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PG&E DCPP WEATHER FORECAST |
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Tenera Environmental is proud to provide you with this weather web page to the local Diablo Canyon weather report generated by John Lindsey at PG&E. Get help with your energy bills: The CARE Program provides a monthly discount on Pacific Gas and Electric Co. energy bills for income-qualified households. Qualifications are based on the number of persons living in your home and your total annual household income. To learn more, please log onto www.PGE.com. ============ PG&E DCPP Weather Forecast for Friday 07/30/10 ============ SEA/SWELL This morning's 3- to 5-foot northwesterly (320-degree deep-water) sea and swell (with a 4- to 9-second period) will remain at this height and period all the way through next Friday. Arriving from the Southern Hemisphere: Today's 1-foot Southern Hemisphere (200-degree deep-water) swell (with a 17- to 20-second period) will build to 1- to 3-feet (with an 16- to 19-second period) on Saturday and will remain at this height and period through Monday. This swell will gradually decrease on Tuesday. Another long-period Southern Hemisphere (225-degree deep-water) swell will arrive along our coastline on Wednesday at 1- to 2-feet (with a 14- to 18-second period) and will remain at this height and period through Thursday. ATMOSPHERIC CONDITION: The low pressure trough which has been parked over the state for most of the summer has produced one of the coolest Mid State-Fairs in memory. So far, the average maximum high temperature has only been about 82 degrees or about 11 degrees below normal. The benign summer weather pattern continues today with extensive coastal low clouds and increasing northwesterly (onshore) winds and below normal temperatures throughout much of the Central Coast. The coastal low clouds will burn back to the beaches by early this afternoon. Today's temperatures will range between the low 60s along the northwesterly (Los Osos and Morro Bay) facing beaches and high 60s along the southwesterly facing (Avila beach and Cayucos) beaches today. The coastal valleys will range between the low to mid 70s with the North County hitting the low 90s at the Mid-State Fair. Further east, the California Valley is forecast to reach the high 90s. Little change in the overall weather pattern is expected today, with coastal low clouds and fog burning back to near the coast by early afternoon and temperatures similar to yesterday. A repeat of today's weather is expected for tomorrow with temperatures within a couple degrees of today, then slightly warmer weather is expected on Sunday. A change in the weather pattern is forecast late next week. Current median-range charts indicate the low pressure trough will be replaced by a moderately strong high pressure ridge across the Desert Southwest. This condition should produce much warmer temperatures near the end of next week. DIABLO CANYON AIR TEMPERATURES: Diablo Canyon Meteorological Tower Air Temperature Data Yesterday's Today's Tomorrow's Min Max Min Max Min Max 55.3° 58.5° 55.4° 59.0° 56.0° 59.0° PG&E San Francisco Met Office predicted temps: Inland Temperatures, Paso Robles and Mid-State Fair Fri Sat Sun Mon Tue Wed Thu Fri 51 91 50 86 49 87 48 94 49 94 51 94 53 95 53 98 Coastal Valleys Temperatures, San Luis Obispo Fri Sat Sun Mon Tue Wed Thu Fri 55 70 53 68 52 67 51 68 53 72 53 75 54 76 55 78 WINDS: A pattern of fresh to strong (19 and 31 mph) northwesterly winds developing during the afternoon hours and decreasing during the night and morning hours will continue through Saturday. The northwesterly winds will decrease to moderate to fresh (13 and 24 mph) levels on Sunday through Monday. Another pattern of fresh to strong (19 and 31 mph) northwesterly winds developing during the afternoon hours and decreasing during the night and morning hours will commence on Tuesday and will continue through next Friday. DIABLO CANYON METEOROLOGICAL TOWER WIND DATA: Today's winds: Max peak winds: NW 8.4 mph at 10:45 a.m. Max sustained wind: NW 6.7 mph at 10:45 a.m. Yesterday's Winds: Max peak winds: NW 28.0 mph at 4:45 p.m. Max sustained wind: NW 25.1 mph at 4:45 p.m. SEAWATER TEMPERATURES: The Diablo Canyon waverider buoy is reporting a sea surface temperature of 57.7 degrees while the Nortek AWAC current meter is reporting 52.5 degrees. Intake seawater temperatures will range between 52° and 55° through next Friday. OCEAN CURRENTS: The DCPP Cal Poly CODAR stations are still not reporting, but the DCPP Nortek AWAC meter is indicating a northerly (onshore) flowing current. A pattern of a southerly (offshore) flowing current developing during the afternoon hours, becoming a northerly (onshore) flowing current during the night and morning hours will continue through Friday. SEAWATER VISIBILITY: Seawater visibility was 28 to 30 feet at the Diablo Canyon Intake. ========================================================================== 24-Hour Ocean Condition Outlook for Friday 07/30 to Saturday 07/31 Sea/Swell: DIR. NW HT. 3-5 PER. 4-9 This morning Increasing to: DIR. NW HT. 3-5 PER. 4-9 This afternoon Remaining at: DIR. NW HT. 3-5 PER. 4-9 Tonight (Combined with: DIR. SW HT. 1 PER 17-20 All day today) WINDS: DIR. NW SPEED 10-15 This morning Increasing to: DIR. NW SPEED 20-25 + 35 This afternoon Decreasing to: DIR. NW SPEED 15-20 Tonight =========================================================================== 48-Hour Ocean Condition Outlook for Saturday 07/31 to Sunday 08/01 Sea/Swell: DIR. NW HT. 3-5 PER. 4-9 Saturday morning Increasing to: DIR. NW HT. 3-5 PER. 4-9 Saturday afternoon Remaining at: DIR. NW HT. 3-5 PER. 4-9 Saturday night (Combined with: DIR. SW HT. 1-3 PER 16-19 All day Saturday) WINDS: DIR. NW SPEED 10-15 Saturday morning Increasing to: DIR. NW SPEED 20-25 + 35 Saturday afternoon Decreasing to: DIR. NW SPEED 15-20 Saturday night =========================================================================== Extended Ocean Condition Outlook: Little change. ========================================================================== 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) 07 25 1713 2.8 9 271 56.8 07 26 0643 2.9 10 267 61.0 07 27 0413 3.5 9 281 57.0 07 28 0413 2.8 9 265 56.7 07 29 0543 2.7 10 263 55.6 07 30 0513 2.9 9 282 57.7 (cm) (sec) 22+ 20 17 15 13 11 9 7 ----------------------------------------------------------------------- 07 25 1713 84 9 1 4 5 29 47 58 134 98 07 26 0643 88 9 1 2 4 26 47 64 170 83 07 27 0413 107 9 1 3 2 18 31 108 359 63 07 28 0413 84 9 1 3 19 9 11 76 174 60 07 29 0543 82 9 1 5 17 43 17 62 112 111 07 30 0513 89 4 2 8 29 30 23 35 99 211 Daily Swell Inspection Program NAME DAY TIME HEIGHT PERIOD SST (PST) (FEET) (SECONDS) (DEG. F) # 66 South Aleutians 30 0550 4 5 49.6 # 166 Ocean Station Papa 30 0502 6 7 55.0 # 01 Point Reyes Waverider 30 0501 8 7 53.2 # 42 Monterey Waverider Buoy 30 0550 4 8 59.2 # 28 Cape San Martin, Ca 30 0550 5 7 57.7 # 50 DCPP Waverider Buoy, Ca 30 0513 3 9 57.7 # 71 Harvest Platform, Ca 30 0530 4 5 56.5 # 01 NW Hawaii 30 0550 6 17 79.7 * 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. The Offshore Buoys: The California marine buoy No. 59, stationed about 357 nautical miles west of San Francisco, went adrift in January 2009 and has not reported since. The buoy center has replacement buoy fully tested and ready for deployment just sitting in their yard. But because of the oil spill in the Gulf of Mexico, it may be some time before these buoys are put into service. Many U.S. Coast Guard vessels are being diverted to the Gulf of Mexico to help mitigate the largest oil spill in United States history. 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): 0.01 inches Average season rainfall at DCPP to date: 0.00 inches Ocean Lab Barometer: 29.98 in or 1015.4 mb +0.0 mb (Steady) Sunrise and Sunset Today's Sunrise 6:11 AM Sunset 8:08 PM Tomorrow's Sunrise 6:11 AM Sunset 8:07 PM Tides: Low Tide High Tide AM PM AM PM 30 Friday 7:09 0.9 7:42 2.2 12:32 4.6 1:47 4.6 31 Saturday 7:34 1.3 8:44 2.1 1:15 4.1 2:19 4.7 1 Sunday 8:01 1.8 10:00 1.9 2:11 3.6 2:56 4.8 2 Monday 8:30 2.2 11:22 1.5 3:33 3.1 3:40 5.0 3 Tuesday 9:10 2.6 ----- --- 5:34 2.9 4:33 5.2 4 Wednesday 12:34 1.0 (10:17 2.9) 7:28 3.1 5:31 5.5 5 Thursday 1:30 0.4 (11:42 3.0) 8:30 3.3 6:29 5.8 6 Friday 2:17 -0.1 12:55 2.9 9:08 3.6 7:24 6.2 7 Saturday 2:59 -0.6 1:57 2.6 9:41 3.8 8:16 6.5 8 Sunday 3:39 -0.9 2:52 2.3 10:13 4.1 9:06 6.7 9 Monday 4:18 -1.0 3:46 1.9 10:47 4.5 9:56 6.7 10 Tuesday 4:56 -1.0 4:40 1.6 11:21 4.8 10:46 6.4 ========================================================================= 1979 - A forty-minute hailstorm bombed Fort Collins, CO, with baseball to softball size hail. Two thousand homes and 2500 automobiles were damaged, and about 25 persons were injured, mainly when hit on the head by the huge stones. ========================================================================= 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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