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Weather from John Lindsey at PG&E... Follow these tips to save on energy costs: In winter, open drapes on sunny days to help warm the rooms. Caulk windows, doors and anywhere air leaks in or out. Do not caulk around water heater and furnace exhaust pipes For more energy saving tips, log into www.pge.com ======== PG&E DCPP Weather Forecast for Monday 02/08/10 ============ SEA/SWELL: This morning's 8 to 10 foot northwesterly (290-degree deep-water) swell (with an 11-16 second period) will decrease to 7 to 9 feet (with an 11-15 second period) this afternoon through tonight. This swell will further lower to 6 to 8 feet (with an 11-13 second period) on Tuesday and will remain at this height and period through Wednesday. Combined with this northwesterly swell will be 4 to 6 foot northwesterly (290-degree shallow-water) seas on Tuesday afternoon through Wednesday. The northwesterly swell will decrease to 3 to 5 feet on Thursday. A 951 millibar low pressure system with hurricane force winds developed near the international date line and will move across the Northern Pacific towards the Gulf of Alaska. A northwesterly (290-degree deep-water) swell from this storm is expected to arrive along the Central Coast late Thursday/ Friday morning at 5 to 7 feet (with a 20-22+ second period) increasing on Friday afternoon to 11 to 13 feet (with an 18-20 second period). This swell is expected to remain at this level through Saturday, but with a 15-17 second period). This northwesterly swell will decrease to 10 to 12 feet on Sunday, further lowering next Monday. ATMOSPHERIC CONDITION: Gusty northeasterly (offshore) winds will produce dry and partly cloudy to mostly clear weather in the coastal valleys and beaches. The interior will see mostly overcast conditions this morning, becoming partly cloudy by this afternoon. Today's temperatures will be cool, only reaching the high 50s. Overnight lows will be mostly in the low 40s. A fairly cold upper-level low pressure system, currently about 275 miles to the northwest of San Luis Obispo, will move southeastward towards our area today. This system will track along the California coast before turning inland when it reaches Southern California. Increasing mid to high-level clouds will develop tonight. Rain is forecast on Tuesday along with a chance of thunderstorms. Amounts with the storm will mostly be under a half an inch with a few localized higher amounts under some of the heavier showers and thunderstorms. Snow levels will drop to between 2,500 to 3,000 feet by Tuesday night. This system will also produce cold temperatures with Paso Robles only reaching 49 degrees on Tuesday. San Luis Obispo will be lucky to reach the low 50s. Fresh to strong (19-31 mph) northwesterly winds later Tuesday afternoon and night will make it feel even colder. A few lingering showers are forecast on Wednesday morning, becoming partly cloudy on Wednesday afternoon through Thursday. A cold front will pass our area on Friday with rain, followed by mostly clear and dry weather over the President's Holiday weekend. Air quality forecast for San Luis Obispo: Today Tomorrow Good Good This forecast is provided by the San Luis Obispo County Air Pollution Control District. DIABLO CANYON AIR TEMPERATURES: Diablo Canyon Meteorological Tower Air Temperature Data Yesterday's Today's Tomorrow's Min Max Min Max Min Max 51.3° 55.2° 50.7° 57.0° 48.0° 52.0° PG&E San Francisco Met Office predicted temps: Inland Temperatures, Paso Robles Mon Tue Wed Thu Fri Sat Mon Tue 44 56 41 51 35 56 35 59 41 58 37 61 37 62 39 63 Coastal Valleys Temperatures, San Luis Obispo Mon Tue Wed Thu Fri Sat Mon Tue 44 59 42 53 38 58 39 61 41 59 42 64 42 65 42 65 WINDS: This morning's moderate to fresh (13-24 mph) northeasterly winds will shift out of the northwest by this afternoon. These winds will decrease tonight. Gentle variable winds are forecast on Tuesday morning, increasing out of the northwest to fresh to strong (19-31 mph) levels late Tuesday afternoon and night. The northwesterly winds will decrease on Wednesday, becoming light and variable on Thursday. Gentle southerly winds are forecast on Friday morning, shifting and increasing out of the northwest on Friday afternoon and night. Moderate to fresh (13-24 mph) north to northeasterly (offshore) winds are forecast over the weekend. Today's winds: Max peak winds: NE 25.1 mph at 6:30 a.m. Max sustained wind: NE 18.8 mph at 6:30 a.m. Yesterday's Winds: Max peak winds: NW 34.2 mph at 3:00 p.m. Max sustained wind: NW 28.6 mph at 3:00 p.m. SEAWATER TEMPERATURES: The Diablo Canyon waverider buoy is reporting a sea surface temperature of 59.2 degrees while the Nortek AWAC current meter is reporting a temperature of 56.5°. Intake seawater temperatures will range between 56° and 58° through today, decreasing to 55° to 57° on Tuesday and will continue at this range through Friday. OCEAN CURRENTS: The DCPP Cal Poly CODAR stations and the DCPP Nortek AWAC meter are indicating a southerly (offshore) flowing current this morning. This southerly (offshore) flowing current will continue to flow southward through Wednesday, becoming a northerly (onshore) flowing current on Thursday through Friday. SEAWATER VISIBILITY: Seawater visibility was 4 to 6 feet at the Diablo Canyon Intake. ========================================================================== 24-Hour Ocean Condition Outlook for Monday 02/08 to Tuesday 02/09 Swell: DIR. NW HT. 8-10 PER. 11-16 This morning Decreasing to: DIR. NW HT. 7-9 PER. 11-15 This afternoon Remaining at: DIR. NW HT. 7-9 PER. 11-15 Tonight WINDS: DIR. NE SPEED 15-20 + 25 This morning shifting to: DIR. NW SPEED 15-20 + 25 This afternoon Decreasing to: DIR. VAR. SPEED 5-10 Tonight =========================================================================== 48-Hour Ocean Condition Outlook for Tuesday 02/09 to Wednesday 02/10 Sea/Swell: DIR. NW HT. 6-8 PER. 11-14 Tuesday morning Remaining at: DIR. NW HT. 6-8 PER. 11-13 Tuesday afternoon Remaining at: DIR. NW HT. 6-8 PER. 11-13 Tuesday night (Combined with: DIR. NW HT. 4-6 PER. 4-6 Tuesday afternoon) (Remaining at: DIR. NW HT. 4-6 PER. 4-6 Tuesday night) WINDS: DIR. VAR. SPEED 5-10 Tuesday morning Increasing to: DIR. NW SPEED 25-30 + 40 Tuesday afternoon Decreasing to: DIR. NW SPEED 20-25 + 30 Tuesday night ========================================================================== Extended Ocean Condition Outlook: A west-northwesterly swell is forecast next Friday and Saturday. ========================================================================== The 24 - Hour Ocean Data From The Diablo Canyon Wave rider Buoy MONTH DAY TIME SIG.HEIGHT PERIOD SWELL DIRECTION SST (PST) (FEET) (SECONDS) (TRUE) (DEG. F) 02 04 0613 4.9 11 282 57.9 02 05 0713 8.6 9 244 56.7 02 05 1943 9.5 11 267 57.0 02 06 1243 7.4 11 267 57.2 02 07 1313 9.9 20 268 58.6 02 08 0313 8.1 13 267 59.2 (cm) (sec) 22+ 20 17 15 13 11 9 7 ---------------------------------------------------------------------- 02 04 0613 152 11 1 8 11 61 232 475 300 147 02 05 0713 262 7 3 5 18 94 109 467 1349 764 02 05 1943 289 11 2 4 6 59 876 1839 1237 355 02 06 1243 224 11 2 8 35 202 519 1035 614 329 02 07 1313 301 20 148 1670 314 177 1035 445 440 725 02 08 0313 248 13 8 135 269 110 852 852 528 605 Daily Swell Inspection Program NAME DAY TIME HEIGHT PERIOD SST (PST) (FEET) (SECONDS) (DEG. F) # 66 South Aleutians 8 0350 8 6 38.7 # 06 SE PAPA 600NM West Eureka (No current data today) # 59 California Buoy (No current data today) # 01 Point Reyes Waverider 8 0301 11 13 51.8 # 42 Monterey Waverider Buoy 8 0306 9 13 55.6 # 28 Cape San Martin, Ca 8 0350 12 13 56.1 # 50 DCPP Waverider Buoy, Ca 8 0313 8 13 59.2 # 71 Harvest Platform, Ca 8 0330 11 17 57.0 # 01 NW Hawaii 8 0350 7 14 72.7 * Note: The California Buoy #59 went adrift last January and was recovered last April. Since that time, there have not been any reports from this station. The SE PAPA buoy- 600 miles to the west of Eureka- stop reporting wave data. Both of these stations are beneficial in forecasting swell and weather events along the Central Coast from North Pacific storms. * NOTE: Height (significant swell height) is the average height of the waves in the top third of the wave record. Maximum wave heights may be up to TWICE the height in the data shown in the above table. Precipitation at the Diablo Canyon Ocean Lab. Thursday 1500 through Friday 1500 0.77 inches Friday 1500 through Saturday 1500 0.42 inches Saturday 1500 through Sunday 1500 0.00 inches Precipitation this rain season (July 1 - June 30): 13.40 inches Average season rainfall at DCPP to date: 12.75 inches Ocean Lab Barometer: 30.01 in or 1016.2 mb +0.0 mb (Steady) Sunrise and Sunset Today's Sunrise 6:56 AM Sunset 5:39 PM Tomorrow's Sunrise 6:55 AM Sunset 5:40 PM Tides: Low Tide High Tide AM PM AM PM 8 Monday ----- --- 1:21 -0.2 5:38 5.4 8:20 3.6 9 Tuesday 12:23 2.8 2:04 -0.3 6:33 5.4 8:53 3.7 10 Wednesday 1:15 2.6 2:39 -0.4 7:18 5.5 9:19 3.9 11 Thursday 1:56 2.4 3:09 -0.4 7:58 5.6 9:42 4.0 12 Friday 2:32 2.2 3:36 -0.4 8:33 5.5 10:04 4.1 13 Saturday 3:06 2.0 4:00 -0.2 9:06 5.5 10:25 4.2 14 Sunday 3:41 1.8 4:24 0.0 9:39 5.3 10:47 4.4 15 Monday 4:17 1.7 4:47 0.3 10:12 5.0 11:10 4.5 16 Tuesday 4:56 1.5 5:10 0.6 10:48 4.6 11:35 4.6 17 Wednesday 5:38 1.4 5:33 1.1 11:27 4.2 ----- --- 18 Thursday 6:27 1.4 5:56 1.5 12:01 4.8 12:14 3.7 19 Friday 7:27 1.3 6:20 1.9 12:32 4.8 1:17 3.2 20 Saturday 8:42 1.1 6:48 2.3 1:11 4.9 2:54 2.8 21 Sunday 10:08 0.8 7:35 2.7 2:02 5.0 5:19 2.8 22 Monday 11:24 0.3 9:25 2.9 3:09 5.1 6:50 3.0 23 Tuesday (12:23 -0.2) 11:09 2.8 4:24 5.3 7:29 3.4 ========================================================================= This day in weather history 1989 - A winter storm over California produced snow from the beaches of Malibu to the desert canyons around Palm Springs, and the snow created mammoth traffic jams in the Los Angeles Basin. Sixteen cities in the western U.S. reported record low temperatures for the date. Marysville CA reported an all-time record low reading of 21 degrees above zero. (Storm Data) ========================================================================= 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 or contact by phone at 546-5265. For more information visit, www.pge.com. |
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