe County-
Mineral and Southern Lyon Counties-
239 PM PDT Mon Jul 17 2017

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING
FOR GUSTY WINDS AND LOW HUMIDITY FOR PORTIONS OF WESTERN NEVADA
AND NORTHEAST CALIFORNIA...

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 8 PM PDT
TUESDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR PORTIONS OF WESTERN
NEVADA AND NORTHEAST CALIFORNIA...

* PARTICULARLY DANGEROUS SITUATION...For areas downwind of the
  Long Valley and MM155 Fires. Strong winds could rapidly push 
  fire into close proximity of local communities during the 
  afternoon and evening. Heed any evacuation orders. React quickly, 
  you may not have much time to leave.

* 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, Fire 
  Zone 450 Western Nevada Sierra Front, Fire Zone 453 West 
  Central Nevada Basin and Range, Fire Zone 458 Northern Washoe 
  County and Fire Zone 459 Mineral and Southern Lyon Counties.

* WINDS...Southwest to west 10 to 20 mph with gusts to 35 mph.

* HUMIDITY...6 to 12 percent.

* 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. Existing fires will possibly break
  containment lines as spotting and the rate of fire spread 
  increases.

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
629 
WWUS85 KREV 180258
RFWREV

URGENT - FIRE WEATHER MESSAGE
National Weather Service Reno NV
758 PM PDT Mon Jul 17 2017

CAZ270-271-278-NVZ450-453-458-459-181500-
/O.EXP.KREV.FW.W.0009.000000T0000Z-170718T0300Z/
/O.CON.KREV.FW.W.0010.170718T1900Z-170719T0300Z/
Surprise Valley California-
Western Lassen/Eastern Plumas/Eastern Sierra/Eastern Nevada
Counties-Eastern Lassen County-Western Nevada Sierra Front-
West Central Nevada Basin and Range-Northern Washoe County-
Mineral and Southern Lyon Counties-
758 PM PDT Mon Jul 17 2017

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 8 PM PDT
TUESDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR PORTIONS OF WESTERN
NEVADA AND NORTHEAST CALIFORNIA...
...RED FLAG WARNING WILL EXPIRE AT 8 PM PDT THIS EVENING FOR
GUSTY WINDS AND LOW HUMIDITY FOR PORTIONS OF WESTERN NEVADA AND
NORTHEAST CALIFORNIA...

* PARTICULARLY DANGEROUS SITUATION...For areas downwind of the
  Long Valley and MM155 Fires. Strong winds could rapidly push
  fire into close proximity of local communities Tuesday afternoon
  and evening. Heed any evacuation orders. React quickly, you may
  not have much time to leave.

* 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, Fire 
  Zone 450 Western Nevada Sierra Front, Fire Zone 453 West 
  Central Nevada Basin and Range, Fire Zone 458 Northern Washoe 
  County and Fire Zone 459 Mineral and Southern Lyon Counties.

* WINDS...Southwest to west 10 to 20 mph with gusts to 35 mph.

* HUMIDITY...6 to 12 percent.

* 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. Existing fires will possibly 
  break containment lines as spotting and the rate of fire 
  spread increases.

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
281 
WWUS85 KREV 181050
RFWREV

URGENT - FIRE WEATHER MESSAGE
National Weather Service Reno NV
350 AM PDT Tue Jul 18 2017

CAZ270-271-278-NVZ450-453-458-459-190000-
/O.CON.KREV.FW.W.0010.170718T1900Z-170719T0300Z/
Surprise Valley California-
Western Lassen/Eastern Plumas/Eastern Sierra/Eastern Nevada
Counties-Eastern Lassen County-Western Nevada Sierra Front-
West Central Nevada Basin and Range-Northern Washoe County-
Mineral and Southern Lyon Counties-
350 AM PDT Tue Jul 18 2017

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 8 PM PDT
THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR PORTIONS OF
WESTERN NEVADA AND NORTHEAST CALIFORNIA...

* PARTICULARLY DANGEROUS SITUATION...For areas downwind of the
  Long Valley and MM155 Fires. Strong winds could rapidly push
  fire into close proximity of local communities this afternoon 
  and evening. Heed any evacuation orders. React quickly, you may 
  not have much time to leave.

* 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, Fire 
  Zone 450 Western Nevada Sierra Front, Fire Zone 453 West 
  Central Nevada Basin and Range, Fire Zone 458 Northern Washoe 
  County and Fire Zone 459 Mineral and Southern Lyon Counties.

* WINDS...Southwest to west 10 to 20 mph with gusts to 35 mph.

* HUMIDITY...6 to 12 percent.

* 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. Existing fires will possibly 
  break containment lines as spotting and the rate of fire 
  spread increases.

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
688 
WWUS85 KREV 182202
RFWREV

URGENT - FIRE WEATHER MESSAGE
National Weather Service Reno NV
302 PM PDT Tue Jul 18 2017

CAZ270-271-278-NVZ450-453-458-459-190300-
/O.CON.KREV.FW.W.0010.000000T0000Z-170719T0300Z/
Surprise Valley California-
Western Lassen/Eastern Plumas/Eastern Sierra/Eastern Nevada
Counties-Eastern Lassen County-Western Nevada Sierra Front-
West Central Nevada Basin and Range-Northern Washoe County-
Mineral and Southern Lyon Counties-
302 PM PDT Tue Jul 18 2017

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING
FOR GUSTY WINDS AND LOW HUMIDITY FOR PORTIONS OF WESTERN NEVADA
AND NORTHEAST CALIFORNIA...

* PARTICULARLY DANGEROUS SITUATION...For areas downwind of the
  Long Valley and MM155 Fires. Strong winds could rapidly push
  fire into close proximity of local communities this evening. 
  Heed any evacuation orders. React quickly, you may not have much
  time to leave.

* 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, Fire 
  Zone 450 Western Nevada Sierra Front, Fire Zone 453 West 
  Central Nevada Basin and Range, Fire Zone 458 Northern Washoe 
  County and Fire Zone 459 Mineral and Southern Lyon Counties.

* WINDS...Southwest to west 10 to 20 mph with gusts to 35 mph this
  evening becoming west around 10 mph with gusts to 20 mph after 
  8 pm.

* HUMIDITY...6 to 12 percent, rising to 15 to 20 percent after 8
  pm.

* 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. Existing fires will possibly 
  break containment lines as spotting and the rate of fire 
  spread increases.

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
413 
WWUS85 KREV 190258
RFWREV

URGENT - FIRE WEATHER MESSAGE
National Weather Service Reno NV
758 PM PDT Tue Jul 18 2017

CAZ270-271-278-NVZ450-453-458-459-190400-
/O.EXP.KREV.FW.W.0010.000000T0000Z-170719T0300Z/
Surprise Valley California-
Western Lassen/Eastern Plumas/Eastern Sierra/Eastern Nevada
Counties-Eastern Lassen County-Western Nevada Sierra Front-
West Central Nevada Basin and Range-Northern Washoe County-
Mineral and Southern Lyon Counties-
758 PM PDT Tue Jul 18 2017

...RED FLAG WARNING WILL EXPIRE AT 8 PM PDT THIS EVENING FOR 
PORTIONS OF WESTERN NEVADA AND NORTHEAST CALIFORNIA...

Winds have diminished this evening. A few locations may receive
wind gusts around 25 mph with humidity slow to recover through 
midnight, so continue to follow local fire restrictions. Avoid 
outdoor activities that can cause a spark near dry vegetation, 
such as yard work, target shooting, or campfires. 

$$

http://weather.gov/reno

The office that day

Everything else NWS Reno, NV issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 16, 2:20 PM PDTLake Wind AdvisoryREVChurchill, Douglas, Lyon, Pershing, Storey, Washoe30 hr

Nearby

Red Flag Warnings in California, 2017Red Flag Warnings in Nevada, 2017Every red flag warning in 2017

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.