Alert archive / California / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 13, NWS Reno, NV

July 1, 2015Alpine County, Mono County, California

NWS Reno, NV issued this severe thunderstorm warning at Jul 1, 2015, 4:19 PM PDT for Alpine County, Mono County, California. It was in force for 41 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: Jul 1, 2015, 4:19 PM PDT (23:19 UTC)
Expired: Jul 1, 2015, 5:00 PM PDT
In force: 41 min
Issued by: NWS Reno, NV
Area: Storm-based polygon

Counties Alpine County, CA, Mono County, CA

The radar

The Reno radar (KRGX), 149 km from the middle of the area, began a volume at 23:21 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, 11.3 hours before the alert went out and 174 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2475 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: -17 m²/s²
0-3 km storm-relative helicity: 74 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

296 
WUUS55 KREV 012319
SVRREV
CAC003-051-020000-
/O.NEW.KREV.SV.W.0013.150701T2319Z-150702T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE RENO NV
419 PM PDT WED JUL 1 2015

THE NATIONAL WEATHER SERVICE IN RENO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ALPINE COUNTY IN NORTHERN CALIFORNIA...
  NORTHERN MONO COUNTY IN NORTHERN CALIFORNIA...

* UNTIL 500 PM PDT

* AT 417 PM PDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS 
  STORM WAS LOCATED NEAR DEVILS GATE SUMMIT ALONG HIGHWAY 395...OR 
  11 MILES SOUTHEAST OF COLEVILLE...AND MOVING WEST AT 15 MPH. PENNY 
  SIZE HAIL MAY ALSO ACCOMPANY THE DAMAGING WINDS AND FREQUENT 
  LIGHTNING.

* LOCATIONS IMPACTED INCLUDE...
  DEVILS GATE SUMMIT...WALKER RIVER CANYON ALONG HIGHWAY 395...
  MOUNTAIN WARFARE TRAINING CENTER...
  BOOTLEG CAMPGROUND AND JUNCTION U.S 395 AND CA 108 (SONORA 
  JUNCTION).

* THIS STORM WILL ALSO PRODUCE HEAVY RAINFALL AND POSSIBLE ROCK 
  SLIDES ALONG HIGHWAY 395 IN THE WALKER RIVER CANYON. DO NOT DRIVE 
  OVER WATER COVERED ROADWAYS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

&&

LAT...LON 3833 11963 3841 11967 3843 11967 3860 11961
      3847 11929 3831 11934
TIME...MOT...LOC 2317Z 104DEG 13KT 3842 11942 

$$

CS

1 follow-up statement

174 
WWUS55 KREV 012339
SVSREV

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE RENO NV
439 PM PDT WED JUL 1 2015

CAC003-051-020000-
/O.CON.KREV.SV.W.0013.000000T0000Z-150702T0000Z/
ALPINE CA-MONO CA-
439 PM PDT WED JUL 1 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM PDT
FOR ALPINE AND MONO COUNTIES...

* AT 437 PM PDT...DOPPLER RADAR INDICATED A LINE OF SEVERE 
  THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 
  MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM NEAR 
  WALKER TO NEAR TOPAZ LAKE...MOVING NORTHWEST AT 15 MPH. PENNY SIZE 
  HAIL MAY ALSO ACCOMPANY THE DAMAGING WINDS.

* LOCATIONS IMPACTED INCLUDE... WALKER, TOPAZ LAKE, AND BOOTLEG 
  CAMPGROUND. TRAVELERS ALONG HIGHWAY 395 NEAR COLEVILLE, TOPAZ 
  LAKE, AND WALKER MAY ENCOUNTER VERY HEAVY RAINS. WATCH FOR AREAS 
  OF FLASH FLOODING AND DO NOT DRIVE THROUGH FLOODED ROADWAYS. 

LAT...LON 3838 11956 3843 11967 3860 11961 3847 11929
      3837 11933
TIME...MOT...LOC 2337Z 130DEG 21KT 3845 11953 3867 11953 

$$

CS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 1, 2:19 PM PDT	Special Weather Statement	REV	Mono	41 min
Jul 1, 2:49 PM PDT	Special Weather Statement	REV	Alpine	41 min
Jul 1, 3:06 PM PDT	Special Weather Statement	REV	Alpine	54 min
Jul 1, 3:17 PM PDT	Flash Flood Warning	REV	Alpine	3 hr
Jul 1, 3:46 PM PDT	Special Weather Statement	REV	Mono	44 min

Nearby

Severe Thunderstorm Warnings in California, 2015 Every severe thunderstorm warning in 2015

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.