Alert archive / California / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 21, NWS Reno, NV

July 18, 2002Mono County, California

NWS Reno, NV issued this severe thunderstorm warning at Jul 18, 2002, 10:50 AM PDT for Mono County, California. It was in force for 25 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 18, 2002, 10:50 AM PDT (17:50 UTC)
Expired: Jul 18, 2002, 11:15 AM PDT
In force: 25 min
Issued by: NWS Reno, NV
Area: Counties, with a storm outline in the text

County Mono County, CA

The radar

The Reno radar (KRGX), 177 km from the middle of the area, began a volume at 17:51 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, 5.8 hours before the alert went out and 170 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: 5 J/kg
Mixed-layer CIN: -261 J/kg
Mixed-layer LCL: 2165 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: -1 m²/s²
0-3 km storm-relative helicity: 25 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.

336 
WUUS55 KREV 181750
SVRREV
CAC051-181815-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE RENO NV
1049 AM PDT THU JUL 18 2002

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL MONO COUNTY IN CENTRAL CALIFORNIA
  THIS INCLUDES THE CITY OF BODIE

* UNTIL 1115 AM PDT

* AT 1046 AM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 5 MILES SOUTH OF BODIE...MOVING NORTH AT 15
  MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  BODIE AT 11 AM PDT

LARGE HAIL UP TO 1 INCH DIAMETER IS POSSIBLE WITH THIS SEVERE 
THUNDERSTORM. IF YOU ARE IN THE PATH OF THE STORM...PUT YOUR CAR IN 
A GARAGE AND MOVE TO A SUBSTANTIAL SHELTER.

REPORT DAMAGING WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE.

LAT...LON 3808 11917 3805 11894 3835 11885 3839 11913

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 18, 12:20 PM PDT	Severe Thunderstorm Warning	REV	Lassen, Plumas, Sierra	25 min
Jul 18, 12:38 PM PDT	Flash Flood Warning	REV	Lassen, Plumas	37 min
Jul 18, 12:59 PM PDT	Flash Flood Warning	REV	Nevada, Placer, Sierra	61 min
Jul 18, 1:10 PM PDT	Flash Flood Warning	REV	Lassen, Plumas, Sierra	80 min
Jul 18, 1:43 PM PDT	Flash Flood Warning	REV	El Dorado	92 min
Jul 18, 2:47 PM PDT	Flash Flood Warning	REV	Mono	58 min
Jul 18, 3:19 PM PDT	Flash Flood Warning	REV	Lassen, Nevada, Placer, Plumas, Sierra	101 min

Nearby

Severe Thunderstorm Warnings in California, 2002 Every severe thunderstorm warning in 2002

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.