November 2006

Report and Summary

Tyler, Texas
November 2006
by Robert K. Peters, Ph.D.
National Weather Service Cooperating Observer

The month of November 2006 saw near normal temperatures and slightly above normal rainfall. The twelve-month rainfall deficit began improving earlier in the Fall, and was only 25.6 percent of normal on November 30. Compared with November 2005, the month was -.- deg. Cooler, and 3.55 inches wetter. Year-to-date rainfall through November 30 was 9.35 inches greater in 2006 than in 2005.

Drought continued at month's end. However, it was not as severe as was the case earlier in the year. The amount of precipitation deficit was highly variable in the area. Shreveport's 21 percent deficit for 2006 thus far was near Tyler's of 19 percent; Longview's deficit was nearly 40 percent, Fort Worth's 18 percent, while College Station reported a 20 percent surplus. The thirty-day outlook for November 2006 called for below normal temperatures and above normal precipitation.

The week October 29-November 4 saw temperatures about 4 degrees below normal, and rainfall about 75 percent of normal. The week began warm, but a cold front and storm system on the 1st brought the week's rain and colder temperatures during its last half. The week's average temperature was 57.9 deg., and rainfall was 0.82 inch. This was 1.8 deg. Cooler than the previous week. Compared with the same week in 2005, the week was 6.2 deg. Cooler, and 0.28 inch drier.

The week November 5-11 saw temperatures about 4 degrees above normal, and rainfall about 200 percent of normal. A strong storm system crossing on the 6th brought heavy rainfall to the region and severe weather. It was followed by a sharp warm-up as upper air high pressure moved over the region. Strong winds blew between the 7th and 9th ahead of another cold front on the 10th. High temperature records were reached on the 9th. The week's average temperature was 64.6 deg., and rainfall was 2.10 inches. This was 6.7 deg. Warmer than the previous week. Compared with the same week in 2005, the week was 8.1 deg. Cooler, and rain did not fall in 2005.

The week November 12-18 saw temperatures about 3 degrees below normal, and rainfall about 5 percent of normal. Cold air early in the week was replaced by Tropical Maritime air on the 13th and 14th. On the 15th, a strong cold front and storm system crossed with little rain but very strong winds. Tyler clocked a peak gust of 47 mph that afternoon. Cold air followed, with much of the area experiencing a light freeze on the morning of the 17th. The week's average temperature was 54.8 deg., and rainfall was 0.05 inch. The week was 9.8 deg. Cooler than the previous week. Compared with the same week in 2005, the week was 2.9 deg. Cooler, and 0.02 inch wetter.

The week November 19-25 saw near normal temperatures and no rainfall. The week began cold and ended warm. The season's first freeze occurred on the 21st, ending a 241-day growing season which had begun on March 24. As Tropical Maritime air returned on the 22nd, dense fog shrouded much of the area on the mornings of the 23rd, 24th, 25th, and 26th. The week's average temperature was 54.4 deg., 0.4 deg. Cooler than the previous week. Compared with the same week in 2005, the week was 1.3 deg. Cooler and 0.03 inch drier.

Tropical Maritime air covered the area until an Arctic cold front arrived early on the 30th. This resulted in temperatures running up to 15 degrees above normal until the 30th. A crossing disturbance on the 28th brought rain, and additional rain and thunderstorms accompanied the Arctic front. The front brought the coldest weather of the season thus far, and resulted in sleet and freezing rain mixed with rain generally north of a Terrell-Atlanta line. Afternoon temperatures on the 30th were up to 45 degrees colder than on the previous day.

• KEY TO SYMBOLS:
• A = HAIL
• B = BLOWING
• D = DUST
• F = FOG
• H = HAZE
• IP = SLEET
• K = SMOKE
• L = DRIZZLE
• R = RAIN
• S = SNOW
• T = THUNDERSTORM
• Z = GREENWICH MEAN TIME
• ZL = FREEZING DRIZZLE
• ZR = FREEZING RAIN
• - = LIGHT
• + = HEAVY

R FOLLOWING A TEMPERATURE OR PRECIPITATION VALUE = RECORD

The reporting period for temperatures, precipitation, and phenomenon on each day is for the twenty-four hours ending at midnight hours GMT--6 p.m. CST and 7 p.m. CDT. All times are given using the twenty-four hour clock, and are expressed in Greenwich Mean Time.

Observations are from NWS Station 41/9207/4 in Tyler, Texas. The term "normal" refers to averages from the standard climatic period 1971-2000.

NOVEMBER 2006

• 01 62 48 51 0.82 T, PCPN 1600-2100 MX 1200-2400 52
• 02 57 43 49
• 03 63 35 52
• 04 67 42 60
• 05 76 52 71
• 06 71 59 59 2.10 T, F, PCPN 0600-1500, MX 1200-2400 64
• 07 73 48 64 F
• 08 81 51 71
• 09 80 62 76 F
• 10 85R 68 68 MIN 0000-1200 73
• 11 68 44 52 MAX 1200-2400 61
• 12 64 37 56
• 13 73 52 63 tr.
• 14 80 53 72
• 15 72 47 48 0.05 PCPN 1800-1900, MX 1200-2400 59
• 16 57 37 46
• 17 66 33 53
• 18 71 38 57
• 19 62 43 50
• 20 59 35 46
• 21 65 30 52
• 22 72 36 58
• 23 74 44 64
• 24 74 50 64 F
• 25 69 48 62 F
• 26 76 50 69 F
• 27 69 57 64 0.06 PCPN 1800-1900, 2100-2400 MX 1200-2400 67
• 28 74 63 69 0.99 pcpn 0500-0700, 0800-1100, 1500-1600;
• 29 78 66 71
• 30 71 30 30 0.81 PCPN 0600-0800, 1200-1600 MN 0000-1200 42, MX 1200-2400 42

NOVEMBER 2006, RECORDS AND SUMMARY:

• 10TH EQUALED RECORD HIGH MAXIMUM 85, SET FIRST IN 1989;
• MORNING LOW 73 WOULD HAVE BEEN RECORD HIGH MINIMUM,
• WHICH WOULD HAVE REPLACED 69 FROM 1985; COLD FRONT
• CROSSING AT 22Z LOWERED TEMPERATURES.
• 15TH, VERY WINDY, PK GST 47 MPH AT 2111Z;
• 21ST, GROWING SEASON ENDS, 241 DAYS, BEGAN 3/24/06;
• 24TH, DENSE FOG 11Z;
• 25TH, DENSE FOG 10Z-15Z;
• HIGHEST TEMPERATURE 85 ON THE 10TH;
• LOWEST TEMPERATURE 30 ON THE 21ST AND 30TH;
• AVERAGE MAXIMUM 68.0 F.,
• AVERAGE MINIMUM 46.7 F.,
• AVERAGE TEMPERATURE 57.4 F.;
• 0.1 DEG. COOLER THAN NORMAL.
• HEATING DEGREE DAYS 254,
• 100.6 PERCENT OF NORMAL HEATING DEGREE DAYS.
• COOLING DEGREE DAYS 29,
• 114 PERCENT OF NORMAL COOLING DEGREE-DAYS;
• TOTAL PRECIPITATION 4.83 IN.,
• 0.38 IN. GREATER THAN MONTHLY NORMAL.
• 108.5 PERCENT OF NORMAL MONTHLY PRECIPITATION.
• YEAR-TO-DATE PRECIPITATION 32.96 IN.,
• 7.52 IN. LESS THAN NORMAL YEAR-TO-DATE PRECIPITATION,
• 81.4 PERCENT OF NORMAL YEAR-TO-DATE PRECIPITATION;
• 2 DAYS ON WHICH THUNDERSTORMS OCCURRED;
• 5 DAYS ON WHICH THE VISIBILITY WAS HEAVILY RESTRICTED BY FOG, SMOKE, OR HAZE;
• 0 DAYS ON WHICH THE VISIBILITY WAS RESTRICTED BY DUST OR BLOWING DUST;
• DAYS ON WHICH FROZEN PRECIPITATION WAS OBSERVED;
• 0 IN. TOTAL SNOWFALL.
• 6 DAYS ON WHICH MEASURABLE PRECIPITATION OCCURRED.
• 0 DAYS ON WHICH THE MAXIMUM TEMPERATURE REACHED OR EXCEEDED 90 DEG.;
• 0 DAYS ON WHICH THE MAXIMUM TEMPERATURE REACHED OR EXCEEDED 100 0 DEG.;
• 0 DAYS ON WHICH THE TEMPERATURE FAILED TO RISE ABOVE 32 DEG.
• 2 DAYS ON WHICH THE MINIMUM TEMPERATURE REACHED OR FELL BELOW 32 DEG.
• 330 SEASON-TO-DATE HEATING DEGREE DAYS,
• PERCENTAGE OF NORMAL SEASON-TO-DATE HEATING DEGREE DAYS: 110.3,
• 2868 YEAR-TO-DATE COOLING DEGREE DAYS.
• PERCENTAGE OF NORMAL YEAR-TO-DATE COOLING DEGREE DAYS: 114.1;
• PRECIPITATION DURING THE PREVIOUS TWELVE MONTHS 33.69 IN.,
• TWELVE-MONTH PRECIPITATION PERCENTAGE 74.4.

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