Wednesday, March 21, 2018



Today’s Forecast for Crestline, Twin Peaks, Lake Arrowhead and the San Bernardino Mountains:
Good Morning.
Rain is moving onshore to our North this morning around the Santa Barbara area. A Ridge of High pressure over SoCal continues to act as a buffer to the approaching system, keeping the rain from moving this way. It looks like things will finally begin to change this afternoon as a Low pressure system further North, slowly drops South, and forces a change.
Rain should begin to move into the area by this afternoon with increasing showers tonight through Thursday. The Atmospheric River is still pushing lots of moisture toward SoCal. Whether or not we will see the benefit from this, or how much, is now somewhat uncertain. The NWS is still pushing for heavy rain Thursday with rainfall amounts from 5-10″ in the local mountains. The GFS and NAM forecast models are showing from 1-3″ of rain for our area.
So there you go. It still looks like the bulk of the rain will arrive tonight with heavy rain a possibility at times Thursday, so I would suggest preparing for that. The main problem here is that the area of Low pressure off of SoCal is a cut off Low. The AR is in place as forecast, but the movement of the Cut Off Low has been as it always is, tricky to forecast its movement. Now that there is another guiding area of Low pressure that is not, a Cut Off Low, things should get moving.
So I would look for showers later today to intensify overnight, and Thursday. Most of the rain should be over by early Friday morning. Rainfall amounts will be greatest along the Rim from this storm. As you get away from the Rim, rainfall amounts will be generally less.
There is still a FLASH FLOOD WATCH for our area through Friday early AM. So if you are in an area that is prone to flooding or near a creek, be aware of your surroundings through this next 36-48 hours.
Fog and gusty winds will develop as the system moves closer to the area. I would expect to see fog along the Rim by late this afternoon so plan a little extra time if you are traveling around the mountain.
The snow level will remain above the 8000′ level for most if not all of this system as this is a Tropical air mass. Enjoy the Spring Weather. RC
Temperatures around the area for Today and overnight:
Crestline, Twin Peaks, and Lake Arrowhead: 49-54*/42-48*
Running Springs, GVL, and Big Bear: 50-54*/36-42*
San Bernardino: 70-74*/52-55*
That’s it for now, have a good day, and thanks for joining me @ RC


If you click on the green Station name, it will take you to that WX/Station

LAKE GREGORY———61/45….Elev..4617’…0.00RAIN*

VLY OF THE MOON—–65/43….Elev. .4974’…0.00″RAIN*

SKYLAND DR.————-61/47….Elev 5036’….0.00″ RAIN*

CDR/PINES/PRK———56/45….Elev  5784’….0.00″ RAIN*

TWIN PEAKS————–57/41….Elev 5514’……0.00″RAIN*

RIM FOREST————–55/44….Elev 5768’….0.00″ RAIN*

CEDAR RIDGE————54/45….Elev 5580’…0.00″ RAIN

N.GRASS VLY RD——–63/45…Elev 5489’…..0.00″RAIN*

ROCK CAMP F/ST.——-64/47…Elevation….4920′

SKYFOREST—————52/44…Elev 5863’…..0.00″ RAIN*

RUNNING SPRINGS—–51/42…Elev 6283’…..0.00″ RAIN*

GREEN VALLEY LAKE–60/38…Elev 6925’…..0.00″ RAIN*

BIG BEAR/-SHAY/MDW-55/40..Elev 6781’……0.00″ RAIN*

SAN BERNARDINO——-77/55..Elev 1278’……0.00″ RAIN*

WATERMAN CANYON—64/51..Elev  3208′ ….0.00″ RAIN*




This years rainfall total is at  15.38″ so far at my location.

The Rainfall year starts on July 01, and ends on June 30th.

Rainfall amounts from the latest storm were 0.87″.

Snow measured at my location was 0.00″.

Season snow total at my location : 2.25″

Last years season (2016-2017) rainfall total was, 45.90″ including melted snow moisture at my location.

The Total for the 2015-2016 Rainfall Year, was 32.38″ at my location on the South side of Lake Gregory.
Normal for the Crestline area is around ~40.00″.

A Big Thank you, to all of you who have contributed to the costs of maintaining this website.  I really appreciate your support.

Ron Chalfant

If you are interested in learning more about the weather and how it works, at 6pm local time, Tim Vasquez has a 30-40 minute broadcast on YouTube videos that you can learn some of the details in weather forecasting. LINK:  Tim Vasquez. He also has written several books that are worth reading if you are interested in Weather, that can be found on Amazon.

Thank You, for visiting this Website. IF YOU LIKE THIS WEBSITE, PLEASE SHARE IT WITH YOUR FRIENDS, AND OR ADD A LINK TO YOUR WEBSITE, ( ). Donations can be made to help with the on going costs of maintaining this website and its equipment by clicking on the DONATE BUTTON at the top of this page.

Be sure to check the WEBCAM PAGE for visible weather conditions around our local area.
LAKE GREGORY  is open every day for Fishing and Boat Rentals.(click on the link)

For local dispatch information WWW.SOCALMOUNTAINS.COM

For California Fire info

*RC. The information on this site is determined from many sources and is the most probable solution for our local area.
Weather is a dynamic force and can change in a brief period of time.

Click the refresh button below to reload this page.