Alert archive / California / Red Flag Warnings in 2016

Red Flag Warning 12, NWS Reno, NV

July 20, 2016Washoe County, Nevada; Lassen County, Modoc County, California

NWS Reno, NV issued this red flag warning at Jul 20, 2016, 9:59 AM PDT for Washoe County, Nevada; Lassen County, Modoc County, California. It took effect at Jul 21, 2016, 1:00 PM PDT. It was in force for 7 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 20, 2016, 9:59 AM PDT (16:59 UTC)
In effect from
Jul 21, 2016, 1:00 PM PDT
Expired
Jul 21, 2016, 8:00 PM PDT
In force
7 hr
Issued by
NWS Reno, NV

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

The radar

The Reno radar (KRGX), 154 km from the middle of the area, began a volume at 17:04 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, 5.0 hours before the alert went out and 239 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 2016-07-20Temperature 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 2016-07-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 21 square meters per square second.1939587897Sfc1 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
2938 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
21 m²/s²
0-3 km storm-relative helicity
117 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

581 
WWUS85 KREV 201659
RFWREV

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE RENO NV
959 AM PDT WED JUL 20 2016

CAZ270-278-NVZ450-458-211400-
/O.UPG.KREV.FW.A.0006.160721T2000Z-160722T0300Z/
/O.NEW.KREV.FW.W.0012.160721T2000Z-160722T0300Z/
SURPRISE VALLEY CALIFORNIA-EASTERN LASSEN COUNTY-
WESTERN NEVADA SIERRA FRONT-NORTHERN WASHOE COUNTY-
959 AM PDT WED JUL 20 2016

...RED FLAG WARNING IN EFFECT FROM 1 PM TO 8 PM PDT THURSDAY FOR
GUSTY WINDS AND LOW HUMIDITY FOR PARTS OF NORTHEAST CALIFORNIA AND
NORTHWEST NEVADA INCLUDING 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
1 PM TO 8 PM PDT THURSDAY. THE FIRE WEATHER WATCH IS NO LONGER IN
EFFECT.

* AFFECTED AREA...FIRE ZONE 270 SURPRISE VALLEY CALIFORNIA, FIRE 
  ZONE 278 EASTERN LASSEN COUNTY, FIRE ZONE 450 WESTERN NEVADA 
  SIERRA FRONT AND FIRE ZONE 458 NORTHERN WASHOE COUNTY.

* WINDS...SOUTHWEST WINDS 15 TO 25 MPH WITH GUSTS 30 TO 40 MPH.

* HUMIDITY...7 TO 14%.

* 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
3 follow-up statements
298 
WWUS85 KREV 211311
RFWREV

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE RENO NV
611 AM PDT THU JUL 21 2016

CAZ270-278-NVZ450-458-220115-
/O.CON.KREV.FW.W.0012.160721T2000Z-160722T0300Z/
SURPRISE VALLEY CALIFORNIA-EASTERN LASSEN COUNTY-
WESTERN NEVADA SIERRA FRONT-NORTHERN WASHOE COUNTY-
611 AM PDT THU JUL 21 2016

...RED FLAG WARNING REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO
8 PM PDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR PARTS
OF NORTHEAST CALIFORNIA AND NORTHWEST NEVADA INCLUDING THE SIERRA
FRONT...

* AFFECTED AREA...FIRE ZONE 270 SURPRISE VALLEY CALIFORNIA, FIRE 
  ZONE 278 EASTERN LASSEN COUNTY, FIRE ZONE 450 WESTERN NEVADA 
  SIERRA FRONT AND FIRE ZONE 458 NORTHERN WASHOE COUNTY.

* WINDS...SOUTHWEST WINDS 15 TO 25 MPH WITH GUSTS 30 TO 40 MPH.

* HUMIDITY...5 TO 14%.

* 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
989 
WWUS85 KREV 212106
RFWREV

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE RENO NV
206 PM PDT THU JUL 21 2016

CAZ270-278-NVZ450-458-220300-
/O.CON.KREV.FW.W.0012.000000T0000Z-160722T0300Z/
SURPRISE VALLEY CALIFORNIA-EASTERN LASSEN COUNTY-
WESTERN NEVADA SIERRA FRONT-NORTHERN WASHOE COUNTY-
206 PM PDT THU JUL 21 2016

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING
FOR GUSTY WINDS AND LOW HUMIDITY FOR PARTS OF NORTHEAST
CALIFORNIA AND NORTHWEST NEVADA INCLUDING THE SIERRA FRONT...

* AFFECTED AREA...FIRE ZONE 270 SURPRISE VALLEY CALIFORNIA, FIRE 
  ZONE 278 EASTERN LASSEN COUNTY, FIRE ZONE 450 WESTERN NEVADA 
  SIERRA FRONT AND FIRE ZONE 458 NORTHERN WASHOE COUNTY.

* WINDS...SOUTHWEST WINDS 15 TO 25 MPH WITH GUSTS 30 TO 40 MPH.

* HUMIDITY...5 TO 14%.

* 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
635 
WWUS85 KREV 220314
RFWREV

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE RENO NV
814 PM PDT THU JUL 21 2016

CAZ270-278-NVZ450-458-220415-
/O.EXP.KREV.FW.W.0012.000000T0000Z-160722T0300Z/
SURPRISE VALLEY CALIFORNIA-EASTERN LASSEN COUNTY-
WESTERN NEVADA SIERRA FRONT-NORTHERN WASHOE COUNTY-
814 PM PDT THU JUL 21 2016

...RED FLAG WARNING HAS EXPIRED FOR GUSTY WINDS AND LOW HUMIDITY
FOR PARTS OF NORTHEAST CALIFORNIA AND NORTHWEST NEVADA...

WINDS HAVE DIMINISHED THIS EVENING WITH LIGHTER WINDS EXPECTED
OVERNIGHT. THEREFORE THE RED FLAG WARNING HAS BEEN ALLOWED TO
EXPIRE. 

$$

HTTP://WEATHER.GOV/RENO

The office that day

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

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

Nearby

Red Flag Warnings in California, 2016Red Flag Warnings in Nevada, 2016Every red flag warning in 2016

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.