March 11: Black Rock playa conditions: \"moist\" (snowed wednesday morning) High Rock Canyon is now closed to vehicles (February 1st, until early May.) Expect temperature to drop at night, and make sure to pack extra coats and blankets if you are traveling through sparse areas. Beware of carbon monoxide poisoning from running the heat in a standing car for too long, or from propane appliances. Call Friends for up-to-date information. We are located right off the Playa and are in touch with whats going on out here. 775.557.2900 info@blackrockdesert.org MODIS imagery viewer Gerlach Monthly Climate Summary 1/1948 thru 4/2007 BM Gerlach: station: temp, wind, barometer, DW1623 Bryan Dongray's Weather at Gerlach Weather Underground: Gerlach National Weather Service: Gerlach, Vya, Truckee, soaring National Weather Service radar: Reno University of Utah MesoWest: Surface Weather Map Road Conditions: Nevada (map), CalTrans, Oregon Black Rock Desert "Clear Sky Chart": link Satellite: visible, infrared, watervapor, westpac Earthquake: UNR helicorder, NBE; USGS map Sunrise/Sunset: pdf looking south-east from Hualapai Valley (refresh / animate)

NWS   refresh / animate wiki    refresh  /  animate January 2010:   01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 February 2010:   01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 March 2010:   01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 Handy Links Playa Wiki Playa hazards

 Area Forecast Discussion (glossary)
 
 FXUS65 KREV 152158
 AFDREV
 
 AREA FORECAST DISCUSSION
 NATIONAL WEATHER SERVICE RENO NV
 258 PM PDT MON MAR 15 2010
 
 .SHORT TERM...
 UPPER RIDGE TO REMAIN OVERHEAD TOMORROW WITH COOL MORNING
 TEMPERATURES AND WARM AFTERNOON HIGHS. MOST NEVADA VALLEYS WILL
 REACH THE MID TO UPPER 60S WITH A FEW LOCATIONS REACHING THE LOW
 70S. HIGHS IN THE SIERRA WILL REACH THE 50S TO LOW 60S...WITH
 MOUNTAIN TOP TEMPERATURES IN THE 40S.
 
 LOW NEAR 40N 140W WILL TRACK NORTHEAST AND REACH THE PACIFIC
 NORTHWEST COAST TUESDAY AFTERNOON. THE LOW WILL INCREASE WINDS
 OVER THE NORTHERN SIERRA AND NORTHWEST NEVADA TUESDAY
 AFTERNOON...BUT LARGELY HAVE NO IMPACT ON THE AREA.  
 
 BY WEDNESDAY AND THURSDAY A SHARP RIDGE DEVELOPS ALONG THE WEST
 COAST OPENING THE GREAT BASIN TO A COLD NORTH FLOW FROM CANADA.
 MODELS REMAIN UNCERTAIN IN THE POSITION OF THE RIDGE WHICH COULD
 HAVE A LARGE EFFECT ON TEMPERATURES FOR MID WEEK.
 
 FOR WEDNESDAY THERE IS GOOD AGREEMENT A COLD FRONT WILL DROP SOUTH
 INTO THE AREA. INSTABILITY INCREASES ALONG THE FRONT WITH A BIT OF
 COOLING ALOFT. THIS COULD BRING SHOWERS TO THE AREA WEDNESDAY
 AFTERNOON THROUGH THURSDAY MORNING DEPENDING ON THE AMOUNT OF
 MOISTURE ALONG THE FRONT. 
 
 BEHIND THE FRONT A DRY AND COOL NORTH WIND WILL BRING 5-10
 DEGREES OF COOLING...PERHAPS MORE...TO THE AREA FOR THURSDAY. IF
 THE RIDGE REMAINS NEAR 130W A LARGER AMOUNT OF COLD CANADIAN AIR
 COULD SPILL INTO WESTERN NEVADA AND LOWER TEMPERATURES AN
 ADDITIONAL 5-10 DEGREES BELOW THE FORECAST HIGHS. BRONG
 
 .LONG TERM...FRIDAY THROUGH MONDAY...
 WHILE DRY WEATHER IS LIKELY TO PREVAIL THRU NEXT WEEKEND...SOME 
 UNCERTAINTY HAS ARISEN ON TEMPS AND WIND SPEEDS FOR FRIDAY. GFS 
 INDICATED SECONDARY SHORTWAVE DIGGING SOUTH ACROSS THE GREAT BASIN 
 ON FRIDAY WITH 700 MB TEMPS LOWERING TO -4 TO -8 DEGREES C ACROSS 
 NWRN AND W-CNTRL NV...PUSHING THE MAIN RIDGE OFF THE WEST COAST. THE 
 ECMWF ALSO TRENDED WEST WITH THE LONGWAVE PATTERN FROM ITS PREV 
 RUN...BUT NOT AS FAR WEST AS THE GFS. THE CURRENT FORECAST LEANS 
 MORE TOWARD THE MODERATE ECMWF SCENARIO. THE SPREAD WITH THE TROF 
 LOCATION AMONG THE GEFS ENSEMBLE DATA IS RATHER HIGH SO CONFIDENCE 
 IN THE FORECAST TEMPS AND WINDS IS BELOW AVERAGE. IF THE GFS 
 VERIFIES THE MAX TEMPS WOULD BE SEVERAL DEGREES COOLER WITH 
 INCREASED WINDS FROM THE NORTH ESPECIALLY OVER THE RIDGES.  
 
 FOR NEXT WEEKEND...BETTER AGREEMENT IS INDICATED BY GUIDANCE DATA 
 FOR RIDGE MOVING EAST ACROSS THE GREAT BASIN...ALTHOUGH THE GFS IS 
 SLOWER WITH THIS PROGRESSION ON SATURDAY. THE MAJORITY OF GUIDANCE 
 SOURCES PLACE THE RIDGE AXIS OVER WRN OR CNTRL NV BY SAT...THEN OVER 
 THE ERN GREAT BASIN BY SUNDAY. THIS WOULD ALLOW TEMPS BOTH DAYS TO 
 BE ABOUT 10 DEGREES ABOVE NORMAL WITH MID-UPR 60S IN LOWER 
 ELEVATIONS. SOME LATE DAY ZEPHYR TYPE WINDS MAY OCCUR IN FAR WRN NV 
 ON SUNDAY AND PRODUCE IMPROVED MIXING...ALTHOUGH RIDGE TEMPS WOULD 
 DECREASE A BIT COMPARED TO SATURDAY.   
 
 BY NEXT MONDAY...BOTH THE GFS AND ECMWF SWING A TROF ACROSS THE NWRN 
 US WITH POTENTIAL WINDY DAY FOR MUCH OF ERN CA-WRN NV. ENSEMBLE GEFS 
 MODEL SPREAD AGAIN INCREASES OVER THE NWRN US ON MONDAY SO THE 
 AMOUNT OF COOLING AND EXTENT OF PRECIP POTENTIAL IS UNCERTAIN AT 
 THIS TIME. IN GENERAL...THE WEST FLOW ALOFT IS LIKELY TO BE STRONGER 
 WITH THE RIDGE BEING FLATTENED SO TEMPS WILL BE LOWERED BY ABOUT 10 
 DEGREES WITH INCREASED WINDS ON MONDAY. MOST PRECIP IS LIKELY TO 
 STAY NORTH OF THE OREGON BORDER...BUT A FEW LIGHT SHOWERS MAY 
 DEVELOP AHEAD OF THE TROF PASSAGE IN NERN CA-NWRN NV AND INTO THE 
 LAKE TAHOE VICINITY MONDAY OR MON NGT. MJD
 
 .AVIATION...
 VFR WITH LIGHT WINDS THRU TUESDAY. FOR KTRK...BRIEF REDUCTION IN 
 VSBY FROM LOCAL SHALLOW FOG POSSIBLE BTWN 09Z-12Z AGAIN BUT 
 PROBABILITY OF VSBY OR CIGS BELOW INSTRUMENT LANDING MINS ONLY ABOUT 
 10 PERCENT. MJD  
 
 
 .REV WATCHES/WARNINGS/ADVISORIES...
 NV...NONE.
 CA...NONE.