Alert archive / Nevada / Red Flag Warnings in 2021

Red Flag Warning 10, NWS Elko, NV

August 4, 20214 counties in Nevada

NWS Elko, NV issued this red flag warning at Aug 4, 2021, 1:11 PM PDT for 4 counties in Nevada. It took effect at Aug 5, 2021, 10:00 AM PDT. It was in force for 13 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 4, 2021, 1:11 PM PDT (20:11 UTC)
In effect from
Aug 5, 2021, 10:00 AM PDT
Expired
Aug 5, 2021, 11:00 PM PDT
In force
13 hr
Issued by
NWS Elko, NV

Counties Elko County, NV, Eureka County, NV, Humboldt County, NV, Lander County, NV

The radar

The Elko radar (KLRX), 16 km from the middle of the area, began a volume at 20:14 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, 8.2 hours before the alert went out and 173 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 2021-08-04Temperature 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 2021-08-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 28 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
3544 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
28 m²/s²
0-3 km storm-relative helicity
118 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

135 
WWUS85 KLKN 042011
RFWLKN

URGENT - FIRE WEATHER MESSAGE
National Weather Service Elko NV
111 PM PDT Wed Aug 4 2021

NVZ437-060500-
/O.UPG.KLKN.FW.A.0007.210805T1700Z-210806T0500Z/
/O.NEW.KLKN.FW.W.0010.210805T1700Z-210806T0600Z/
Humboldt County-Quinn-
111 PM PDT Wed Aug 4 2021

...RED FLAG WARNING IN EFFECT FROM 10 AM TO 11 PM PDT THURSDAY
FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 
437...

The National Weather Service in Elko has issued a Red Flag
Warning, which is in effect from 10 AM to 11 PM PDT Thursday. The
Fire Weather Watch is no longer in effect. 

* WIND...West to southwest 15-25 mph with gusts up to 40 mph.

* HUMIDITY...as low as 4 percent.

* IMPACTS...The combination of gusty winds and low relative
  humidity will likely create critical fire weather conditions.
  Any fires that develop will likely spread rapidly. Outdoor
  burning is not recommended.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A red flag warning means that critical fire weather conditions
are either occurring now, or will shortly. A combination of
strong winds, low relative humidity, and warm temperatures can
contribute to extreme fire behavior.

&&

$$

NVZ424-438-060500-
/O.NEW.KLKN.FW.W.0010.210805T1700Z-210806T0600Z/
Southeastern Humboldt County and northern Lander County-
W Elko County, N Eureka and Lander Counties N of I80-
111 PM PDT Wed Aug 4 2021

...RED FLAG WARNING IN EFFECT FROM 10 AM TO 11 PM PDT THURSDAY
FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 
424 AND 438...

The National Weather Service in Elko has issued a Red Flag
Warning, which is in effect from 10 AM to 11 PM PDT Thursday. 

* AFFECTED AREA...Fire weather zones 424 and 438.

* WIND...West to southwest 15-25 mph with gusts up to 40 mph.

* HUMIDITY...as low as 6 percent.

* IMPACTS...The combination of gusty winds and low relative
  humidity will likely create critical fire weather conditions.
  Any fires that develop will likely spread rapidly. Outdoor
  burning is not recommended.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A red flag warning means that critical fire weather conditions
are either occurring now, or will shortly. A combination of
strong winds, low relative humidity, and warm temperatures can
contribute to extreme fire behavior.

&&

$$
2 follow-up statements
911 
WWUS85 KLKN 050928
RFWLKN

URGENT - FIRE WEATHER MESSAGE
National Weather Service Elko NV
228 AM PDT Thu Aug 5 2021


NVZ424-437-438-060600-
/O.CON.KLKN.FW.W.0010.210805T1700Z-210806T0600Z/
Southeastern Humboldt County and northern Lander County-
Humboldt County-Quinn-
W Elko County, N Eureka and Lander Counties N of I80-
228 AM PDT Thu Aug 5 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO
11 PM PDT THIS EVENING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY
FOR FIRE WEATHER ZONES 424 437 AND 438...

* Affected Area...Fire Weather Zone 424 Southeastern Humboldt 
  County and northern Lander County, Fire Weather Zone 437 
  Humboldt County-Quinn, Fire Weather Zone 438 W Elko County and 
  N Eureka and Lander Counties N of I80.

* WIND...West to southwest 15-25 mph with gusts up to 40 mph.

* HUMIDITY...as low as 4 percent.

* IMPACTS...The combination of gusty winds and low relative 
  humidity will likely create critical fire weather conditions. 
  Any fires that develop will likely spread rapidly. Outdoor 
  burning is not recommended.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A red flag warning means that critical fire weather conditions
are either occurring now, or will shortly. A combination of
strong winds, low relative humidity, and warm temperatures can
contribute to extreme fire behavior.

&&

$$
871 
WWUS85 KLKN 060552
RFWLKN

URGENT - FIRE WEATHER MESSAGE
National Weather Service Elko NV
1052 PM PDT Thu Aug 5 2021


NVZ424-437-438-060700-
/O.EXP.KLKN.FW.W.0010.000000T0000Z-210806T0600Z/
Southeastern Humboldt County and northern Lander County-
Humboldt County-Quinn-
W Elko County, N Eureka and Lander Counties N of I80-
1052 PM PDT Thu Aug 5 2021

...RED FLAG WARNING WILL EXPIRE AT 11 PM PDT THIS EVENING FOR
GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 424,
437, AND 438...

Winds are diminishing and RHs are rising across NW NV late this
evening. RH recoveries will continue to improve overnight, with
much lighter winds tonight and into Friday. 

$$

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.