. This week's San Luis Obispo Tribune's Weather Watch Column "Time to say farewell to Joan the octopus. Her time at Central Coast Aquarium is at an end" http://www.sanluisobispo.com/news/weather/weather-watch/ . You can catch live weather forecasts weekday mornings from 6-9 a.m. on KVEC 920 AM on First Look with Andy Morris . For weather updates, charts and photos, along with power outage information and other events you can follow me at: https://twitter.com/pge_john =========== PG&E DCPP Weather Forecast for Friday 10/19/18 =========== SEA/SWELL: Today's 4- to 6-foot northwesterly (300-degree, deep-water) swell (with a 13- to 15-second period) will decrease to 3 to 5 feet (with an 8- to 13-second period) on Saturday into Sunday. Increasing northwesterly winds will generate a 4- to 6-foot northwesterly (310-degree, deep-water) sea and swell (with a 5- to 11-second period) on Monday into Wednesday, increasing to 5 to 7 feet (with a 5- to 15-second period) on Thursday into next Friday. ATMOSPHERIC CONDITION: Gentle to moderate (8 to 18 mph) Santa Lucia (offshore) winds are forecast during the morning hours through Saturday. Consequently, clear skies and warm temperatures are expected throughout San Luis Obispo and Santa Barbara Counties. In fact, air temperatures are expected to reach the high 80s and maybe the low 90s throughout the Central Coast today and tomorrow. Sunday will be a transition day as the predominate flow shifts out of the northwest with the return of night and morning marine low clouds with pockets of mist and drizzle. A series of cold fronts are forecast to move into Northern California starting on Monday and continuing through next Friday. These low-pressure systems will produce strong to gale-force (25 to 38 mph) northwesterly winds along the coastline during the afternoon, cooler temperatures and night and morning marine low clouds with areas of fog and drizzle. California could enter into a wet weather pattern starting around Halloween. Please remember, these are long-range models and will probably change. WILDFIRE DANGER RATINGS: Today and Saturday's fire ratings will increase to extreme levels along the beaches, coastal valleys and inland valleys. Weather graphics and power outage information are available at: twitter.com/pge_john. Yesterday's Today's Tomorrow's Min Max Min Max Min Max 53.6° 68.5° 58.5° 67.0° 59.0° 68.0° PG&E Weather Office in San Francisco predicted temperatures for San Luis Obispo County Inland Temperatures, Paso Robles Actual Predicted Thu Fri Sat Sun Mon Tue Wed Thu 37 87 41 88 45 89 45 86 46 83 44 80 46 79 46 81 Coastal Valleys Temperatures, San Luis Obispo Thu Fri Sat Sun Mon Tue Wed Thu 48 78 44 88 50 88 50 78 51 77 51 75 51 76 53 77 WINDS: A pattern of gentle to moderate (8 to 18 mph) Santa Lucia (offshore) winds developing during the morning hours, shifting out of the northwest during the afternoon hours and increasing to fresh to strong (19- to 31-mph) levels will continue through Saturday. Gentle to moderate (8 to 18 mph) northeasterly to northwesterly winds are forecast on Sunday. A pattern of strong to gale-force (25 to 38 mph) northwesterly winds developing during the afternoon hours, decreasing during the night and morning hours to gentle to moderate (8 to 18 mph) levels will start Monday and will continue through next Friday. DIABLO CANYON METEOROLOGICAL TOWER WIND DATA: Today's Maximum Winds: Max peak winds: NE 12.8 mph @ 1:15 a.m. Max sustained wind: NE 4.1 mph @ 1:15 a.m. Yesterday's Maximum Winds: Max peak winds: NW 33.5 mph @ 3:15 p.m. Max sustained wind: NW 26.8 mph @ 3:15 p.m. SEAWATER TEMPERATURES: Intake seawater temperatures will range between 58 and 62 degrees through Sunday, decreasing to 54 to 57 degrees on Monday into next Friday. OCEAN CURRENTS: A southerly (offshore) flowing current is forecast today into next Friday. SEAWATER VISIBILITY: Seawater visibility was 3 to 5 feet at the Diablo Canyon Marina. ========================================================================== 24-Hour Ocean Condition Outlook for Friday 10/19 to Saturday 10/20 SWELL: DIR. NW HT. 4-6 PER. 14-16 This morning Remaining at: DIR. NW HT. 4-6 PER. 13-15 This afternoon Remaining at: DIR. NW HT. 4-6 PER. 13-15 Tonight WINDS: DIR. NE SPEED 10-15 This morning Increasing to: DIR. NW SPEED 20-25 + 30 This afternoon Decreasing to: DIR. NE SPEED 5-10 Tonight ========================================================================== 48-Hour Ocean Condition Outlook for Saturday 10/20 to Sunday 10/21 SWELL: DIR. NW HT. 4-6 PER. 12-14 Saturday morning Remaining at: DIR. NW HT. 4-6 PER. 12-14 Saturday afternoon Remaining at: DIR. NW HT. 4-6 PER. 12-14 Saturday night WINDS: DIR. NE SPEED 10-15 Saturday morning Increasing to: DIR. NW SPEED 15-20 + 25 Saturday afternoon Decreasing to: DIR. NE SPEED 5-10 Saturday night =========================================================================== Extended Ocean Condition Outlook: California could enter into a wet weather pattern starting around Halloween. Please remember, these are long-range models and will probably change. =========================================================================== The 24 - Hour Ocean Data from the Diablo Canyon Waverider Buoy: MONTH DAY TIME SIG.HEIGHT PERIOD SWELL DIRECTION SST 10 14 0400 4.4 17 226 62.2 10 15 0700 3.7 17 210 61.7 10 16 0500 3.0 15 227 61.7 10 17 1600 3.8 20 279 64.2 10 18 0700 4.8 15 265 62.2 10 19 0730 5.0 13 267 62.6 DCPP Ocean Lab Waverider Buoy Energy Spectral Analysis: mo. day time sig.ht. sig.per. energy (cm.sq.) (cm) (sec) 22+ 20 17 15 13 11 9 7 -------------------------------------------------------------------------- 10 14 0400 134 17 6 153 339 142 69 87 82 151 10 15 0700 113 17 3 26 148 127 69 100 145 79 10 16 0500 90 15 1 14 62 138 62 62 40 74 10 17 1600 117 20 16 268 131 160 50 43 27 131 10 18 0700 147 15 4 64 354 596 39 61 24 167 10 19 0730 151 13 1 7 49 375 408 188 67 241 Daily Swell Inspection Program for today: NAME DAY TIME HEIGHT PERIOD SST (PST) (FEET) (SECONDS) (DEG. F) # 66 Ocean Station Papa 19 0703 15 9 55.4 # 36 South Nomad 19 0750 9 8 59.5 # 05 West Washington State 19 0750 5 12 n/a # 02 West Oregon 19 0725 6 11 63.3 # 06 SE Papa 19 0740 8 11 65.3 # 59 California 19 0750 6 13 64.6 # 44 Humboldt Bay Waverider 19 0703 7 13 52.7 # 29 Point Reyes Waverider 19 0723 9 13 59.0 # 42 San Francisco Sandbar 19 0725 6 13 58.8 # 15 Monterey Waverider Buoy 19 0730 7 14 61.0 # 28 Cape San Martin 19 0730 6 13 61.5 # 76 DCPP Waverider 19 0730 5 13 62.6 # 22 Santa Lucia Escarpment 19 0715 8 14 63.3 # 11 Point Arguello 19 0720 7 14 64.0 # 63 Harvest Buoy 19 0725 8 14 62.6 # 19 San Nicolas Island 19 0700 6 14 63.9 # 20 Scripps 19 0750 2 14 64.8 # 33 Pearl Harbor Entrance 19 0700 3 13 80.6 # 04 SE Hawaii 19 0700 6 12 81.9 Precipitation at the Diablo Canyon Ocean Lab: Wednesday 1500 through Thursday 1500 0.00 inches Thursday 1500 through Friday 1500 0.00 inches Precipitation this rain season (July 1 - June 30): 0.74 inches Average season rainfall at DCPP to date: 0.95 inches Ocean Lab Barometer: 30.08 in or 1019.1 mb +1.0 mb (Rising) Today's Sunrise 7:13 AM Sunset 6:23 PM Tomorrow's Sunrise 7:14 AM Sunset 6:22 PM Tides: Low Tide High Tide AM PM AM PM 19 Friday 1:24 0.6 1:48 2.2 8:10 4.4 7:25 4.5 20 Saturday 2:00 0.6 2:24 1.8 8:34 4.6 8:10 4.6 21 Sunday 2:31 0.7 2:58 1.4 8:56 4.9 8:52 4.6 22 Monday 3:01 0.8 3:32 0.9 9:19 5.1 9:32 4.6 23 Tuesday 3:29 1.0 4:08 0.5 9:43 5.3 10:14 4.6 ======================================================================== This day in weather history 1844 - The famous "Lower Great Lakes Storm" occurred. Southwesterly winds were at hurricane force for five hours, driving lake waters into downtown Buffalo NY. The storm drowned 200 persons. (David Ludlum) 1989 - Record breaking snows fell across northern and central Indiana. Totals ranged up to 10.5 inches at Kokomo, and 9.3 inches was reported at Indianapolis. The 8.8 inch total at South Bend was a record for the month as a whole. Up to seven inches of snow fell in extreme southern Lower Michigan, and up to six inches fell in southwestern Ohio. The heavy wet snow downed many trees and power lines. Half the city of Cincinnati OH was without electricity during the morning hours. Temperatures dipped below freezing across much of the Great Plains Region. Twenty cities, including fourteen in Texas, reported record low temperatures for the date. North Platte NE reported a record low of 11 degrees. (Weather Summary) 2016 - Condor Lookout on top of Hi Mountain reported northeasterly winds of 32 mph sustained with gust to 49 mph this morning. ======================================================================== This weather forecast is a service provided by Pacific Gas and Electric Company (PG&E) to our energy customers. The forecast is valid only for the Diablo Canyon Power Plant coastline area (approximately a one-half mile radius surrounding the plant). Some of the information in this forecast is provided by Pacific Weather Analysis, with their permission. Replication of this email must be in its entirety. You may view and copy material from this forecast, provided you retain all copyright, trademark, and other proprietary notices displayed on the materials. Use of these materials in publications, radio, television, other media presentations, or other websites is prohibited without PG&E's express written consent. PG&E is a subsidiary of PG&E Corporation, one of the largest natural gas and electric utilities in the United States, delivering some of the nation's cleanest energy to 15 million people in northern and central California. If you would like to subscribe or unsubscribe to this daily forecast, please send an email to PGEweather@pge.com. Any questions about this forecast please E-mail John Lindsey at jcl5@pge.com