West Coast Ridge weakening this week leading to more seasonal temps through Thursday…..Strong for July upper trof will move through the pacific NW bringing cooler weather….Gusty Winds and Critical Fire weather Saturday……
Wednesday July 6, 2016
Posted at 5:14 pm by Howard
History in the making….Top of Mammoth Mt gusts to 103MPH this morning at 5:00AM….Still gusting to 98MPH……Chatted with lead forecaster at RENO this AM…..This July trof is the strongest for this time of the year “ever recorded”. Standard deviation from normal is off the chart….
Weather conditions have been spectacular the past couple of days with seasonal temps and light afternoon breezes. Highs have been running in the mid to upper 70s with lows in the upper 40s. This will begin to change Friday as an seasonably cool trof for this time of the year moves into the pacific NW sending high temps in Mammoth down into the upper 60s by Sunday with moderate gusty winds Friday into Saturday. Night time lows will drop into the 30s in the high country, and low to mid 30s in some of the colder locations, If you are planning on back country travel this weekend, plan accordingly.
Ridge top gusts are expected to be in the 50-70 MPH range with the chilly temps Saturday night. Winds in town could gust 30 to 40mph Saturday morning through Saturday. This is a dry pattern so no precipitation is expected in Mono County. The upper trof is progressive and so ridging will build back in, with seasonal temps returning by Wednesday.
As mentioned in the last discussion, this pattern will make it very difficult for any monsoon moisture or dynamics to move up from the south or southeast. It may be that it will continue drier then normal until the period between the 17th and 20th when monsoon moisture and dynamics make a return.
FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING
THROUGH SATURDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR
MONO AND EASTERN ALPINE COUNTIES AND MINERAL AND SOUTHERN LYON
* AFFECTED AREA…FIRE ZONE 273 MONO AND EASTERN ALPINE COUNTIES
AND FIRE ZONE 459 MINERAL AND SOUTHERN LYON COUNTIES.
* WINDS SATURDAY…INCREASING WEST 15 TO 25 MPH WITH GUSTS 35 TO
* HUMIDITY SATURDAY…8 TO 15% INCREASING TO AROUND 20% LATER IN
* IMPACTS…THE COMBINATION OF GUSTY WINDS AND LOW HUMIDITY CAN
CAUSE FIRE TO RAPIDLY GROW IN SIZE AND INTENSITY BEFORE FIRST
RESPONDERS CAN CONTAIN THEM.
AVOID OUTDOOR ACTIVITIES THAT CAN CAUSE A SPARK NEAR DRY
VEGETATION… SUCH AS YARD WORK… TARGET SHOOTING… OR
CAMPFIRES. FOLLOW LOCAL FIRE RESTRICTIONS. CHECK WEATHER.GOV/RENO