Alert archive / California / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 13, NWS Reno, NV

June 29, 2008Lassen County, California

NWS Reno, NV issued this severe thunderstorm warning at Jun 29, 2008, 5:07 PM PDT for Lassen County, California. It was in force for 53 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 29, 2008, 5:07 PM PDT (00:07 UTC)
Expired: Jun 29, 2008, 6:00 PM PDT
In force: 53 min
Issued by: NWS Reno, NV
Area: Storm-based polygon

County Lassen County, CA

The radar

The Reno radar (KRGX), 174 km from the middle of the area, began a volume at 00:07 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

Medford/Jackson, OR (KMFR), launched 00:00Z, 0.1 hours before the alert went out and 233 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: 632 J/kg
Mixed-layer CIN: -155 J/kg
Mixed-layer LCL: 2834 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 47 m²/s²
0-3 km storm-relative helicity: 125 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.0

Open this sounding in Storm Lab

The text

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

000 
WUUS55 KREV 300009
SVRREV
CAC035-300100-
/O.NEW.KREV.SV.W.0013.080630T0007Z-080630T0100Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE RENO NV
507 PM PDT SUN JUN 29 2008

THE NATIONAL WEATHER SERVICE IN RENO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTH CENTRAL LASSEN COUNTY IN NORTHERN CALIFORNIA...
  THIS INCLUDES THE CITY OF TERMO...

* UNTIL 600 PM PDT

* AT 502 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM ALONG CALIFORNIA STATE ROAD 139 CAPABLE OF 
  PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. BRIEF HEAFY RAIN AND
  PENNY SIZE HAIL IS ALSO POSSIBLE. THIS STORM WAS LOCATED 16 MILES
  WEST OF TERMO...AND MOVING NORTHWEST AT 29 MPH. ANOTHER STORM EAST
  OF EAGLE LAKE WILL ALSO MOVE NORTHWEST ALONG THIS SAME PATH. 

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  JUNCTION CA 139 AND LASSEN HWY A2 BY 540 PM PDT...


STRONG WINDS WITH THESE STORMS WILL OCCUR WELL AHEAD OF ANY RAIN OR 
LIGHTNING. SEEK SHELTER IMMEDIATELY INSIDE A STURDY STRUCTURE AND 
STAY AWAY FROM WINDOWS. 

LAT...LON 4119 12072 4118 12069 4118 12053 4116 12042
      4072 12035 4059 12057 4107 12112
TIME...MOT...LOC 0007Z 142DEG 25KT 4093 12078

$$

GMCGUIRE

2 follow-up statements

000 
WWUS55 KREV 300045
SVSREV

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE RENO NV
537 PM PDT SUN JUN 29 2008

CAC035-300100-
/O.CON.KREV.SV.W.0013.000000T0000Z-080630T0100Z/
LASSEN CA-
537 PM PDT SUN JUN 29 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM PDT
FOR NORTH CENTRAL LASSEN COUNTY...

AT 532 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE 
HAIL...DAMAGING WINDS IN EXCESS OF 60 MPH AND BRIEF HEAVY RAIN.  
THIS STORM WAS LOCATED NEAR JUNCTION CA 139 AND LASSEN HWY A2...OR 
ABOUT 12 MILES EAST OF BIEBER...OR 5 MILES SOUTHEAST OF 
ADIN...MOVING NORTHWEST AT 30 MPH. ANOTHER STRONG THUNDERSTORM WAS 
ALSO LOCATED IN THE WARNED AREA 15 MILES NORTHEAST OF EAGLE LAKE AND 
WAS ALSO MOVING NORTHWEST AT 30 MPH.

IF YOU OBSERVED ANY STRONG WINDS OR WIND DAMAGE...HAIL...OR FLOODING 
FROM THESE STORMS...REPORT IT TO THE NATIONAL WEATHER SERVICE IN 
RENO. CALL OUR OFFICE AT 775-673-8100. YOUR REPORTS HELP US IMPROVE 
OUR WARNING PROCESS.

LAT...LON 4119 12072 4118 12069 4118 12053 4116 12042
      4072 12035 4059 12057 4107 12112
TIME...MOT...LOC 0037Z 142DEG 25KT 4109 12095

$$

GMCGUIRE

000 
WWUS55 KREV 300103
SVSREV

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE RENO NV
601 PM PDT SUN JUN 29 2008

CAC035-300111-
/O.EXP.KREV.SV.W.0013.000000T0000Z-080630T0100Z/
LASSEN CA-
601 PM PDT SUN JUN 29 2008

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL LASSEN COUNTY
EXPIRES AT 600 PM PDT...

THE STRONG THUNDERSTORM OVER NORTHERN LASSEN COUNTY 15 MILES 
SOUTHEAST OF ADIN WILL CONTINUE MOVING NORTH OUT OF THE WARNED AREA. 

IF YOU OBSERVED ANY STRONG WINDS OR WIND DAMAGE...HAIL...OR FLOODING 
FROM THESE STORMS...REPORT IT TO THE NATIONAL WEATHER SERVICE IN 
RENO. CALL OUR OFFICE AT 775-673-8100. YOUR REPORTS HELP US IMPROVE 
OUR WARNING PROCESS.

LAT...LON 4119 12072 4118 12069 4118 12053 4116 12042
      4072 12035 4059 12057 4107 12112
TIME...MOT...LOC 0045Z 142DEG 25KT 4113 12100

$$

GMCGUIRE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 29, 5:12 PM PDT	Severe Thunderstorm Warning	REV	Lassen	33 min
Jun 29, 5:45 PM PDT	Severe Thunderstorm Warning	REV	Lassen	45 min
Jun 29, 6:28 PM PDT	Flash Flood Warning	REV	Lassen	2 hr
Jun 29, 6:29 PM PDT	Severe Thunderstorm Warning	REV	Lassen	46 min
Jun 29, 8:09 PM PDT	Severe Thunderstorm Warning	REV	Lassen	35 min
Jun 30, 5:56 AM PDT	Red Flag Warning	REV	Modoc	14 hr

Nearby

Severe Thunderstorm Warnings in California, 2008 Every severe thunderstorm warning in 2008

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.