It is predicted to be cold and wet on the days leading into Christmas but clearing up on Christmas day. For those of you hoping for a white Christmas, the mountains are expected to receive snow in the nights before. There could be 1-3 inches of snow as low as 3000-3500 feet and the possibility of a foot of snow above 6000 feet.
Snow has fallen overnight in the local San Bernardino mountains and has led to chain control restrictions early Monday morning.Motorists hoping to make it up to the Big Bear Mountain resorts will have to bring snow chains, according to the
Possibility of lightning, thunderstorms and heavy rain
Flash-flood warnings were issued for the Antelope Valley and parts of San Bernardino and Riverside counties Wednesday afternoon, amid an extended period of high temperatures and increased humidity.
The thunderstorms are most likely to develop in mountain, inland valley and desert areas, but coastal areas might see them as well.
Source: What are El Niño and La Niña?
Areas in-and-around Philly, PA… though this flooding threat is for much of PA, MD, VA, DE and parts of NJ.
Rain, rain and some more rain… yup, beginning tonight and into tomorrow, expect a good deal of rain… mainly tomorrow. FLASH FLOODING is a good possibility and remember DO NOT DRIVE THROUGH FLOOD WATERS…. flooded roadways WILL OCCUR tomorrow, so don’t be a moron. Expect rain to begin mid morning and last through late afternoon/early evening, heavy at times.
(P.S. If you do get stuck trying to drive through flooded roads, I will make an effort to personally come out there, and backhand you across the face.)
The sun continues to be fairly quiet. A few sunspots visible on the solar disk, but nothing to serious looking. Flare probability forecast:
Solar winds are tranquil, but may see slight enhancement over the next 2 hours due to a recurrent positive-polarity coronal hole high speed stream (CH HSS), but nothing to crazy. Expecting the Kp-index to remain at or below 3. Aurora probability remains low for tonight. Areas in northern Canada and Alaska have the best shot of seeing anything.
It looks like more rain may be on the way for Southern California, as we have a 60% Chance another Tropical Storm is forming just South of Mexico.
NOAA NHC Message
THIS SYSTEM HAS A HIGH CHANCE…60 PERCENT…OF
BECOMING A TROPICAL CYCLONE DURING THE NEXT 48 HOURS…AND A HIGH
CHANCE…80 PERCENT… OF BECOMING A TROPICAL CYCLONE DURING THE
NEXT 5 DAYS WHILE IT MOVES WEST-NORTHWESTWARD AT 15 MPH. LOCALLY
HEAVY RAINFALL IS EXPECTED TO CONTINUE OVER PORTIONS OF SOUTHERN
MEXICO DURING THE NEXT FEW DAYS IN ASSOCIATION WITH THE LOW…AND
INTERESTS IN THAT AREA SHOULD MONITOR THE PROGRESS OF THIS SYSTEM.
We have an area of Low pressure to our South and another High pressure west of Central California.
Expected the High and Low pressure convergence to possibly generate more thunder storms and flash flooding to Western States thru Sunday.
LIGHT TO MODERATE SHOWERS ARE EXPECTED TO CONTINUE BEYOND 5 PM.
AT 330 PM AN AREA OF SHOWERS EXTENDED FROM NEAR CAMPO…NORTH TO
THE LUCERNE VALLEY AREA. THERE WERE ALSO MODERATE SHOWERS BETWEEN
ONTARIO AND WRIGHTWOOD. THE SHOWERS WERE MOVING NORTH AT ABOUT 20
MPH. RAINFALL AMOUNTS OF UP TO 0.05 INCHES PER HOUR CAN BE
EXPECTED FROM THE HEAVIEST SHOWERS.
MONSOONAL MOISTURE AND MOISTURE FROM THE REMNANTS OF TROPICAL
STORM IVO WILL CONTINUE TO INCREASE TODAY AND SPREAD SLIGHTLY
FARTHER WEST INTO PORTIONS OF THE INLAND VALLEYS. IT IS POSSIBLE
THAT CLOUD COVER COULD MAKE FOR A LITTLE LESS THUNDERSTORM
ACTIVITY THIS AFTERNOON…BUT IF THUNDERSTORMS DO FORM…HEAVY
RAINFALL AND FLASH FLOODING ARE LIKELY…ESPECIALLY IN THE
MOUNTAINS AND DESERTS WITH ISOLATED FLASH FLOODING IN THE INLAND
VALLEYS. THERE SHOULD BE BETTER SURFACE HEATING TOMORROW…AND SO
ANOTHER ROUND OF WIDESPREAD THUNDERSTORMS AND HEAVY SHOWERS IS
LIKELY TUESDAY AFTERNOON THROUGH EARLY EVENING IN THE MOUNTAINS
AND DESERTS…SO THE FLASH FLOOD WATCH WAS EXTENDED THROUGH
TUESDAY EVENING FOR THOSE AREAS. HEAVY RAINFALL IN BURN AREAS OF
THE PAST 2 YEARS WILL LIKELY LEAD TO MUD AND DEBRIS FLOWS NEAR
AND BELOW THOSE BURN AREAS. ISOLATED THUNDERSTORMS WITH LOCALLY
HEAVY RAINFALL ARE ALSO POSSIBLE THROUGH LATE TONIGHT THROUGH
EARLY TUESDAY MORNING DUE TO AN UPPER DISTURBANCE MOVING THROUGH.