Severe Thunderstorm Warning 11, NWS San Diego, CA

364 
WWUS56 KSGX 152254 RRA
SVSSGX

Severe Weather Statement
National Weather Service San Diego CA
354 PM PDT WED AUG 15 2018

CAC073-152345-
/O.CON.KSGX.SV.W.0011.000000T0000Z-180815T2345Z/
San Diego CA-
354 PM PDT WED AUG 15 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM PDT
FOR SOUTHEASTERN SAN DIEGO COUNTY...

At 347 PM PDT, a severe thunderstorm was located just south of Pine 
Valley extending to near Campo, and was moving east at about 5 mph. 

HAZARD...60 mph wind gusts. 

SOURCE...Radar indicated. 

IMPACT...Expect damage to roofs, siding, and trees. 

Locations impacted include...
I-8 Between Pine Valley And Boulevard, I-8 Between Boulevard And
Imperial County Line, Campo, Hwy S2 Between Canebrake And Imperial
County Line, Boulevard, Lake Morena, Tierra Del Sol, Campo Indian
Reservation, La Posta Indian Reservation, Live Oak Springs, Jacumba
and Manzanita Indian Reservation.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Severe thunderstorms can produce damaging winds, destructive hail, 
deadly lightning and very heavy rain. For your protection, move to 
an interior room on the lowest floor of a structure. Heavy rains 
flood roads quickly so do not drive into areas where water covers 
the road.

&&

LAT...LON 3280 11648 3285 11611 3262 11611 3259 11650
TIME...MOT...LOC 2237Z 240DEG 49KT 3280 11611 

HAIL...<.75IN
WIND...60MPH
 
$$

Small

212 
WWUS56 KSGX 152344
SVSSGX

Severe Weather Statement
National Weather Service San Diego CA
444 PM PDT WED AUG 15 2018

CAC073-152348-
/O.EXP.KSGX.SV.W.0011.000000T0000Z-180815T2345Z/
San Diego CA-
444 PM PDT WED AUG 15 2018

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN SAN DIEGO COUNTY
WILL EXPIRE AT 445 PM PDT...
    
The severe thunderstorm is moving out of the warned area so the 
warning will be allowed to expire. 

LAT...LON 3280 11648 3285 11611 3262 11611 3259 11650
TIME...MOT...LOC 2338Z 240DEG 49KT 3316 11537 

$$

Small

Area Forecast Discussion
National Weather Service San Diego CA
127 PM PDT Wed Aug 15 2018

.SYNOPSIS...
Monsoonal moisture will increase through Thursday with increasing
chances for afternoon and early evening thunderstorms in the
mountains and deserts. High pressure aloft will move westward and
over Southern California for Friday through Sunday bringing drying
and a warming trend. Minor intrusions of monsoonal moisture may
return next week as high pressure moves back to the east. Areas
of night and morning low clouds and fog will continue for coastal
areas.

&&

.DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE...
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...

Coastal low clouds cleared later today and not completely from San
Diego. Thunderstorms are getting going, starting over the
mountain crests. A few of these could get nasty before the day is
done, but will stay mostly confined to the mountains. A little
more moisture Thursday in easterly flow will combine with the
high instability already present to bring more thunderstorms to
the mountains and deserts, and even could help a couple
thunderstorms drift west of the mountains into inland valleys.
The tenacious nature of the coastal clouds and model guidance
suggest the marine layer to be largely unfazed by this latest
monsoon push, and maintains night and morning coastal clouds
getting into westernmost valleys each night. The monsoon flow
backs off on Friday for fewer thunderstorms in the mountains and
deserts. High pressure aloft strengthens a bit this weekend while
the monsoon flow backs off. That will mean higher temperatures
and a shallower marine layer, but no thunderstorms. Next week
models show some increase in monsoonal moisture, but not very
convincing to forecast much chance of thunderstorms until Tuesday
and Wednesday. The high breaks down slightly as well, so it
doesn't appear as hot but probably more humid. Overall, minor ebbs
and flows in monsoon flow, slight variations in marine layer and
coastal cloud extent, and minor fluctuations in temperatures. In
other words, seasonal summer weather.

&&

.AVIATION...
151900Z...Coasts/Valleys...SCT-BKN15-020 near the coast this
afternoon becoming OVC015-020 through 04Z and moving 20 miles inland
through 16Z Thursday. From 16-21Z...gradual clearing back to the
coast.

Mountains/Deserts...Scattered TSRA over the mountains between 20-03Z
with some storms moving into the upper deserts near Victorville and
Barstow. Reduced vis in heavy rain, and gusty sfc winds 30-40 kt
near storms.

&&

.MARINE...
No hazardous marine weather is expected through Sunday.

&&

.BEACHES...
Beach Hazard Statement through Friday for above average surf and
strong rip currents. A southern hemisphere 180 degree, 4 ft swell at
17 seconds will arrive this evening and bring elevated surf and
strong rip currents tonight through Friday. The surf will peak
Friday at 3-6 ft with sets to 8 ft on southwest facing beaches, then
slowly subside Saturday and Sunday.

The surf and swell will peak Friday, then slowly decrease Saturday
and Sunday.

&&

.SKYWARN...
Skywarn activation is not requested. However weather spotters are
encouraged to report significant weather conditions.

&&

.SGX WATCHES/WARNINGS/ADVISORIES...
CA...Beach Hazards Statement from 9 PM PDT this evening through
     Friday evening for Orange County Coastal Areas-San Diego
     County Coastal Areas.

PZ...NONE.

&&

PUBLIC...MM
AVIATION/MARINE/BEACHES...Moede