Alert archive / California / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 2, NWS Reno, NV

June 22, 2021Modoc County, California; Washoe County, Nevada

NWS Reno, NV issued this severe thunderstorm warning at Jun 22, 2021, 4:01 PM PDT for Modoc County, California; Washoe County, Nevada. It was in force for 44 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 22, 2021, 4:01 PM PDT (23:01 UTC)
Expired: Jun 22, 2021, 4:45 PM PDT
In force: 44 min
Issued by: NWS Reno, NV
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Modoc County, CA, Washoe County, NV

The nearest sounding before it

Medford/Jackson, OR (KMFR), launched 12:00Z, 11.0 hours before the alert went out and 240 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 88 J/kg
Mixed-layer CIN: -457 J/kg
Mixed-layer LCL: 1647 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 10 m²/s²
0-3 km storm-relative helicity: 29 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

367 
WUUS55 KREV 222301
SVRREV
CAC049-NVC031-222345-
/O.NEW.KREV.SV.W.0002.210622T2301Z-210622T2345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Reno NV
401 PM PDT Tue Jun 22 2021

The National Weather Service in Reno has issued a

* Severe Thunderstorm Warning for...
  Modoc County in northern California...
  Northern Washoe County in western Nevada...

* Until 445 PM PDT.

* At 400 PM PDT, a severe thunderstorm was located 12 miles east of
  Fort Bidwell, or 20 miles northeast of Lake City, moving north at
  20 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, fencing and trees.

* This severe thunderstorm will impact northwest parts of Washoe 
  County and northeastern parts of Modoc County. Strong outflow 
  winds may extend far from the storm and impact Fort Bidwell.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4176 11976 4171 11999 4193 12013 4196 12011
      4197 12009 4200 12001 4200 11981
TIME...MOT...LOC 2300Z 162DEG 17KT 4181 11991 

HAIL...1.00IN
WIND...60MPH
 
$$

CS

2 follow-up statements

259 
WWUS55 KREV 222328
SVSREV

Severe Weather Statement
National Weather Service Reno NV
428 PM PDT Tue Jun 22 2021

CAC049-NVC031-222345-
/O.CON.KREV.SV.W.0002.000000T0000Z-210622T2345Z/
Modoc CA-Washoe NV-
428 PM PDT Tue Jun 22 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM PDT
FOR MODOC AND NORTHERN WASHOE COUNTIES...

At 426 PM PDT, a severe thunderstorm was located 10 miles northeast
of Fort Bidwell, or 24 miles northeast of Lake City, moving north at
20 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, fencing and trees.

This severe thunderstorm will impact northwest parts of Washoe 
County and northeastern parts of Modoc County. Strong outflow winds 
may extend far from the storm and impact Fort Bidwell.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4176 11976 4171 11999 4193 12013 4196 12011
      4197 12009 4200 12001 4200 11981
TIME...MOT...LOC 2326Z 162DEG 17KT 4193 11996 

HAIL...1.00IN
WIND...60MPH
 
$$

AH

744 
WWUS55 KREV 222345
SVSREV

Severe Weather Statement
National Weather Service Reno NV
445 PM PDT Tue Jun 22 2021

CAC049-NVC031-222355-
/O.EXP.KREV.SV.W.0002.000000T0000Z-210622T2345Z/
Modoc CA-Washoe NV-
445 PM PDT Tue Jun 22 2021

...THE SEVERE THUNDERSTORM WARNING FOR MODOC AND NORTHERN WASHOE
COUNTIES HAS EXPIRED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been allowed to expire.  However gusty
winds are still possible with this thunderstorm.

LAT...LON 4176 11976 4171 11999 4193 12013 4196 12011
      4197 12009 4200 12001 4200 11981
TIME...MOT...LOC 2345Z 162DEG 17KT 4197 11998 

$$

AH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 22, 3:14 AM PDT	Lake Wind Advisory	REV	Mono	18 hr
Jun 22, 3:18 AM PDT	Red Flag Warning	REV	Madera, Mono	18 hr

Nearby

Severe Thunderstorm Warnings in California, 2021 Severe Thunderstorm Warnings in Nevada, 2021 Every severe thunderstorm 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.