PITSFORD HALL WEATHER STATION NORTHAMPTON, UNITED KINGDOM MONTHLY WEATHER REPORT - NOVEMBER 2003 Headline: Changeable and mostly mild despite a brief cold snap in the final week. Wet in the latter half of the month. The month opened on an unsettled theme with low pressure tracking to the north of the region. This brought showers and spells of rain on the 1st and 2nd , although was generally mild. High pressure then developed and moved towards Scandinavia giving a dry spell. It remained mild with winds coming mainly from the south. There were some mist and fog patches around in the morning, but good sunny spells broke through particularly on the 5th and 7th. A change back to unsettled conditions occurred on the 9th as a succession of frontal systems crossed the county from the west. Temperatures settled back to about normal for the time of year. Mornings were occasionally plagued by mist and fog patches, particularly on the 11th. Most days recorded some sunshine, but totals were modest. These fronts were followed on the 13th by an area of low pressure working eastwards from southern Ireland accompanied by strong winds, gusting to 47mph at Pitsford Hall on the 14th and over 50mph in other parts of the county. From the 16th mild and changeable conditions prevailed as the region lay between low pressure to the north and high pressure to the south. It remained generally cloudy and, with the exception of 0.6 hrs on the 18th, no sunshine was recorded between the 17th and the 23rd. Frequent fronts brought a fair amount of rain including 11.4mm of rain on the 22nd associated with a front that had become fairly stationary over the south-east. The unsettled theme continued throughout the final week. The 25th was particularly wet as deep depressions tracked to the north. 11.5mm of rain was delivered over 6.2hrs at Pitsford Hall. The 27th and 28th saw a brief dry interlude with fairly sharp overnight frosts before more mild and wet weather moved in from the west on the 29th. The month ended on the 30th with further showers tied into a low which tracked across the region from the south-west. Air Temperatures The Highest Maximum: 15.4C on 5th The Lowest Maximum: 6.4C on 22nd The Highest Minimum: 10.4C on 19th The Lowest Minimum: -1.6C on 27th The Mean Maximum: 11.3C The Mean Minimum: 4.7C The Overall Mean: 8.0C Difference from the Monthly Mean: 1.1C Relative Humidity: Highest Relative Humidity (at 0900): 100.0% on 4th & 30th Lowest Relative Humidity (at 0900): 80.8% on 14th Mean Relative Humidity (at 0900): 94.0% Dew Point: The Highest Dew Point (at 0900): 11.4C on 18th The Lowest Dew Point (at 0900): -0.1C on 27th The Mean Dew Point (at 0900): 6.6C Rainfall: Total: 72.4mm Difference from the Monthly Mean: 135.8% Duration: 67.6hrs Highest 24 hour fall (from 0900): 11.5mm on 25th Rain Days (>/=0.2mm): 17 Wet Days (>/=1.0mm): 14 Sunshine: Total Duration of Bright Sunshine: 77.7hrs Sunniest day: 7.3hrs on 1st Days without sunshine: 10 Cloud cover (mean at 0900): 6.3oktas (78.8%) Pressure (reduced to sea level): The Highest Pressure: 1028.6mb on 7th The Lowest Pressure: 982.7mb on 26th Mean Pressure (recorded at 0900): 1010.0mb Winds Run of wind (mean over 24 hrs): 133.4miles Mean daily wind speed: 7.2mph Highest daily wind speed: 17.8mph on 14th Run of wind (to date): 4001.0miles Highest Maximum Gust: 47mph on 14th Highest wind strength (at 0900): 23.1mph on 26th Mean wind strength (at 0900): 9.1mph Winds from the Following Directions: N 3 NE 0 E 3 SE 2 S 15 SW 1 W 2 NW 3 Calm 1 Ground Temperatures: Lowest Grass Minimum: -4.8C on 28th Mean Grass Minimum: 1.5C Lowest Concrete Minimum: -2.0C on 28th Mean Concrete Minimum: 4.0C Lowest Bare Earth Minimum: -1.0C on 28th Mean Bare Earth Minimum: 3.9C Soil/Earth Temperatures: Surface mean: 7.3C 5cm mean: 7.1C 10cm mean: 7.5C 20cm mean: 8.2C 30cm mean: 8.4C 40cm mean: 8.3C 50cm mean: 8.8C 100cm mean: 9.4C Days with: Thunder: 0 Hail less than 0.5mm: 0 Hail greater than/equal to 0.5mm: 0 Snow or snow & rain: 0 Fog 5 Air Frost: 2 Duration of Air Frost: Ground Frost: 11 Total Evaporation (tank) 12.76mm