Alert archive / California / Winter Storm Warnings in 2006

Winter Storm Warning 12, NWS Reno, NV

March 24, 2006Douglas County, Washoe County, Nevada; 4 counties in California

NWS Reno, NV issued this winter storm warning at Mar 24, 2006, 10:51 AM PST for Douglas County, Washoe County, Nevada; 4 counties in California. It took effect at Mar 25, 2006, 1:00 AM PST. It was in force for 12 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Mar 24, 2006, 10:51 AM PST (18:51 UTC)
In effect from
Mar 25, 2006, 1:00 AM PST
Expired
Mar 25, 2006, 1:00 PM PST
In force
12 hr
Issued by
NWS Reno, NV

Counties Alpine County, CA, El Dorado County, CA, Nevada County, CA, Placer County, CA, Douglas County, NV, Washoe County, NV

The radar

The Reno radar (KRGX), 86 km from the middle of the area, began a volume at 18:56 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, 6.9 hours before the alert went out and 175 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-pSkew-T log-p diagram, Reno, NV at 12:00Z on 2006-03-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Reno, NV at 12:00Z on 2006-03-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 86 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
1890 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
86 m²/s²
0-3 km storm-relative helicity
353 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this winter storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Reno, NV wrote its last area forecast discussion before this winter storm warning went out at Mar 24, 3:30 AM PST, 7 hours 21 minutes earlier.

Area forecast discussion, Mar 24, 3:30 AM PST, 7 hours 21 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE RENO NV
330 AM PST FRI MAR 24 2006

.SHORT TERM...
UPPER RIDGE HAS MOVED OVER THE ROCKIES WHILE INITIAL WAVE ASSOCIATED
WITH THE DEEP GULF OF ALASKA LOW IS CURRENTLY MOVING INTO THE PACNW.
BAND OF PRECIPITATION ASSOCIATED WITH THIS WAVE CURRENTLY BANKING UP
ALONG THE NRN SIERRA WITH NUMEROUS SHOWERS BEHIND IT OVER NRN
CALIFORNIA. MOIST SWLY FLOW COMBINED WITH WEAK WAA TODAY WILL BRING
PERIODS OF LIGHT RAIN OR SNOW ALONG THE SIERRA FROM TAHOE NORTH WITH
SOME MAINLY VIRGA SHOWERS JUST EAST OF THE CREST. WINDS WILL BE AN
ISSUE TODAY AS GRADIENTS TIGHTEN OVER NRN CALIFORNIA. MOUNTAIN TOP
SENSORS ARE ALREADY GUSTING AROUND 70 MPH AND MOST VALLEY LOCATIONS
HAVE STAYED BREEZY OVERNIGHT. WINDS WILL INCREASE BY LATE THIS
MORNING WARMING THE LEESIDE VALLEYS TO TEMPERATURES RIGHT AROUND
YESTERDAYS READINGS.

THE MAIN UPPER TROUGH MOVES INTO CALIFORNIA AROUND MIDNIGHT TONIGHT
CAUSING MODERATE TO HEAVY PRECIP IN THE CENTRAL AND NRN SIERRA. SNOW
LEVELS START OUT NEAR 7000 FEET AND DROP BELOW 6000 FEET BY LATE
SATURDAY MORNING AS THE COLD FRONT MOVES THROUGH. LATEST MODEL RUNS
HAVE BEEN SLIGHTLY SLOWER WITH THE FRONT...GENERATE LESS QPF...AND
HAVE STRONGER WINDS AHEAD OF IT. IF THIS SCENARIO PLAYS OUT...WOULD
MOST LIKELY ONLY SEE ADVISORY LEVEL SNOWS IN THE SIERRA AND POSSIBLY
HIGH WIND CRITERIA IN THE LEESIDE VALLEYS SATURDAY MORNING. WITH
THIS UNCERTAINTY...WILL LET THE DAY SHIFT LOOK AT 12Z MODELS AND
DECIDE ON ADVISORY OR WARNING FOR THE SIERRA AND POSSIBLE HIGH WIND
WATCH FOR WRN NEVADA VALLEYS.

PRECIP ENDS RATHER QUICKLY SATURDAY EVENING AS RIDGING MOVES INTO
THE WEST COAST PUSHING THE DISTURBANCE EAST OF THE AREA. RIDGE
BUILDS SUNDAY WITH TEMPERATURES TRYING TO GET BACK TO NORMAL VALUES.
CLOUDS BEGIN TO INCREASE SUNDAY NIGHT AHEAD OF THE NEXT PACIFIC
SYSTEM. JORDAN
&&

.LONG TERM...MONDAY THROUGH THURSDAY...
UPPER TROUGH APPROACHES THE WEST COAST MONDAY WITH INCREASING CLOUDS
OVER THE AREA ALONG WITH GUSTY SOUTH WINDS. HIGHS MONDAY WILL REACH
UPPER 50S TO LOWER 60S OVER WESTERN NV VALLEYS ALTHOUGH CLOUDS AND
WIND WILL MAKE IT FEEL A BIT COOLER THAN THAT. PRECIPITATION SPREADS
ACROSS NORTHERN CA AND WESTERN EXTREME WESTERN NV MONDAY
NIGHT...THEN ACROSS THE ENTIRE CWA ON TUESDAY AS THE UPPER TROUGH
MOVES INLAND. THIS TROUGH SPLITS AS IT MOVES INLAND BUT SHOULD STILL
BE STRONG ENOUGH TO BRING A GOOD SHOT OF SNOW TO THE SIERRA AND SOME
RAIN OR SNOW SHOWERS TO THE WESTERN NV VALLEYS. THE GFS MOVES THE
TROUGH EAST OF THE AREA ON WEDNESDAY WITH A FLAT RIDGE IN PLACE ON
THURSDAY. MOST OF THE 00Z GFS ENSEMBLE CHARTS SHOW RIDGING OF
VARYING DEGREES ALONG THE WEST COAST THURSDAY...ALTHOUGH A MINORITY
HINT AT A WEAK TROUGH MOVING ACROSS THE CWA...AN IDEA SUPPORTED BY
THE ECMWF AND CANADIAN MODELS. WILL LEAVE PRECIP OUT OF FORECAST FOR
NOW AND SEE IF LATER RUNS CAN SHOW BETTER AGREEMENT. RC
&&

.AVIATION...
VFR. SCATTERED SHOWERS TO MOVE ACROSS NORTHERN CA TODAY AND EXTEND
NORTH INTO SOUTHERN OREGON. PRECIPITATION WILL INCREASE TONIGHT WITH
LOCAL MVFR CONDITIONS DEVELOPING AFT 06Z.
&&

.REV WATCHES/WARNINGS/ADVISORIES...
NV...WINTER STORM WATCH FRI NGT THRU SAT MORNING NVZ002
CA...WINTER STORM WATCH FRI NGT THRU SAT MORNING CAZ072
&&
Hazardous weather outlook, Mar 24, 6:00 AM PST, 4 hours 51 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Mar 24, 11:03 AM PSTWind AdvisoryREVChurchill, Douglas, Lyon, Mineral, Pershing, Storey and 1 more33 hr

Nearby

Winter Storm Warnings in California, 2006Winter Storm Warnings in Nevada, 2006Every winter storm warning in 2006

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.