Severe Thunderstorm Warning 20, NWS Reno, NV

Issued

Aug 20, 2004, 2:52 PM PDT (21:52 UTC)

Expired

Aug 20, 2004, 3:30 PM PDT

In force

38 min

Issued by

NWS Reno, NV

Area

Counties, with a storm outline in the text

County Mineral County, NV

The Reno radar (KRGX), 180 km from the middle of the area, began a volume at 21:53 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.

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

000 
WUUS55 KREV 202152
SVRREV
NVC021-202230-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE RENO NV
251 PM PDT FRI AUG 20 2004

THE NATIONAL WEATHER SERVICE IN RENO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTH CENTRAL MINERAL COUNTY IN WESTERN NEVADA

* UNTIL 330 PM PDT

* AT 250 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DIME SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED OVER
  SOUTH CENTRAL MINERAL COUNTY...OR ABOUT 22 MILES EAST OF BODIE...
  AND ABOUT 10 MILES SOUTH OF HAWTHORNE AND MOVING EAST AT 5 MPH.

* THE SEVERE THUNDERSTORM WILL REMAIN IN...
  RURAL SOUTHERN MINERAL COUNTY AT 310 PM PDT

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

LAT...LON 3839 11875 3828 11880 3809 11866 3802 11838
      3841 11855

$$

RM

NWS Reno, NV wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 20, 2:35 PM PDT, 17 minutes earlier.

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE RENO NV
235 PM PDT FRI AUG 20 2004

.SHORT TERM...
UPPER LOW OFF CENTRAL CA COAST AND WEAK VORTICITY CENTER OVER
NORTHCENTRAL NV IS DEPICTED WELL ON WATER VAPOR IMAGERY THIS
AFTERNOON. THE OFFSHORE LOW IS MOVING SLOWLY SOUTH-SOUTHWEST WHILE
THE VORT MAX IS MOVING SOUTHEAST. THE MAIN DEFORMATION AXIS BETWEEN
THESE FEATURES WAS EAST-WEST THROUGH THE LAKE TAHOE AREA.
THUNDERSTORMS HAVE DEVELOPED SOUTH OF THE DEFORMATION ALONG A
SURFACE THERMAL TROUGH CURRENTLY OVER THE SIERRA. OTHER
THUNDERSTORMS WERE FORMING OVER NORTHERN WASHOE AND NORTHERN LASSEN
COUNTIES WHERE SOME DYNAMICS WERE BEING GENERATED BY THE NEARBY
VORTICITY MAX. CUMULUS CLOUDS WERE FORMING OVER OTHER PORTIONS OF
THE CWA BUT HAVE NOT PRODUCED LIGHTNING YET.

CHANGES ARE EXPECTED IN THE LARGE SCALE PATTERN OVER THE NEXT FEW
DAYS AS A SERIES OF SHORT WAVES CARVE OUT A TROUGH OVER THE PACIFIC
NORTHWEST. ONE SHORT WAVE PUSHES A COLD FRONT INTO NORTHWEST NV
SUNDAY EVENING WITH GUSTY WINDS PRECEDING THE FRONT IN THE
AFTERNOON. A SECOND SHORT WAVE DEEPENS THE TROUGH MONDAY AND MONDAY
NIGHT WITH BREEZY AND COOLER CONDITIONS EXPECTED ACROSS THE SIERRA
AND WESTERN NV. TEMPERATURES WILL COOL TO READINGS SLIGHTLY BELOW
NORMAL BY MONDAY AND COULD SEVERAL DEGREES LOWER IF THE TROUGH DROPS
FARTHER SOUTH THAN CURRENTLY FORECAST. RC

.LONG TERM...TUESDAY THROUGH FRIDAY...
NOT MUCH CHANGE TO CURRENT EXTENDED FORECAST. TROUGH STILL PROGGED
TO MOVE INTO PACNW WITH THE UKMO SLOWER AND DEEPER WITH THIS FEATURE
TUE AND WED. COLD FRONT PUSHES THROUGH NORTHERN NV TUESDAY AND SAGS
SOUTH TO CENTRAL UT AND SOUTHERN NV WEDNESDAY. THIS WILL CREATE
BREEZY TO WINDY CONDITIONS TUESDAY AND ESPECIALLY WED WITH TIGHT
GRADIENT ACROSS AREA. A FEW SHOWERS MAY BRUSH THE OREGON/NEVADA
BORDER. BY THUR FRONT SINKS FURTHER SOUTH AND WEAKENS WITH SOME
MODERATION IN TEMPERATURES BY FRIDAY. EXPECT TEMPERATURES TO DROP 10
TO 15 DEGREES TUESDAY ACROSS REGION...ESPECIALLY LASSEN AND NORTHERN
WASHOE...FROM THIS WEEKENDS HIGHS WITH SOME MODERATION FRIDAY. JAH

&&

.REV WATCHES/WARNINGS/ADVISORIES...
.NV...NONE.
.CA...NONE.
&&

Severe Thunderstorm Warnings in Nevada, 2004Every severe thunderstorm warning in 2004

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.