CAMP PENDLETON MCAS (NFG)
LAT 33 18N
LONG 117 21W
ELEV 00075(ft) 00023(m)
TYPE NAVY SMOS V3 16031995
PERIOD OF RECORD 1966-1993
GENERAL SUMMARY:
Marine Corps Base Camp Pendleton, California
occupies some 125,000 acres of land and is located
along the Pacific Coast approximately half way
between the cities of San Diego and Los Angeles. The
Air Facility is located in the southwest section of
the base approximately five miles east of the coast.
The Pacific Ocean provides cool summers and warm
winters and the relative humidity remains within the
human comfort range. The base does not experience
the heavy smog conditions common to urban areas to
the north and south.
The high incidence of night and early morning
low stratus and fog especially during the winter
months is the primary source of unfavorable flying
conditions. It tends to remain along the immediate
coast rather than moving inland. Fog stratus during
the winter months is much more unpredictable and can
seriously hamper low-level flying.
A sea breeze is experienced almost every day of
the year. Land breezes and drainage winds are
experienced but are considered to be negligible
because of low speeds and variable directions.
Autumn and winter Santa Ana winds do affect the base
but the high surface winds associated with this
phenomena are rarely experienced. During Santa Ana
conditions fire stations at the 4000 foot level have
reported gusts up to 60 knots while at the same time
winds at the airfield were less than 15 knots. The
uneven terrain over most of the base does not allow
for any real funnel effect.
Rainfall at Camp Pendleton is heaviest during
the winter months particularly late November through
early February. Rainfall amounts increase inland at
higher elevations. This is also true of convective
type precipitation during the summer months. Most
thunderstorm activity is restricted to inland areas
of higher elevations but the occasional storm does
stray to the coastal section of the base.
Destructive weather conditions, while possible, are
not considered a serious threat in this area.
--------------------------------------------------------------
Percent Frequency Daily PRECIPITATION AMOUNTS
OF DAYS NO. PRECIP
WITH OF (INCHES)
INCHES AMOUNTS OBS MEAN HI LOW
NONE TRACE .01 <=.05 <=.10 <=.25 <=.50 <=1.0 <=2.5 <=5.0 <=10.0 <=20.0 >20.0 >=.01
JAN 75.6 5.4 1.0 2.5 2.5 4.1 5.7 1.6 1.6 0 0 0 0 19.0 315 2.07 7.73 0
FEB 69.5 9.2 1.3 3.3 2.0 4.6 3.3 2.6 4.3 0 0 0 0 21.3 305 3.06 8.73 T
MAR 69.1 9.2 1.6 3.3 3.8 2.7 6.0 2.7 1.4 .3 0 0 0 21.7 369 2.32 6.90 0
APR 78.7 8.3 2.1 4.4 1.5 2.7 .6 1.5 .3 0 0 0 0 13.0 338 .70 1.93 T
MAY 79.4 16.1 .3 2.1 .9 .6 .3 0 .3 0 0 0 0 4.5 335 .20 1.16 0
JUN 83.7 13.5 .6 1.1 .3 0 .3 .6 0 0 0 0 0 2.8 362 .16 .96 T
JUL 85.8 11.1 .6 1.1 .8 .6 0 0 0 0 0 0 0 3.1 360 .06 .18 0
AUG 90.3 7.9 .2 1.2 0 .2 0 0 0 0 0 0 0 1.7 403 .02 .14 0
SEP 84.4 12.0 1.3 1.0 .3 .8 0 .3 0 0 0 0 0 3.6 384 .09 .53 0
OCT 77.5 13.0 1.2 4.2 .5 1.7 .7 .7 .2 0 0 0 0 9.5 400 .50 3.32 T
NOV 80.8 6.1 1.6 3.5 1.3 2.6 2.6 1.6 0 0 0 0 0 13.1 313 .83 1.68 .02
DEC 72.5 7.5 1.5 3.9 3.3 4.8 2.4 2.4 1.8 0 0 0 0 20.0 335 1.83 4.63 .05
ANN 79.2 9.7 1.1 2.6 1.4 2.1 1.9 1.2 .8 * 0 0 0 11.1 4462 11.83 19.20 4.75
* = PERCENT < .05
T = ZERO PRECIP, SNOWFALL OR SNOW DEPTH MEASURED BUT A TRACE WAS NOTED
+ = ANNUAL HI AND LOW VALUES ARE DERIVED FROM ANNUAL TOTALS
# = EXCESSIVE MISSING DATA - VALUE NOT COMPUTED
Cumulative Percent Frequency Daily MINIMUM TEMPERATURES
Temp(F) JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN
>=70 0 0 0 0 0 0 2.1 2.8 .8 0 0 0 .5
>=65 0 0 0 0 2.5 3.9 22.6 34.9 16.4 1.7 0 0 7.0
>=60 .3 0 .3 3.8 16.9 33.5 66.2 70.4 56.1 19.9 1.0 0 22.7
>=55 2.6 5.1 9.0 21.4 45.2 74.8 92.5 92.2 79.4 45.9 9.8 1.7 40.3
>=50 13.5 17.7 29.7 47.9 79.8 93.6 99.2 99.7 94.8 75.1 27.6 7.6 57.4
>=45 28.9 41.0 56.3 74.8 95.6 99.4 100 99.7 100 90.7 53.5 24.5 72.3
>=40 53.8 68.5 84.0 95.3 100 100 100 100 100 99.0 79.1 50.0 86.0
>=35 81.3 91.9 96.6 99.5 100 100 100 100 100 100 98.0 80.4 95.7
>=30 96.8 99.2 100 100 100 100 100 100 100 100 100 97.1 99.4
>=25 100 99.7 100 100 100 100 100 100 100 100 100 99.8 100
>=20 100 100 100 100 100 100 100 100 100 100 100 100 100
MEAN 41.0 43.1 45.7 49.0 54.0 57.3 61.2 62.1 59.1 53.6 45.4 40.0 51.0
STDV 7.0 6.3 6.1 6.0 5.4 4.5 4.5 4.7 5.3 6.1 6.3 6.3 9.5
#OBS 342 356 387 365 361 361 385 395 383 418 398 408 4559
* = PERCENT < .05
# = EXCESSIVE MISSING DATA - VALUE NOT COMPUTED
Cumulative Percent Frequency Daily MAXIMUM TEMPERATURES
Temp(F) JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN
>=110 0 0 0 0 0 0 .3 0 .3 .2 0 0 .1
>=105 0 0 0 .3 0 .5 .3 .2 1.6 .7 0 0 .3
>=100 0 0 0 .8 .3 .8 .5 1.0 3.4 2.4 0 0 .8
>=95 0 0 .3 1.4 .8 1.4 1.8 3.5 8.0 4.5 1.0 0 1.9
>=90 .3 .8 .5 4.9 1.1 3.5 6.7 10.0 16.3 9.4 5.0 1.5 5.1
>=85 4.6 5.6 3.4 10.9 2.8 8.4 22.1 25.0 28.5 19.1 11.9 5.1 12.5
>=80 12.7 13.1 8.5 19.1 11.1 20.1 51.3 64.7 56.2 35.4 28.4 11.0 28.1
>=75 23.6 20.3 17.8 32.8 39.3 59.2 87.4 92.7 80.3 67.0 44.8 22.2 49.6
>=70 36.9 36.5 39.4 65.0 76.7 83.2 96.4 100 99.0 89.2 71.1 42.8 70.2
>=65 59.4 60.7 69.1 86.6 91.1 96.5 100 100 100 98.8 91.3 64.3 85.2
>=60 86.2 87.7 94.6 97.0 99.2 100 100 100 100 99.8 99.8 86.1 96.0
>=55 100 99.4 99.7 100 100 100 100 100 100 100 100 98.0 99.8
>=50 100 100 100 100 100 100 100 100 100 100 100 100 100
MEAN 68.3 68.2 68.7 72.7 73.1 75.7 80.3 81.8 81.8 78.3 74.6 68.6 74.5
STDV 8.3 8.3 7.1 8.4 6.0 6.7 6.0 5.6 8.0 8.0 8.1 8.2 9.0
#OBS 347 359 388 366 361 368 390 400 386 424 402 409 4600
* = PERCENT < .05
# = EXCESSIVE MISSING DATA - VALUE NOT COMPUTED
--------------------------------------------------------------------------------
------------------INTERNATIONAL STATION METEOROLOGICAL CLIMATE SUMMARY-------------------
:STA 722926 | KNFG | CAMP PENDLETON MCAS ,CA,US
:LAT 33 18N :LONG 117 21W :ELEV 00075(ft) 00023(m) :TYPE NAVY SMOS V3 16031995
37 - STATION CLIMATIC SUMMARY
POR: (HOURLY): 1966-1993
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 41 55 91 25 2.1 7.7 0 2.3 0 0 0 75 54 .25 40 30 SSW 7 40 SCT 6 1 0 0 # 16 # 11 3 0
FEB 68 43 56 90 24 3.1 8.7 T 2.4 0 0 0 78 57 .28 43 30 SSW 7 49 BRK 6 2 0 0 1 15 # 10 1 0
MAR 69 46 57 98 31 2.3 6.9 0 2.7 T T T 84 60 .32 47 35 SW 7 45 SCT 7 1 0 0 1 19 # 12 # 0
APR 73 49 61 106 32 .7 1.9 T 1.1 0 0 0 79 57 .35 49 30 SW 7 44 SCT 4 1 0 0 0 22 1 20 # 0
MAY 73 54 64 102 40 .2 1.2 0 1.2 0 0 0 76 61 .40 53 30 SW 8 30 SCT 1 # 0 0 # 21 # 24 0 0
JUN 76 57 67 109 43 .2 1.0 T .8 0 0 0 75 60 .44 55 30 SW 8 26 SCT 1 # 0 0 # 24 1 25 0 0
JUL 80 61 71 112 46 .1 .2 0 .2 0 0 0 76 59 .50 59 25 SW 8 26 SCT 1 0 0 0 # 22 2 30 0 0
AUG 82 62 72 105 44 T .1 0 .1 0 0 0 78 60 .53 60 30 SW 8 29 SCT 1 0 0 0 1 22 3 31 0 0
SEP 82 59 71 110 46 .1 .5 0 .5 0 0 0 78 59 .48 58 35 SSW 7 29 SCT 1 # 0 0 # 20 5 30 0 0
OCT 78 54 66 110 37 .5 3.3 T 1.5 0 0 0 76 58 .40 52 30 SW 7 30 SCT 3 # 0 0 # 23 3 28 0 0
NOV 75 45 60 98 32 .8 1.7 T .9 0 0 0 74 54 .28 43 30 SSW 6 47 SCT 4 # 0 0 # 16 1 21 # 0
DEC 69 40 55 91 24 1.8 4.6 0 1.6 T T T 75 54 .24 39 30 NNE 6 47 SCT 6 1 0 0 # 14 # 13 4 0
ANN 74 51 63 112 24 11.8 19.2 4.8 2.7 T T T 77 58 .36 50 35 SW 7 49 SCT 41 6 0 0 3 234 18 255 8 0
POR 13 12 12 13 12 12 12 12 12 12 12 12 17 17 13 13 13 13 13 9 9 12 12 12 12 5 5 13 12 12 12
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 11 0 0 # 11 7 0 0 17
FEB 12 0 0 0 12 7 0 0 16
MAR 12 0 0 # 12 10 0 0 20
APR 6 0 0 0 6 13 0 0 23
MAY 10 0 0 0 10 12 0 0 22
JUN 5 0 0 0 5 14 0 0 25
JUL 5 0 0 0 5 15 0 0 23
AUG 2 0 0 0 2 11 0 0 23
SEP 4 0 0 0 4 12 0 0 23
OCT 8 0 0 0 8 18 0 0 25
NOV 6 0 0 0 6 10 0 0 17
DEC 9 0 # # 9 8 0 # 15
ANN 90 0 # 1 90 137 0 # 249
POR 5 5 5 5 5 5 5 5 5
& = ANN TOTALS MAY NOT EQUAL SUM OF MONTHLY VALUES DUE TO ROUNDING
I = EXCESSIVE MISSING DATA - VALUE NOT COMPUTED
# = MEAN NO. DAYS < .5 DAYS
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