July & Yearly 1999

Graphs follow the text summary!


SUN, AUGUST 1, 1999 9:30 PM EDT
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 MONTHLY SUMMARY OF CLIMATOLOGICAL DATA - PORTSMOUTH, VIRGINIA
 Portsmouth Weather Records Service
 Portsmouth, Virginia    23702-2017
 (3 miles south / West Cradock Section)
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 Monthly summary of Local Climatological Data for Portsmouth, 
 Virginia, West Cradock Section, during the month of July 1999.
 Time is EDT.
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 D HT  DN  LT  DN  MT    DN  HDD  CDD PREC WD WS WAS    SC WXR  TYPE/REMARKS
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1   90  +4  74  +5  82.0  +5     17.0    T SSW23 S  7.1 PC -SHRA HUMID
2   91  +4  74  +4  82.5  +4     17.5      SSW19 SSW5.0 PC HOT HUMID
3   94  +5  74  +5  84.0  +5     19.0      SSW15 SSW5.3-PC HZ HOT HUMID
4   95  +7  75  +5  85.0  +6     20.0      W  17 S  4.5-PC HZ HOT HUMID
5  *98 +10 *78  +7  88.0  +9     23.0      NNE15 NNE4.5-PC HZ HOT HUMID
   *NEW STATION MAX HIGH TEMP RECORD     *TIED AREA MAX HIGH TEMP
                          *NEW STATION MAX MINIMUM TEMP
6 *101 +12 *80  +8  90.5 +10     25.5      S  15 S  2.8 SU VERY HOT HZ HUMID
   *NEW STATION MAX HIGH TEMP RECORD     *TIED HIGH MINIMUM TEMP RECORD
7   96  +6  72  +1  84.0  +4     19.0*1.18*NNE32 S  4.9 PC HZ HOT HUMID TSRA(2) BR
   *NEW STATION DAILY PRECIP RECORD       *NEW DAILY MAX WIND GUST SPEED
8   90   0  71  +1  80.5  +1     15.5      W  16 W  2.8 SU -HZ-BR NOT AS HOT
9   96  +5  75  +3  85.5  +4     20.5      SSW22 S  4.3 SU -HZ HOT HUMID
10  95  +5  79  +7  87.0  +6     22.0    T W  23 S  5.4 PC -HZ BREEZY HOT SHRA
                                                           DST LTG HUMID FROPA
11 *80  -8  68  -3  74.0  -6      9.0 0.04 NNE22 NNE4.5 PC SHRA COOLER
                                          *TIED STATION MINIMUM MAX TEMPERATURE
12 *74 -15  68  -3  71.0  -9      6.0 0.81 NNE18 NNE5.0  C SHRA BR RA
                                          *NEW STATION MINIMUM MAX TEMPERATURE
13 *72 -18  67  -6  69.5 -12      4.5 0.51 N  19 NNE5.9  C RA SHRA BR DZ
                                          *NEW STATION MINIMUM MAX TEMPERATURE
14 *71 -19  68  -5  69.5 -12      4.5*2.30 NNE18 NNE4.4  C RA BR
   *NEW STATION MINIMUM MAX TEMPERATURE   *NEW STATION DAILY PRECIP RECORD
15  82  -7  69  -4  75.5  -5     10.5      N  13 NNE2.0 PC HUMID HZ
16  86  -3  67  -5  76.5  -4     11.5      N  16 NE 1.9 PC HZ HUMID
17  91  +2  72   0  81.5  +1     16.5      S  12 S  2.8 PC HZ HUMID
18  92  +2  74  +3  83.0  +2     18.0      SSW15 S  4.2 PC HZ HUMID
19  94  +3  75  +3  84.5  +3     19.5      W  21 S  4.6 PC HZ HUMID
20  95  +4  77  +5  86.0  +5     21.0*1.34 SE 21 NNE2.6 PC TSRA(1) BR
                                          *NEW STATION DAILY PRECIP RECORD
21  86  -5  76  +3  81.0  -1     16.0      NE 14 NNE2.6  C H BR HUMID
22  93  +3  76  +3  84.5  +3     19.5      W  16 SSW1.8 PC HZ BR HUMID
23  91  +3 *79  +7  85.0  +5     20.0      NNE15 ESE3.0 SU HZ BR HOT HUMID
                                          *NEW STATION MAX MINIMUM TEMPERATURE
24  97  +8  71   0  84.0  +4     19.0*7.07 NNE35 S  4.8 PC HZ HOT HUMID +TSRA(4)
                                                           BR GR(2 OCCURENCES)
   *NEW STATION DAILY PRECIP RECORD AND ALL-TIME STATION DAILY PRECIP RECORD
                *NEW STATION MONTHLY PRECIP RECORD FOR JULY
25  91  +2  72  +1  81.5  +2     16.5      W  16 W  4.5 PC BR HZ HOT HUMID
26  93  +4  73  +2  83.0  +3     18.0      W  19 W  3.3 PC HZ BR HOT HUMID
27  96  +7  71  -1  83.5  +3     18.5      W  16 W  1.8 SU HZ BR HOT HUMID
28  95  +7  76  +4  85.5  +5     20.5 0.07 W  30 W  3.2 PC HZ HOT HUMID -TSRA
29  90  +2  73  +2  81.5  +2     16.5      WSW16 W  3.6 PC HZ HOT HUMID
30  95  +7 *76  +5  85.5  +6     20.5      W  13 S  0.7 SU HZ HOT HUMID
                                          *NEW STATION MAX MINIMUM TEMPERATURE
31 *98  +9 *80  +9  89.0  +9     24.0      W  15 W  2.6 SU HZ HOT HUMID
   *NEW STATION MAXIMUM TEMPERATURE       *NEW STATION MAX MINIMUM TEMPERATURE
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 SUMMARY OF JULY 1999:

 TEMPERATURE:

    Monthly mean:        High =  90.6   Low =   73.6  Mean =  82.1 
    Departure < Normal:  High =  +1.6   Low =   +2.2  Mean =  +1.9 

    Degree Days:            Heating =    0.0   Cooling =  529.0
    Num er of Days Using:   Heating =     0    Cooling =    31

    Days with maximum temperature >=100:  1
    Days with maximum temperature >= 90: 24
    Days with maximum temperature <= 32:  0
    Days with minimum temperature <= 32:  0
    Days with minimum temperature <=  0:  0

 PRECIPITATION:

     Total  month =          13.32"    Departure from Normal =  + 7.99"
     Normal month (to date) = 5.33"                             or 250%
     Average daily =          0.43"        
     Normal daily =           0.17" 
     Number of days with measurable precipitation =  8
 
     Year-to-date = 31.47" Departure =  + 3.30" or 112% of normal
                                        
     Maximum for July = 13.32" in 1999      -->  (Since
     Minimum for June =  1.32" in 1978      -->  (1976)

     Number of days with 0.01" or more:  8          Snowfall
     Number of days with 0.10" or more:  6    July total =  0.00"
     Number of days with 0.50" or more:  6     
     Number of days with 1.00" or more:  4    July   max =  0.0"

  DAILY EXTREMES:   Low  temperature =  67 on the 13th, 16th
                    High temperature = 101 on the 6th          
         Maximum daily precipitation = 7.07" on the 24th
            Maximum 24-hour rainfall = 7.07" on the 24th
         Maximum barometric pressure = 30.216" on the 15th
         Minimum barometric pressure = 29.673" on the 30th
                       Frozen precip =  0.00"

  WIND: 
                   Maximum wind gust = NNE 35 MPH on the 24th

  NUMBER OF:

 Days Cloudy:               4         Days with thunderstorms:  4
 Days Partly Cloudy:       20              # of Thunderstorms:  8
 Days Clear/Sunny:          7  Days with some type of snowfall: 0
 Days with Fog/Ground Fog: 13
 Days with Dense Fog:       0
 Days with Frost:           0
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  YEAR-TO-DATE: (through July 31st, 1999) 

  Temperatures             Degree Days        Precipitation 
                               
  Mean maximum: 69.4 (+0.6) Heating: Aqueous:  31.47" (DEP +3.30") 112%
  Mean minimum: 51.5 (+1.7)  1935.0    Maximum monthly: 13.32"/JUL.
  Mean monthly: 60.4 (+1.1) Cooling:   Minimum monthly:  2.14"/FEB.
                              969.5
  Highest:     101, July 6     
                                             Snowfall:          TRACE"
  Lowest:       17, January 6          Maximum daily:   TRACE" (Jan. 9,10 & Mar. 8)
  Days with max temperature >= 90: 33  Maximum monthly: TRACE" (Jan. & Mar.)
  Days with max temperature <= 32:  1  
  Days with min temperature <= 32: 21  Days with some type of
  Days with temperature     <=  0:  0    snowfall:       8
                                       Days with measurable
  Number of:                             precipitation: 69 or 32.55%
  Days using Heating:       120 
  Days using Cooling:        90        Days with thunderstorms: 15
  Days Cloudy:               55        Number of thunderstorms: 20
  Days Partly Cloudy:       118  
  Days Clear/Sunny:          39        Greatest 24-hour daily rainfall:
  Days with fog/ground fog:  84                 7.07"/July 24th, 1999
  Days with dense fog:        3

  Wind (Highest Gust): SSW 54 miles per hour, March 3rd

  Barometer:   Highest 30.807" on January 31st
               Lowest: 29.370" on April 9th 
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METAR DENOTATIONS:

BC   Patches
BL   Blowing 
BR   Fog with visibilites > 5/8 but <=6 statute miles and below
     to 5/8 mile
DU   Dust (widespread)
DS   Duststorm
DZ   Drizzle
FC   Funnel Cloud
FC+  Tornado/waterspout
FG   Fog with visibility <= 5/8 statute miles
FU   Smoke 
FZDZ Freezing drizzle
FZRA Freezing rain
FZFG Freezing fog              
GR   Hail                            
GS   Small hail                     
HZ   Haze                            
IC   Ice crystals                    
PE   Ice pellets                                                   
PY   Spray
RA   Rain
SA   Sand                              
SS   Sandstorm                              
PO   Sand or dust whirls                              
SG   Snow granules
SH   Shower                               
SHRA Shower of rain
SHSN Shower of snow
SHPE Shower of ice pellets
SHGR Shower with hail
SHGS Shower with small hail
SM   Statute miles                              
SN   Snow
SQ   Squalls
TS   Thunderstorm 
TSGR Thunderstorm with hail
TSGS Thunderstorm with small hail
TSPE Thunderstorm with ice pellets
TSRA Thunderstorm with rain
TSSN Thunderstorm with snow
UP   Unknown precipitation
VA   Volcanic ash 
VC   Vicinity
VV   Used for obscurred sky

METAR Qualifiers: (now placed in FRONT of code)

-  Light  
+  Heavy 
DR Low drifting
M  Below (as in -x.x degrees)
MI Shallow 
PR Partial  
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PWRS DENOTATIONS: SU/CL = Clear sky; PC = Partly cloudy sky; C = 
cloudy sky; NA, not available; NR, not recorded; TEMP, temperature; 
MAX, maximum; MIN, minimum; T, trace of precipitation; INOP, 
inoperative equipment; MPH, miles per hour; DN, departure from normal; 
DEP, departure; YR, year; NORM, normal; DST LTG, distant lightning; 
FROP or FROPA, frontal passage; AM morning; AFT afternoon hours; 
EVE evening hours; PM evening hours; E estimated; 
VBL, variable wind directions; TS, tropical storm; *tied station record
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COLUMN DENOTATIONS:
D    Date                      PREC  Precipitation
HT   High Temperature          WS  Maximum Wind Speed (Gust)
LT   Low  Temperature          WD  Direction of Maximum Wind Gust
MT   Mean Temperature          WAS Average Wind Speed & Dominant 
                                   Direction
			       HB  High Barometer Reading (Inches)
DN   Departure from Normal     LB  Low  Barometer Reading (Inches)
			       SC  Dominant Daily Sky Cover
HDD  Heating Degree Days       WXR TYPES  Observed Weather
CDD  Cooling Degree Days                  Conditions and Remarks
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NOTES: All temperatures are in degrees fahrenheit.  All precipita-
tion measurements are in inches.  All wind speeds are in miles per 
hour.
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July 1999 Temperature Graph
July 1999 Rain/Relative Humidity Graph
July 1999 Wind Graph
July 1999 Barometer & Wind Graph


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