SDG&E Weather Briefing

Friday, July 19, 2019

Safety Talking Point

Stay Safe From Falls

Falls represent a serious hazard. In 2015, falls at home resulted in 21,100 deaths, according the 2017 edition of “Injury Facts,” a National Safety Council chartbook. To help prevent falls both at home and at work, NSC offers several tips:

  • Ensure electrical and phone cords are secured away from high-traffic areas, such as hallways and in front of employees’ desks.
  • Always keep cabinets and drawers closed when not in use.
  • Wear proper footwear.
  • Clean up spills as soon as they occur, and post warning signs when necessary.
  • Avoid walking distracted.
  • Don’t carry large loads that obstruct your view.
  • Keep your home and office well-lit.

Executive Summary

  • Changes since this morning’s issuance: FPI updated to reflect new live fuel moisture readings in OC and updated storm discussion
  • Slight chance for isolated light showers Monday over the service territory
  • Fair weather today and tomorrow with morning clouds and afternoon sunshine
  • Warmer Sunday through next week with higher humidities in the backcountry
  • Chance for isolated afternoon/evening thunderstorms over mountains and deserts beginning Sunday, persisting most of the week (see forecast details)
  • The FPI will be Elevated inland and Normal for all coastal districts through the next seven days

Forecast Discussion

*** UPDATE ***

Monsoonal surge Monday will bring a slight chance for isolated showers over the service territory. If it does materialize, it won't be much, just a few sprinkles here and there. Thunderstorm activity Sunday through next week will depend heavily on what happens with storms to the southeast of us each day. Meteorology will monitor and provide updates as necessary, though at this time, impactful storms are not anticipated. 


*** Previous Discussion ***

Fair weather continues today and tomorrow with our typical morning clouds and afternoon sunshine. A surge of monsoonal moisture Sunday through next week will bring warmer temperatures and break up the marine layer a bit. Our lower clouds will stick closer to the coast, but burn off in the afternoon. Inland areas will see a mix of higher clouds that will bring a slight chance for isolated thunderstorms to the mountains and deserts in the afternoon and early evenings through most of the week. Thunderstorm potential will begin Sunday afternoon, though there doesn’t look like much chance for activity Sunday. The potential increases Monday afternoon, with Tuesday and Wednesday bringing the highest chance for a few isolated thunderstorms. Any thunderstorm that forms will have the possibility of creating locally gusty winds, heavy rainfall, and lightning. As these storms would be focused mainly over mountain ridges and deserts, the potential for impacts is low. That being said, a weather-related outage can not be ruled out in the mountain areas.

As far as temperatures go, we’ll warm up Sunday and be a little above seasonal averages for most of the week. Mountains and desert areas will have slightly higher humidities than they’re used to, but cloud cover will moderate their temperatures a bit. Inland valleys will probably feel the heat the most, but nothing significant is expected at this time. Areas near the coast will be warmer than this past week, but they’ll still have some of the ocean’s cooling to help them out. Overall- noticeably warmer next week, but nothing alarming.

Fire Discussion

The FPI will be Elevated inland and Normal for San Diego county coastal districts through the next seven days. Orange County will become Elevated on Tuesday as new live fuel moisture readings have indicated an uptick in fire potential. Fair weather will continue through tomorrow before a surge of monsoonal moisture brings warmer temperatures to the region. Humidities will increase over the mountains and deserts, bringing a slight chance for isolated afternoon/evening thunderstorms Sunday through next week. Grasses are dry and will ignite easily. Live fuel moistures throughout the service territory continue to decline but remain above seasonal average as well as their critical threshold. 

Today's Fire Potential Index (FPI)

ME RA EA NE OC NC BC CM
Elevated

13

Elevated

13

Elevated

12

Elevated

12

Normal

10

Normal

9

Normal

9

Normal

9

< 12 | Normal 12 - 14 | Elevated 15 - 17 | Extreme

7-Day FPI Outlook

  Fri
7/19
Sat
7/20
Sun
7/21
Mon
7/22
Tue
7/23
Wed
7/24
Thu
7/25
ME Elevated

13

Elevated

13

Elevated

13

Elevated

13

Elevated

13

Elevated

13

Elevated

13

RA Elevated

13

Elevated

13

Elevated

13

Elevated

13

Elevated

13

Elevated

13

Elevated

13

EA Elevated

12

Elevated

12

Elevated

12

Elevated

12

Elevated

12

Elevated

12

Elevated

12

NE Elevated

12

Elevated

12

Elevated

12

Elevated

12

Elevated

12

Elevated

12

Elevated

12

OC Normal

10

Normal

10

Normal

11

Normal

11

Elevated

12

Elevated

12

Elevated

12

NC Normal

9

Normal

9

Normal

10

Normal

10

Normal

10

Normal

10

Normal

10

BC Normal

9

Normal

9

Normal

10

Normal

10

Normal

10

Normal

10

Normal

10

CM Normal

9

Normal

9

Normal

10

Normal

10

Normal

10

Normal

10

Normal

10

Forecast Weather Legend

< 12 | Normal 12 - 14 | Elevated 15 - 17 | Extreme

Latest 7-Day Forecast

Fri
7/19
Sat
7/20
Sun
7/21
Mon
7/22
Tue
7/23
Wed
7/24
Thu
7/25
EXPECTED WEATHER CONDITIONS
sunny
sunny
sunny
partly cloudy
partly cloudy
partly cloudy
partly cloudy
BEACHES
64/73 63/74 63/74 65/75 66/77 66/77 68/77
MESAS
63/76 61/74 62/75 63/78 64/81 64/84 65/84
MIRAMAR
64/80 63/79 62/82 63/85 64/87 65/88 66/89
INLAND ORANGE COUNTY
62/78 61/80 61/84 63/86 63/91 63/91 65/88
INLAND VALLEY
61/83 60/82 61/85 62/88 63/91 65/92 66/91
FOOTHILLS
55/85 56/87 55/87 60/88 62/93 63/93 66/91
MOUNTAINS
58/78 58/79 62/85 65/84 65/86 67/85 67/84
DESERTS
73/106 74/108 76/109 76/107 78/109 79/108 81/109
BACKCOUNTRY WINDS
21 19 19 18 18 19 22
CHANCE OF PRECIPITATION
0% 0% 5% 10% 15% 20% 15%

Forecast Weather Legend

High Heat (above 95F) Illness Prevention measures are mandated by Safety Standard G 8366: Pre-shift meeting to review preventive, cool down, and communication measures; Shade & 1 quart of cool water per hour per crew member required. Supervisors to observe for employee heat illnesses, or use a buddy system or regular communication with sole employees. Shading indicates Heat Illness Prevention (heat wave at or above 80F) measures are mandated by Safety Standard G 8366: Shade & 1 quart of cool water per hour per crew member required. Supervisors to observe for employee heat illinesses.
Shading Indicates low temperatures in this region are expected to be at 40 degrees Fahrenheit or lower Shading Indicates low temperatures in this region are expected to be at 32 degrees Fahrenheit or lower

Tide Report

LA JOLLA, SCRIPPS PIER, CALIFORNIA

Almanac

SAN DIEGO, CALIFORNIA

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