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?
Moisture from Pacific Tropical Storm Norbert and monsoonal
moisture will combine to produce showers and thunderstorms over parts of
the Southwest/Southern California/Great Basin and into parts of the
Southern/Central Rockies through Tuesday.
BULLETIN – EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN DIEGO CA
109 PM PDT SUN SEP 7 2014
THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A
* FLASH FLOOD WARNING FOR…
NORTHWESTERN RIVERSIDE COUNTY IN SOUTHERN CALIFORNIA…
THIS INCLUDES THE CITIES OF…RIVERSIDE…MORENO VALLEY…
SOUTHWESTERN SAN BERNARDINO COUNTY IN SOUTHERN CALIFORNIA…
THIS INCLUDES THE CITIES OF…SAN BERNARDINO…RIALTO…REDLANDS…
* UNTIL 415 PM PDT
* AT 100 PM PDT…NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS NEAR RIVERSIDE AND SAN BERNARDINO WHICH WILL LIKELY
PRODUCE FLASH FLOODING. THE THUNDERSTORMS WERE NEARLY STATIONARY.
INTERSTATES 10 AND 215 MAY BE IMPACTED.
* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
RUNNING SPRINGS…RUBIDOUX…PEDLEY…MUSCOY…LOMA LINDA…
HIGHLAND…CRESTLINE…COLTON AND BLOOMINGTON.
MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE…TURN AROUND…DONT DROWN.
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.
Noaa has issued this message about the current status of Tropical Storm Juliette. It is also expected to bring showers to parts of Southern California by Friday Evening and Early Saturday.
THE NATIONAL HURRICANE CENTER IS ISSUING ADVISORIES ON NEWLY FORMED
TROPICAL STORM JULIETTE…WHICH IS APPROACHING CABO SAN LUCAS ON
THE SOUTHERN TIP OF THE BAJA CALIFORNIA PENINSULA.
1. A BROAD AREA OF LOW PRESSURE IS LOCATED ABOUT 800 MILES SOUTH-
SOUTHWEST OF THE SOUTHERN TIP OF THE BAJA CALIFORNIA PENINSULA.
DEVELOPMENT…IF ANY…OF THIS SYSTEM IS EXPECTED TO BE SLOW TO
OCCUR DURING THE NEXT COUPLE OF DAYS WHILE IT MOVES NORTHEASTWARD
OR NORTH-NORTHEASTWARD AT ABOUT 10 MPH. THIS SYSTEM HAS A LOW
CHANCE…10 PERCENT…OF BECOMING A TROPICAL CYCLONE DURING THE
NEXT 48 HOURS. THIS SYSTEM IS FORECAST TO REACH COOLER WATERS IN
TWO TO THREE DAYS AND SIGNIFICANT DEVELOPMENT AFTER THAT TIME IS
NOT EXPECTED. THIS SYSTEM HAS A LOW CHANCE…20 PERCENT… OF
BECOMING A TROPICAL CYCLONE DURING THE NEXT 5 DAYS.
2. SHOWER ACTIVITY ASSOCIATED WITH AN AREA OF LOW PRESSURE LOCATED
ABOUT 1500 MILES WEST-SOUTHWEST OF THE SOUTHERN TIP OF THE BAJA
CALIFORNIA PENINSULA HAS BECOME A LITTLE BETTER ORGANIZED.
CONDITIONS ARE MARGINALLY FAVORABLE FOR ADDITIONAL DEVELOPMENT OF
THIS SYSTEM DURING THE NEXT FEW DAYS. THIS DISTURBANCE HAS A LOW
CHANCE…20 PERCENT…OF BECOMING A TROPICAL CYCLONE DURING THE
NEXT 48 HOURS…AND A MEDIUM CHANCE…30 PERCENT…OF BECOMING A
TROPICAL CYCLONE DURING THE NEXT 5 DAYS.
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.