2001 Mobile, Alabama (MOB)

views updated

2001 MOBILE, ALABAMA (MOB)

Mobile is located at the head of Mobile Bay and approximately 30 miles from the Gulf of Mexico. Its weather is influenced to a considerable extent by the Gulf.

The summers are consistently warm, but temperatures are seldom as high as they are at inland stations. Normally, in summer, the day begins in the low 70s and the temperature rises rapidly before noon to the high 80s or low 90s, when it is checked by the onset of the sea breeze. On the rare occasions when northerly winds prevail throughout the day, temperatures may reach the high 90s or rise slightly above 100 degrees.

Winter weather is usually mild except for occasional invasions of cold air that last about three days. January is the coldest month in the year. Unusual winters may produce readings that require extensive protective measures as some citrus fruit is grown in the area and outdoor nurseries are numerous.

Based on the 1951–1980 period, the average first occurrence of 32 degrees Fahrenheit in the fall is November 26 and the average last occurrence in the spring is February 27.

The yearly rainfall is among the highest in the United States. It is fairly evenly distributed throughout the year with a slight maximum at the height of the summer thunderstorm season and a slight minimum during the late fall. Rainfall is usually of the shower type and long periods of continuous rain are rare.

Frontal thunderstorms may occur in any month of the year. There may be a thunderstorm every other day in July and August. The summer storms are usually not too violent and seldom produce hail.

The area is subject to hurricanes from the West Indies, the western Caribbean, and the Gulf of Mexico.

NORMALS, MEANS, AND EXTREMES

MOBILE, AL (MOB)

LATITUDE:    LONGITUDE:    ELEVATION (FT):    TIME ZONE:    WBAN: 13894

30 41′ 18″ N   88 14′ 44″ W   GRND: 209   BARO: 212   CENTRAL (UTC + 6)

ELEMENTPORJANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDECYEAR
TEMPERATURE FNORMAL DAILY MAXIMUM3059.763.670.978.584.690.091.390.586.979.570.362.977.4
MEAN DAILY MAXIMUM5460.964.670.477.884.789.891.190.886.979.369.963.177.4
HIGHEST DAILY MAXIMUM608482909410010210410599938781105
YEAR OF OCCURRENCE194919891946198719531952195220001990196319711998AUG 2000
MEAN OF EXTREME MAXS.5474.777.482.186.692.495.997.096.393.888.381.876.586.9
NORMAL DAILY MINIMUM3040.042.750.157.164.470.773.272.968.757.349.143.157.4
MEAN DAILY MINIMUM5440.743.949.456.664.470.672.972.668.557.448.242.857.3
LOWEST DAILY MINIMUM6031121324349605942302283
YEAR OF OCCURRENCE198519961993198719601984194719561967199319501983JAN 1985
MEAN OF EXTREME MINS.5422.425.832.341.552.162.368.567.456.640.831.424.843.8
NORMAL DRY BULB3049.953.260.567.874.580.482.381.877.968.459.853.067.5
MEAN DRY BULB5450.854.360.067.274.580.181.981.777.668.359.052.967.4
MEAN WET BULB1846.450.154.360.167.772.775.174.670.861.554.848.961.4
MEAN DEW POINT1841.444.949.355.364.070.072.672.267.757.250.444.457.5
NORMAL NO. DAYS WITH:
MAXIMUM 90300.00.00.00.34.617.022.420.710.71.00.00.076.7
MAXIMUM 32300.30.00.00.00.00.00.00.00.00.00.00.20.5
MINIMUM 32308.75.41.2 *0.00.00.00.00.00.01.16.022.4
MINIMUM 0300.00.00.00.00.00.00.00.00.00.00.00.00.0
H/CNORMAL HEATING DEG. DAYS304923441774800000521963931702
NORMAL COOLING DEG. DAYS3024143813229546253652138715740212627
RHNORMAL (PERCENT)3072707070717376787671737473
HOUR 00 LST3078788082848587888682828083
HOUR 06 LST3081828487878889918985858386
HOUR 12 LST3060575552535560615952576157
HOUR 18 LST3068646362636671737167717168
SPERCENT POSSIBLE SUNSHINE
W/OMEAN NO. DAYS WITH:
HEAVY FOG (VISBY 1/4 MI)606.04.75.34.62.71.11.01.31.92.84.34.940.6
THUNDERSTORMS602.22.35.04.87.211.917.614.27.22.22.32.279.1
CLOUDINESSMEAN:
SUNRISE–SUNSET (OKTAS)485.35.04.94.64.64.65.14.64.43.54.24.94.6
MIDNIGHT–MIDNIGHT (OKTAS)325.04.64.74.24.24.04.54.23.93.34.04.74.3
MEAN NO. DAYS WITH:
CLEAR487.97.68.79.28.67.04.16.39.014.211.08.8102.4
PARTLY CLOUDY486.26.67.88.711.313.815.014.810.17.67.26.4115.5
CLOUDY4816.914.014.512.011.19.211.99.911.09.111.815.9147.3
PRMEAN STATION PRESSURE(IN)2929.9029.8929.8029.8029.8029.8029.8029.8029.7929.8029.9029.9029.83
MEAN SEA–LEVEL PRES. (IN)1830.1330.1130.0530.0229.9930.0130.0430.0130.0030.0730.1130.1530.06
WINDSMEAN SPEED (MPH)4410.110.510.510.18.77.77.06.87.98.29.19.68.9
PREVAIL. DIR (TENS OF DEGS)2736361414181822040404363636
MAXIMUM 2–MINUTE:
SPEED (MPH)543343931304537405140383351
DIR. (TENS OF DEGS)23211820351611121222172112
YEAR OF OCCURRENCE200119972001200019982001199919981998200120002000SEP 1998
MAXIMUM 5–SECOND:
SPEED (MPH)552435339345749466354494663
DIR. (TENS OF DEGS)22222420203406121221182112
YEAR OF OCCURRENCE200119981999200019991998199819981998200120002000SEP 1998
PRECIPITATIONNORMAL (IN)304.765.466.414.485.745.046.856.965.912.944.105.3163.96
MAXIMUM MONTHLY (IN)6016.9211.8915.5817.6915.0813.0719.2915.1924.1313.2013.6511.3824.13
YEAR OF OCCURRENCE199819831946195519801961194919841998198519481953SEP 1998
MINIMUM MONTHLY (IN)600.981.090.590.080.361.191.721.040.58T0.251.29T
YEAR OF OCCURRENCE196819991967199919961966198319971963197819601980OCT 1978
MAXIMUM IN 24 HOURS (IN)608.345.3710.5713.368.867.3810.076.6210.065.657.027.4613.36
YEAR OF OCCURRENCE196519811990195519951961199719691998198519751995APR 1955
NORMAL NO. DAYS WITH:
PRECIPITATION 0.013010.89.210.06.88.411.115.114.510.25.58.010.2119.8
PRECIPITATION 1.00301.41.72.21.51.81.42.12.41.71.11.01.920.2
SNOWFALLNORMAL (IN)300.10.2TT0.00.00.00.00.00.0T0.10.4
MAXIMUM MONTHLY (IN)583.53.62.7TT0.0T0.00.00.0T3.03.6
YEAR OF OCCURRENCE19551973199319881991199519661963FEB 1973
MAXIMUM IN 24 HOURS (IN)583.53.62.7TT0.0T0.00.00.0T3.03.6
YEAR OF OCCURRENCE19551973199319881991199519661963FEB 1973
MAXIMUM SNOW DEPTH (IN)51223200000000022
YEAR OF OCCURRENCE196419731993JAN 1964
NORMAL NO. DAYS WITH:
SNOWFALL 1.0300.*0.10.00.00.00.00.00.00.00.00.00.*0.1
PRECIPITATION (inches) 2001 MOBILE, AL (MOB)
YEARJANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDECANNUAL
19725.944.465.871.817.723.652.162.353.281.265.675.5949.76
19731.963.4011.639.912.975.336.245.4612.682.154.524.5770.82
19743.896.476.165.912.313.486.607.0310.600.883.914.3161.55
19753.433.757.459.057.123.7611.828.507.376.7212.634.9886.58
19761.802.369.601.6911.114.714.434.773.515.674.644.2158.50
19775.541.866.062.735.301.267.775.429.614.579.514.9464.57
197810.403.884.087.039.746.137.747.343.04T5.054.3668.79
19795.149.148.374.057.023.7010.806.1011.732.806.463.9479.25
19804.951.5813.4615.4315.082.576.546.425.942.901.961.2978.12
19811.238.753.000.9612.516.506.535.063.970.940.856.8257.12
19823.567.426.814.482.8411.0013.147.004.681.613.668.2474.44
19835.8211.896.8912.531.538.091.7211.575.973.815.308.3483.46
19846.134.794.753.534.282.072.3615.190.746.191.672.1253.82
19855.066.395.491.225.773.948.314.3210.3213.201.614.3469.97
19862.674.174.532.164.187.537.135.604.414.838.453.6859.34
19875.818.646.180.8310.697.684.1810.333.620.025.543.6067.12
19884.646.267.804.190.582.346.0410.4314.041.832.301.8062.25
19892.131.475.573.556.479.827.163.824.550.9011.337.2364.00
19907.358.1312.244.516.472.682.281.462.651.231.775.2055.97
199116.073.354.8310.4315.037.048.155.171.870.865.783.0981.67
19929.899.943.611.901.585.247.778.273.261.0312.705.2770.46
19938.034.4810.454.805.243.015.643.523.355.322.873.6960.40
19946.571.324.345.484.595.0910.722.051.765.914.053.0454.92
19957.093.018.537.4612.083.324.637.601.168.708.058.8680.49
19964.656.238.9711.930.365.184.958.295.011.722.526.9266.73
19975.675.985.425.668.508.4918.521.041.985.838.684.3780.14
199816.924.2910.925.191.782.876.905.0224.131.354.952.2086.52
19995.191.099.440.084.717.584.302.874.414.753.053.4350.90
20002.671.306.942.432.383.213.903.673.430.4711.543.8045.74
20014.082.7011.040.881.526.208.559.492.593.531.242.8354.65
POR=131 YRS4.995.056.705.024.845.537.446.545.483.203.875.0663.72
AVERAGE TEMPERATURE (F) 2001 MOBILE, AL (MOB)
YEARJANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDECANNUAL
197258.455.061.869.474.780.781.483.481.671.056.855.569.1
197350.551.764.665.674.681.684.181.480.273.665.352.968.8
197464.055.264.366.175.577.882.281.475.565.559.255.168.5
197556.659.860.766.276.580.781.881.775.370.360.552.168.5
197649.559.464.069.972.779.883.481.075.561.450.648.066.3
197740.952.262.668.275.682.983.583.480.965.260.950.867.3
197841.245.156.768.575.481.282.883.281.669.865.154.467.1
197945.150.760.869.373.379.781.381.176.868.157.251.366.2
198056.249.761.665.974.681.284.683.281.866.357.851.667.9
198146.053.459.571.071.682.684.082.776.869.463.049.967.5
198249.753.363.567.174.480.781.081.076.068.560.456.967.7
198347.151.155.061.872.176.481.881.473.667.457.747.764.4
198446.152.458.665.772.578.179.978.875.672.756.360.466.4
198543.550.764.567.773.779.979.781.076.071.466.148.866.9
198649.756.459.766.174.481.083.380.579.568.564.351.167.9
198748.853.659.264.675.778.981.882.277.262.559.256.566.7
198846.850.658.667.372.879.581.881.378.365.362.753.866.6
198957.154.061.765.974.179.081.081.676.766.159.144.466.7
199054.659.061.765.073.481.181.783.178.668.060.956.768.7
199152.455.961.869.376.079.781.981.377.169.454.154.567.8
199249.457.060.365.472.279.382.479.477.267.456.455.666.8
199355.152.757.062.171.979.982.682.878.368.156.849.866.4
199447.256.160.068.673.479.679.980.476.668.663.855.267.5
199551.055.161.867.175.678.682.583.278.668.556.751.667.5
199649.052.455.463.875.678.881.780.076.467.359.254.366.2
199751.054.966.363.572.277.481.581.479.267.255.149.466.6
199852.253.757.165.276.482.583.583.278.570.363.357.268.6
199955.357.358.670.873.779.181.484.476.068.660.051.668.1
200053.657.663.664.776.979.684.383.977.368.257.046.167.7
200147.258.356.969.674.579.181.680.776.065.163.955.167.3
POR=129 YRS51.454.260.267.074.280.281.881.578.068.759.052.967.4

REFERENCE NOTES:

PAGE 1:

THE TEMPERATURE GRAPH SHOWS NORMAL MAXIMUM AND NORMAL MINIMUM DAILY TEMPERATURES (SOLID CURVES) AND THE ACTUAL DAILY HIGH AND LOW TEMPERATURES (VERTICAL BARS).

PAGE 2 AND 3:

H/C INDICATES HEATING AND COOLING DEGREE DAYS.

RH INDICATES RELATIVE HUMIDITY

W/O INDICATES WEATHER AND OBSTRUCTIONS

S INDICATES SUNSHINE.

PR INDICATES PRESSURE.

CLOUDINESS ON PAGE 3 IS THE SUM OF THE CEILOMETER AND SATELLITE DATA NOT TO EXCEED EIGHT EIGHTHS (OKTAS).

GENERAL:

T INDICATES TRACE PRECIPITATION, AN AMOUNT GREATER THAN ZERO BUT LESS THAN THE LOWEST REPORTABLE VALUE.

+ INDICATES THE VALUE ALSO OCCURS ON EARLIER DATES.

BLANK ENTRIES DENOTE MISSING OR UNREPORTED DATA.

NORMALS ARE 30–YEAR AVERAGES (1961–1990).

ASOS INDICATES AUTOMATED SURFACE OBSERVING SYSTEM.

PM INDICATES THE LAST DAY OF THE PREVIOUS MONTH.

POR (PERIOD OF RECORD) BEGINS WITH THE JANUARY DATA MONTH AND IS THE NUMBER OF YEARS USED TO COMPUTE THE MEAN. INDIVIDUAL MONTHS WITHIN THE POR MAY BE MISSING.

WHEN THE POR FOR A NORMAL IS LESS THAN 30 YEARS, THE NORMAL IS PROVISIONAL AND IS BASED ON THE NUMBER OF YEARS INDICATED.

0.* OR * INDICATES THE VALUE OR MEAN–DAYS–WITH IS BETWEEN 0.00 AND 0.05.

CLOUDINESS FOR ASOS STATIONS DIFFERS FROM THE NON–ASOS OBSERVATION TAKEN BY A HUMAN OBSERVER. ASOS STATION CLOUDINESS IS BASED ON TIME–AVERAGED CEILOMETER DATA FOR CLOUDS AT OR BELOW 12,000 FEET AND ON SATELLITE DATA FOR CLOUDS ABOVE 12,000 FEET.

THE NUMBER OF DAYS WITH CLEAR, PARTLY CLOUDY, AND CLOUDY CONDITIONS FOR ASOS STATIONS IS THE SUM OF THE CEILOMETER AND SATELLITE DATA FOR THE SUNRISE TO SUNSET PERIOD.

GENERAL CONTINUED:

CLEAR INDICATES 0–2 OKTAS, PARTLY CLOUDY INDICATES 3–6 OKTAS, AND CLOUDY INDICATES 7 OR 8 OKTAS. WHEN AT LEAST ONE OF THE ELEMENTS (CEILOMETER OR SATELLITE) IS MISSING, THE DAILY CLOUDINESS IS NOT COMPUTED.

WIND DIRECTION IS RECORDED IN TENS OF DEGREES (2 DIGITS) CLOCKWISE FROM TRUE NORTH. "00" INDICATES CALM. "36" INDICATES TRUE NORTH.

RESULTANT WIND IS THE VECTOR AVERAGE OF THE SPEED AND DIRECTION.

AVERAGE TEMPERATURE IS THE SUM OF THE MEAN DAILY MAXIMUM AND MINIMUM TEMPERATURE DIVIDED BY 2.

SNOWFALL DATA COMPRISE ALL FORMS OF FROZEN PRECIPITATION, INCLUDING HAIL.

A HEATING (COOLING) DEGREE DAY IS THE DIFFERENCE BETWEEN THE AVERAGE DAILY TEMPERATURE AND 65 F.

DRY BULB IS THE TEMPERATURE OF THE AMBIENT AIR.

DEW POINT IS THE TEMPERATURE TO WHICH THE AIR MUST BE COOLED TO ACHIEVE 100 PERCENT RELATIVE HUMIDITY.

WET BULB IS THE TEMPERATURE THE AIR WOULD HAVE IF THE MOISTURE CONTENT WAS INCREASED TO 100 PERCENT RELATIVE HUMIDITY.

ON JULY 1, 1996, THE NATIONAL WEATHER SERVICE BEGAN USING THE "METAR" OBSERVATION CODE THAT WAS ALREADY EMPLOYED BY MOST OTHER NATIONS OF THE WORLD. THE MOST NOTICEABLE DIFFERENCE IN THIS ANNUAL PUBLICATION WILL BE THE CHANGE IN UNITS FROM TENTHS TO EIGHTS (OKTAS) FOR REPORTING THE AMOUNT OF SKY COVER.

HEATING DEGREE DAYS (base 65 F) 2001 MOBILE, AL (MOB)
YEARJULAUGSEPOCTNOVDECJANFEBMARAPRMAYJUNTOTAL
1972-73000332843084423688675001596
1973-74000189137710828810649001037
1974-750005821533627618518370001323
1975-76009112114024751741008001390
1976-7700014943052073835514128002361
1977-780007314943973155126816002227
1978-7900020533556134011528401606
1979-800004324642426745415952001645
1980–81000632354205813231809401815
1981–820054211346348532316148001640
1982–8300563185296545383306119401906
1983–8400760243529582363218691002081
1984–85002172701726653978450101658
1985–86001226950346925118840001543
1986–8700043105433500311193106001691
1987–8800010819428356542121433001818
1988-890005312236325433517081201380
1989-900067120463032618612871001622
1990-910025814528738225815613001301
1991-9200332344342477236165771601692
1992-9300018276297307340260110301611
1993-940006427846454326018246001837
1994-95000359330442628114841301331
1995-960002926344548938132397302030
1996-97000482123464402936380501487
1997-980008929647539031326660001889
1998-99000249428731923420430301195
1999-00002521624143632428568001388
2000–010064530257954220826236001980
2001–0049589312
COOLING DEGREE DAYS (base 65 F) 2001 MOBILE, AL (MOB)
YEARJANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDECANNUAL
197247154017330947851357550522446202945
1973018098303508598518462293110102981
1974851991883323925395173238145362548
197521445711536347552952432518385112732
19760177416024545457850432148402405
19770474132333543579576482853172846
1978001712732949656057350717764342884
197906281442674485125093611461652442
198021761893054956185715121102592814
198104151952175385955573661856042736
198217211911829647550250334217754532658
1983004272293515325142711402922099
198403249624940146943532726116342315
1985427713327545246150433922710872589
198601531792954865734894441588982667
19874021993414225275443734127282427
1988710211082514425295134046761202433
19891633741162894314985233661143102491
1990723348026749352556941715529362635
1991166614934844852851337117623222651
199209319724943754845437310220132333
19935221332244555545594081653702463
1994018331612684434694853571556662461
19950125510633841655457141714520352669
1996123306933541952647334912544172411
1997151810942236377521519435163702442
199800317335953158156941219649522853
19992425112122804325166113401731932646
2000163248693774466075923831516702788
20011271617730342752449233810462122483
SNOWFALL (inches) 2001 MOBILE, AL (MOB)
YEARJULAUGSEPOCTNOVDECJANFEBMARAPRMAYJUNTOTAL
1972–730.00.00.00.00.00.0T3.60.00.00.00.03.6
1973-740.00.00.00.00.0T0.00.00.00.00.00.0T
1974-750.00.00.00.00.00.00.00.00.00.00.00.00.0
1975-760.00.00.00.00.00.00.00.00.00.00.00.00.0
1976-770.00.00.00.00.0T1.90.00.00.00.00.01.9
1977-780.00.00.00.00.00.00.4T0.00.00.00.00.4
1978-790.00.00.00.00.00.0T0.00.00.00.00.0T
1979-800.00.00.00.00.00.00.0TT0.00.00.0T
1980–810.00.00.00.00.00.0TT0.00.00.00.0T
1981–820.00.00.00.00.00.0T0.00.00.00.00.0T
1982–830.00.00.00.00.00.00.00.00.00.00.00.00.0
1983–840.00.00.00.00.0T0.0T0.00.00.00.0T
1984–850.00.00.00.00.00.0TT0.00.00.00.0T
1985–860.00.00.00.00.00.00.00.00.00.00.00.00.0
1986–870.00.00.00.00.00.0T0.00.0T0.00.0T
1987–880.00.00.00.00.00.00.01.70.0T0.00.01.7
1988-890.00.00.00.00.00.00.00.0T0.00.00.0T
1989-90T0.00.00.00.0T0.00.00.00.00.00.0T
1990-910.00.00.00.00.00.00.00.00.00.0T0.0T
1991-920.00.00.00.00.00.00.00.00.00.00.00.00.0
1992-93T0.00.00.00.00.00.00.02.70.00.00.02.7
1993-940.00.00.00.00.0T0.0T0.00.00.00.0T
1994-950.00.00.00.00.00.0TT0.00.00.00.0T
1995-96T0.00.00.00.0T0.0
1996-971.0
1997-98
1998-990.00.00.00.00.00.00.00.0
1999-000.00.00.00.00.00.00.00.00.0T0.00.0T
2000–010.00.00.00.00.00.0T0.00.00.00.00.0T
2001–0.00.00.00.00.00.0
POR=57 YRST0.00.00.0T0.10.10.10.1TT0.00.4

More From encyclopedia.com

About this article

2001 Mobile, Alabama (MOB)

Updated About encyclopedia.com content Print Article

You Might Also Like

    NEARBY TERMS

    2001 Mobile, Alabama (MOB)