------------------INTERNATIONAL STATION METEOROLOGICAL CLIMATE SUMMARY------------------- :STA 722915 | KNTK | TUSTIN MCAS ,CA,US :LAT 33 42N :LONG 117 50W :ELEV 00056(ft) 00017(m) :TYPE NAVY SMOS V3 16031995 44 - ISMCS Station Climatic Narrative POR defined in data tables Marine Corps Air Station Tustin, California is located in the southwestern portion of the state. MCAS El Toro lies 6 miles to the east and the Armed Forces Reserve Center Los Alamitos lies 13.5 miles northwest. The Pacific Ocean is 15 miles from MCAS Tustin at a bearing of 260 true, 10 miles at 225 true and 21 miles at 135 true. The closest point to the ocean is 8.6 Miles at 182 true. The mountains in the area are as follows: The San Joaquin Hills from 153 to 182 true and are 5 to 10 miles from the station. Elevations range from 105 feet at Corona. Del Mar to 716 feet at Pelican Hill (169x) and 1,164 feet at Signal Peak (170) Loma Ridge Lies from 354 to 076 true, 5-10 miles from the station. Elevations range from 789 feet at Irvine Lake (044) to 1,770 feet at Bolero Lookout (074). The Santa Ana mountains lie from 018 to 084 true, 10-25 miles from the station with the major mountain being Santiago Peak at 5,687 feet on a bearing of 076 true at 17 miles. The Islands: San Nicholas (85 miles), Santa Catalina (35 miles), and San Clemente (57 miles) lie offshore in an area 222 to 248 true from the station. The thermoscreen is located on a grassy plot 30 yards east of the weather office. The rain gauge is mounted next to the thermo, screen. The wind vane is located 900 feet east of the centerline of runway 24 and records numerous gusts from helicopters flying over the same area. The wind vane is on a 10 foot square slab of cement in the middle of a cultivated field. The ceiling light projector is installed on a ledge 20 feet up on the side of hanger #1, and is 263 feet from the northeast corner of the hanger. The most predominant weather factor is the California coastal fog and stratus. Being in the area generally described as the "Los Angeles Basin" haze and smoke, referred to as "smog, have a definite influence on the prevailing visibility, especially during the summer months. The greatest storm hazard are the Santa Ana Winds, a Foehn wind that has its greatest frequency of occurrence during the winter months. Forecasting rules for the Santa Ana Winds are contained in the Forecasters Handbook for the local area. Good results have been achieved in forecasting these winds by using these rules. The microbarograph was down for all of 1993, we working on reordering a new one. ------------------INTERNATIONAL STATION METEOROLOGICAL CLIMATE SUMMARY------------------- :STA 722915 | KNTK | TUSTIN MCAS ,CA,US :LAT 33 42N :LONG 117 50W :ELEV 00056(ft) 00017(m) :TYPE NAVY SMOS V3 16031995 37 - STATION CLIMATIC SUMMARY POR: (HOURLY): 1945-1993 TEMPERATURE (DEG F)| PRECIPITATION (INCHES) (^) |REL HUM|VAP|DEW| PR |WIND (KTS) | | MEAN NO. OF DAYS WITH (&) MEANS |EXTREME| PRECIP. |SNOWFALL (@)|PERCENT|PR |PT.| ALT| |SKY|PRECIP.|SNOW- | | | TEMP (DEG F) | | | | | | | |24H| | |24H| (LST) |IN.|(F)| FT.|PREVAIL|MAX|CVR|INCHES |FALL(")|TH |FOG|MAX|MAX|MIN|MIN MAX|MIN|AVG|MAX|MIN| MEAN| MAX| MIN|MAX|MEAN|MAX|MAX| AM| PM|HG.| | $ |DIR|SPD|GST| + | >=| >=| >=| >=|STM| * | >=| >=| <=| <= | 07| 16| |.01|.50|.10|1.5| | 90| 70| 32| 10 JAN 68 44 56 89 28 2.4 11.2 0 2.6 0 0 0 79 56 .27 42 30 WSW 6 50 SCT 6 2 0 0 1 14 0 11 1 0 FEB 69 46 57 89 29 2.4 7.2 T 2.2 0 0 0 81 57 .30 45 30 WSW 6 53 SCT 6 2 0 0 1 13 0 12 # 0 MAR 68 47 58 97 31 2.1 9.9 T 4.1 0 0 0 82 57 .32 47 30 WSW 7 42 SCT 7 1 0 0 1 13 # 12 # 0 APR 72 50 61 108 34 .8 4.0 0 1.3 0 0 0 79 55 .35 49 25 WSW 8 54 SCT 4 # 0 0 # 11 1 18 0 0 MAY 73 55 64 102 38 .2 2.6 0 2.0 0 0 0 77 58 .40 53 25 WSW 7 40 OVR 2 # 0 0 # 13 1 22 0 0 JUN 77 59 68 107 42 .1 1.1 0 1.1 0 0 0 79 59 .46 57 25 WSW 7 29 OVR 1 # 0 0 # 15 1 27 0 0 JUL 82 62 72 112 45 T .2 0 .2 0 0 0 81 57 .53 60 25 WSW 7 27 SCT # 0 0 0 # 17 2 31 0 0 AUG 83 63 73 104 48 .1 1.7 0 1.2 0 0 0 81 57 .55 61 25 WSW 7 31 SCT 1 # 0 0 # 16 3 31 0 0 SEP 83 61 72 112 44 .4 1.9 T 1.7 0 0 0 81 56 .51 60 30 WSW 7 33 SCT 2 # 0 0 1 16 5 30 0 0 OCT 79 56 67 105 30 .3 1.6 0 .8 0 0 0 80 57 .42 54 25 WSW 7 41 SCT 2 # 0 0 # 17 3 29 # 0 NOV 73 47 61 95 32 1.3 5.3 0 3.1 0 0 0 79 56 .32 47 25 WSW 6 55 SCT 4 1 0 0 # 14 # 20 # 0 DEC 68 43 56 93 25 1.5 4.2 T 2.3 T T T 78 56 .27 42 30 W 5 52 SCT 5 1 0 0 # 14 # 12 1 0 ANN 75 53 64 112 25 11.6 26.1 3.5 4.1 T T T 80 57 .38 51 35 WSW 7 55 SCT 40 7 0 0 4 173 18 253 2 0 POR 30 30 30 30 30 29 29 29 29 29 29 29 43 43 37 37 36 37 37 26 30 29 29 29 29 19 19 30 30 30 30 T = TRACE AMOUNTS ( < .05 < .5 INCHES # = MEAN NO. DAYS < .5 DAYS $ = PRESSURE ALTITUDE IN TENS OF FEET (I.E. 50 = 500 FEET) @ = NAVY STATIONS REPORT HAIL AS SNOWFALL; ALSO NWS FROM JULY,1948 - DEC.,1955 + = THE PREDOMINANT SKY CONDITION * = VISIBILITY IS NOT CONSIDERED & = ANN TOTALS MAY NOT EQUAL SUM OF MONTHLY VALUES DUE TO ROUNDING ^ = 24 HR MAX PRECIP AND SNOWFALL ARE DAILY TOTALS (MID-NIGHT TO MID-NIGHT) I = EXCESSIVE MISSING DATA - VALUE NOT COMPUTED " = INCHES -------------------------------------------------------------------------------- MEAN NO. OF DAYS WITH (&) | PRECIPITATION | OBSTR TO VISION | |FRZ | |HAIL| |SMOK|BLOW|DUST| OBS| R/DZ|R/DZ|SNOW|/SLT|PRCP|HAZE|SNOW|SAND| VIS| JAN 9 0 0 # 9 13 0 # 18 FEB 8 0 0 # 8 11 0 # 16 MAR 9 0 0 # 9 12 0 0 16 APR 6 0 0 0 6 12 0 # 15 MAY 7 0 0 0 7 16 0 0 18 JUN 6 0 0 0 6 19 0 0 21 JUL 3 0 0 0 3 23 0 0 25 AUG 2 0 0 0 2 23 0 # 24 SEP 3 0 0 0 3 21 0 0 22 OCT 6 0 0 # 6 19 0 # 22 NOV 6 0 0 # 6 14 0 # 18 DEC 8 0 0 # 8 13 0 # 17 ANN 73 0 0 1 73 196 0 1 232 POR 19 19 19 19 19 19 19 19 19 & = ANN TOTALS MAY NOT EQUAL SUM OF MONTHLY VALUES DUE TO ROUNDING I = EXCESSIVE MISSING DATA - VALUE NOT COMPUTED # = MEAN NO. DAYS < .5 DAYS