SDG&E Weather Briefing

Sunday, August 18, 2019

Safety Talking Point

SCHOOL’S BACK!

Stay aware of pedestrians and rushed drivers in and around school and college zones.  Get the Big Picture and be prepared!

Executive Summary

  • A gradual warming trend will begin today and continue through Wednesday
    • 75-85 at the coast, 85-90 on the mesas, 90-100 inland by Wednesday
  • Some cooling is possible Thursday and Friday, especially along the coast and mesas
  • The FPI will be Elevated inland and in Orange County through the next seven days
  • The FPI will be Normal along the San Diego coast through the next seven days

Forecast Discussion

High pressure will strengthen over the next several days, resulting in a warming trend. Morning low clouds will gradually become less extensive through mid week and will burn off quicker.

For today, temperatures will only be slightly warmer than yesterday with highs generally in the 70s along the coast and 80s inland. The warmest inland spots may touch 90 degrees. The warming continues on Tuesday, and by Wednesday, highs will be in the 70s to low 80s along the coast, mid 80s to low 90s on the mesas, and 90s to near 100 degrees inland. The inland heat will become accompanies by lower humidity. This will keep conditions from becoming too uncomfortable and will also allow for good overnight cooling. At the coast, humidity values will be higher, however the cooler ocean water will moderate temperatures there and keep conditions tolerable.

Several degrees of cooling is possible along the coast and western valleys / mesas on Thursday and Friday as models forecast the development of a coastal eddy. Inland areas will also see some cooling, though it will still be hot through the end of the week.

Fire Discussion

The FPI will be Elevated inland (including Orange County), and Normal for San Diego County coastal districts through the next seven days. Warming will begin early next week, with hot and dry conditions inland by mid week. Fires will easily ignite during the heat of the day, including in the coastal districts, as the grasses are fully cured throughout the region. Live fuel moistures in the brush component continue to decrease and are approaching their critical level in most of the inland areas.

Today's Fire Potential Index (FPI)

ME RA EA NE OC NC BC CM
Elevated

12

Elevated

12

Normal

11

Normal

11

Normal

11

Normal

11

Normal

11

Normal

11

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

7-Day FPI Outlook

  Sun
8/18
Mon
8/19
Tue
8/20
Wed
8/21
Thu
8/22
Fri
8/23
Sat
8/24
ME Elevated

12

Elevated

13

Elevated

13

Elevated

13

Elevated

13

Elevated

13

Elevated

13

RA Elevated

12

Elevated

13

Elevated

13

Elevated

13

Elevated

13

Elevated

13

Elevated

13

EA Normal

11

Elevated

12

Elevated

12

Elevated

13

Elevated

13

Elevated

13

Elevated

13

NE Normal

11

Elevated

12

Elevated

12

Elevated

13

Elevated

13

Elevated

13

Elevated

13

OC Normal

11

Elevated

12

Elevated

12

Elevated

12

Elevated

12

Elevated

12

Elevated

12

NC Normal

11

Normal

11

Normal

11

Normal

11

Normal

11

Normal

11

Normal

11

BC Normal

11

Normal

11

Normal

11

Normal

11

Normal

11

Normal

11

Normal

11

CM Normal

11

Normal

11

Normal

11

Normal

11

Normal

11

Normal

11

Normal

11

Forecast Weather Legend

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

Latest 7-Day Forecast

Sun
8/18
Mon
8/19
Tue
8/20
Wed
8/21
Thu
8/22
Fri
8/23
Sat
8/24
EXPECTED WEATHER CONDITIONS
Sunny
Sunny
Sunny
Sunny
Sunny
Sunny
Sunny
BEACHES
64/71 64/71 64/73 65/75 65/74 65/73 64/73
MESAS
64/76 65/77 65/79 65/82 66/80 65/79 65/80
MIRAMAR
62/77 64/78 63/81 64/85 65/83 64/82 64/82
INLAND ORANGE COUNTY
59/77 60/80 59/83 61/86 62/84 61/83 61/83
INLAND VALLEY
61/80 62/83 62/85 64/90 66/87 64/85 64/85
FOOTHILLS
55/85 56/87 58/91 63/95 65/94 62/91 62/90
MOUNTAINS
59/81 60/83 62/89 67/93 68/90 66/87 65/85
DESERTS
74/105 76/107 77/111 80/114 81/111 79/108 78/106
BACKCOUNTRY WINDS
18 19 19 19 22 19 19
CHANCE OF PRECIPITATION
0% 0% 0% 0% 0% 3% 3%

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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