Alert archive / Nevada / Red Flag Warnings in 2020

Red Flag Warning 9, NWS Reno, NV

June 23, 2020Douglas County, Lyon County, Mineral County, Nevada

NWS Reno, NV issued this red flag warning at Jun 23, 2020, 5:46 AM PDT for Douglas County, Lyon County, Mineral County, Nevada. It took effect at Jun 23, 2020, 2:00 PM PDT. It was in force for 6 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
Jun 23, 2020, 5:46 AM PDT (12:46 UTC)
In effect from
Jun 23, 2020, 2:00 PM PDT
Expired
Jun 23, 2020, 8:00 PM PDT
In force
6 hr
Issued by
NWS Reno, NV

Counties Douglas County, NV, Lyon County, NV, Mineral County, NV

The radar

The Reno radar (KRGX), 109 km from the middle of the area, began a volume at 12:50 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, 0.8 hours before the alert went out and 112 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 2020-06-23Temperature 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 2020-06-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -48 square meters per square second.1939Sfc1 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
3132 m above ground
0-6 km bulk shear
3 kt
0-1 km storm-relative helicity
-48 m²/s²
0-3 km storm-relative helicity
16 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

510 
WWUS85 KREV 231246
RFWREV

URGENT - FIRE WEATHER MESSAGE
National Weather Service Reno NV
546 AM PDT Tue Jun 23 2020

NVZ421-240300-
/O.NEW.KREV.FW.W.0009.200623T2100Z-200624T0300Z/
Southern Sierra Front including Alpine, Northern Mono, Southern
Lyon, and Western Mineral Counties-
546 AM PDT Tue Jun 23 2020

...RED FLAG WARNING IN EFFECT FROM 2 PM THIS AFTERNOON TO 8 PM
PDT THIS EVENING FOR THUNDERSTORMS WITH DRY LIGHTNING AND STRONG 
OUTFLOW WINDS FOR THE SOUTHERN SIERRA FRONT...

The National Weather Service in Reno has issued a Red Flag
Warning for thunderstorms and strong outflow winds, which is in
effect from 2 PM this afternoon to 8 PM PDT this evening.

* Affected Area...Fire Zone 421 Southern Sierra Front including
  Alpine, Northern Mono, Southern Lyon and Western Mineral 
  Counties.

* Thunderstorms...Scattered thunderstorms from 2 pm this afternoon
  through 8 pm this evening. Thunderstorms will be a mix of wet
  and dry storms.

* Outflow Winds...Wind gusts up to 50 mph from any thunderstorm.

* Impacts...Lightning can create new fire starts and may combine
  with strong outflow winds to cause a fire to rapidly grow in
  size and intensity.

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
775 
WWUS85 KREV 240244
RFWREV

URGENT - FIRE WEATHER MESSAGE
National Weather Service Reno NV
744 PM PDT Tue Jun 23 2020

NVZ421-240345-
/O.EXP.KREV.FW.W.0009.000000T0000Z-200624T0300Z/
Southern Sierra Front including Alpine, Northern Mono, Southern
Lyon, and Western Mineral Counties-
744 PM PDT Tue Jun 23 2020

...RED FLAG WARNING WILL EXPIRE AT 8 PM PDT THIS EVENING FOR
THUNDERSTORMS WITH DRY LIGHTNING AND STRONG OUTFLOW WINDS FOR THE
SOUTHERN SIERRA FRONT...

Thunderstorms have moved out of the area this evening and are not
expected to redevelop. Therefore, the Red Flag Warning will be
allowed to expire.

$$

http://weather.gov/reno

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 23, 2:57 PM PDTSpecial Weather StatementREVDouglas48 min

Nearby

Red Flag Warnings in Nevada, 2020Every red flag warning in 2020

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.