Monthly Climatological Summary
Norman 3SE, Cleveland Co., OK (Lat 35^10'57"N, Lon 97^25'27"W, elev 1130)
January 2002
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     Temperature  Precipitation  Snow      AM         PM
      Max   Min    Water Snow    Depth     Wx         Wx      
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01   39.7  21.2     .00   0.0      T       BKN        BKN
02   29.3  14.0       T     T      T      -SN         SCT
03   36.5  10.8     .00   0.0      T       SKC        SKC
04   44.1  25.0     .03   0.0      0       BKN       -RA
05   48.4  37.4     .20   0.0      0      -RA         BKN
06   48.7  31.1     .00   0.0      0       SKC        BKN
07   44.1  22.3     .00   0.0      0       SCT        SCT
08   65.1  32.7     .00   0.0      0       BKN        BKN
09   70.3  42.1     .00   0.0      0       BKN        SCT
10   56.1  42.3     .00   0.0      0       OVC        BKN
11   54.5  31.1     .00   0.0      0       SKC        SKC
12   52.5  32.0     .00   0.0      0       SKC        SKC
13   57.9  32.7     .00   0.0      0       BKN        FEW
14   52.0  30.4     .00   0.0      0       SKC        SKC
15   59.4  27.1     .00   0.0      0       SCT        BKN
16   53.2  38.7     .00   0.0      0       OVC        SCT
17   45.0  30.0     .00   0.0      0       OVC        SCT
18   36.0  27.9     .13     T      0       OVC       -RA PL
19   45.1  30.4     .02   0.0      0      -DZ         SCT
20   53.8  30.6     .00   0.0      0       BKN        FEW
21   59.2  25.5     .00   0.0      0       SKC        SKC
22   69.6  43.9     .00   0.0      0       BKN        FEW
23   60.1  38.7     .84   0.0      0      -TSRA      +TSRA
24   49.3  28.2     .00   0.0      0       BKN        SKC
25   55.2  23.5     .00   0.0      0       SKC        SKC
26   62.1  32.4     .00   0.0      0       SKC        FEW
27   66.2  39.0     .00   0.0      0       BKN        BKN
28   70.7  47.7     .00   0.0      0       BKN        BKN
29   60.4  33.4     .06   0.0      0       OVC       -SHRA
30   34.9  31.8    1.38   0.0      0      -RA         RA
31   34.9  27.5     .13     T      0       SHRA      -SN


KEY TO AM/PM WX: SKC - sky clear, FEW - few clouds, SCT -
partly cloudy, BKN - mostly cloudy, OVC - overcast, RA -
rain, SHRA - rain shower, TSRA - thunderstorm with rain, 
DZ - drizzle, PL - ice pellets, SN - snow.


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Means and Totals for January 2002
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Average Maximum Temperature:      52.1
Average Minimum Temperature:      31.0

Mean Temperature:                 41.5

Maximum Temperature:              70.7  (1-28-02)
Minimum Temperature:              10.8  (1-03-02)

Days with max temperature 90.0F+:    0             Year:       0
Days with max temperature <32.0F:    1             Year:       1
Days with min temperature <32.0F:   18             Year:      18
Days with min temperature <0.0F:     0             Year:       0

Precipitation:                    2.79             Year:    2.79
Greatest one-day precipitation:   1.38  (1-30-02)

Snowfall:                            T             Year:       T
Greatest one-day snowfall:           T  (1-31-02)
Maximum snow depth at midnight:      T  (1-01-02)

Days with measureable pcpn:          8             Year:       8
Days with pcpn 1.00"+:               1             Year:       1
Days with measureable snowfall:      0             Year:       0
Days with snowfall 1"+:              0             Year:       0
Days with glaze ice:                 0             Year:       0
Days with damaging wind:             0             Year:       0
Days with hail:                      0             Year:       0
Days with thunderstorms:             1             Year:       1
Days with fog:                       0             Year:       0

NOTICE: All temperatures are in degrees Fahrenheit and all precipitation values in inches. Snowfall totals denoted by an asterisk indicate hail.


Summary....Aside from a very cold start to the month, Jan 2002 was mostly warm and dry for central Oklahoma. Very little in the way of precipitation fell during the first three weeks of the New Year, causing the fire danger throughout the western half of the state to rise to very high levels. A midday thunderstorm on the 23rd brought a little bit of drought relief to the immediate Norman area but left most of the OKC area fairly dry. Significant widespread rainfall did not occur across the state until the final few days of the month. For locations north and west of Interstate 44, this rain was not exactly welcome as it fell while temperatures were below freezing. By month's end, virtually the entire northwestern half of the state was coated with 2 to 4 inches of ice which caused thousands of trees and power lines to collapse. Many of the trees that collapsed were 50 to 100 years old. As of this writing (Feb 5) there were still tens of thousands of people in northwestern Oklahoma without power due to the ice storm and dozens of school districts have been out of school for an entire week. Norman was extremely lucky to have totally escaped this ice storm, but we didn't escape it by much as the southern extent of the freezing rain was just 7 miles from us!

Jan 2002 was considerably drier and colder in Turlock CA than it had been in previous months. A total of 1.66 inches of precipitation fell there during the month, bringing the season total there to 8.57 inches. Included in that precip total was a trace of SNOW on the 29th - the first snowfall in Turlock since Dec 20, 1998. A fairly heavy snow shower struck locales east and southeast of Turlock that morning, with enough snow to cover the ground in places like Denair, Delhi, and Ballico. The day before that, snow pellets fell in Ceres and Ballico - in Ballico they fell heavily enough to cover the pavement! The only time I ever saw snow covering the ground in all the years I lived in Turlock was on Feb 4, 1989 - in other words this isn't exactly something that happens all the time there.

With all of the cold and unusual weather Turlock had the last week of the month, it would seem this was a good week for my mom to leave Turlock to visit Hawaii. But it wasn't exactly a good week to visit Hawaii either. Parts of the Big Island saw some amazing rainfall totals while she was there. On the 29th, Hilo had 12.19 inches of rain.....which is about 4 months worth of rain for Norman and a year's worth of rain for Turlock. Not even Ben Lomond or Boulder Creek has seen that much rain in a single day (although they've come pretty close). Fortunately my mom spent most of the trip on the Kona side of the island....although it rained a lot there too it didn't fall in nearly as copious quantities as it did on the Hilo side.