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Belgian weather blog September 2005

Weather news
1 Becoming very cloudy during forenoon. Light rain between 1230-1530 giving 1 mm. Afterwards remaining Sc grey. Breaking clouds towards midnight. Top Tmax: Kleine Brogel 24,2C. Zaventem had 22,3C.
2 Quite sunny day with from noon on a few fair weather cumulus, later during afternoon invasion of Ci & Cs cloudiness. Top Tmax: Kleine Brogel 26,8C. Zaventem had 24,1C.
3 Thick fog with visibilities below 200m from 0600 till 1100. Remaining very cloudy with Stratus till 1230, becoming partly cloudy with a few flat Cumulus, and still hazy till 1500. Top Tmax: Kleine Brogel & Chivres 26,3C. Zaventem had 25,4C.  
4 Sunny summer day with some Cirrus. Top Tmax Chivres 28,3C. Zaventem had 27,9C.
5 Another sunny summerday, during late afternoon tempo scattered cumulus clouds. Top Tmax: Kleine Brogel 30,3C. Zaventem had 29,4C. Some weak thunderstorm activity during late afternoon over provinces of West-Vlaanderen, Hainaut and Namur.
6 Around 0500 some thunder was heared in the SE, but remaining dry. After a misty start becoming partly cloudy with Ci, Ac & Cu. Top Tmax: Kleine Brogel 27,2C. Zaventem had 25,9C. Today two bursts of thunderstorms passed Belgium. The one in early morning had moderate activity over Luxembourg, Namur, Brabant & Antwerp. Brasschaat collected 11 mm. The one during the afternoon turned out to be weak over West-Vlaanderen, with max 3 mm at Ostend.
7 Sunny start of the day with from noon on scattered cumulus clouds, later on also some Cirrus. Top Tmax: Kleine Brogel 28,8C. Zaventem had 26,5C.
8 Sunny start of the day with from noon on a few fair weather cumulus. Top Tmax: Kleine Brogel 30,0C. Zaventem had 28,6C
9 Tempo rain during the night giving 2 mm, remaining very cloudy with light rain between 1500-2200 giving another 2 mm. Top Tmax: Kleine Brogel 28,4C. Zaventem had 24,6C. Today weak to moderate thunderstorms developed over provinces of Oost-Vlaanderen, Antwerp, Limbourg, Lige and Luxembourg. 
10 Partly cloudy with at dawn some shallow fog. During the day building TCu/Cb with around 1530, 1600 and 1700 rumbles of thunder. From 1830 on continuous rumbles. Between 2115-2245 the passage of a moderate thunderstorm with downpour, in the begin accompanied  by a weak downburst with winds up to 30KT. As much as 38mm fell within 20 minutes, a total of 49 mm was collected after the thunderstorm cleared the area. Top Tmax: Diest 26,4C. Zaventem had 25,5C. During early morning a weak thunderstorm reached West-Vlaanderen. During the afternoon development of moderate to severe thunderstorms over all provinces of Belgium with local flooding. Water problems arose at Menen, Wevelgem, Avelgem, Oudenaarde, Geerardsbergen, Brakel, Berlaar, Heist-op-den-Berg, Maasmechelen, Lanklaar, Zelem, Tienen, Diest, Leuven, Machelen, Evere, Sint-Genesius-Rode, Sint-Pieters-Woluwe, La-Roche-en-Ardenne. Officially precipitation recordings of last 24 hours till 0200 on 11th: Birset 51 mm, Zaventem 48 mm (later corrected to 39 mm via automatic station values), Ukkel 35 mm. Larger amounts may have fallen, possible up tot 100 mm in a couple of hours. 
11 During the night turning misty, at dawn even a moment fog. Remaining misty all day long with at first lots of St later lifting to Sc. Some rain around 1000 giving 1 mm. Top Tmax: Brasschaat 24,6C. Zaventem had 21,4C. This morning a moderate thunderstorms with heavy rain did occur over Ostend, this afternoon a severe thunderstorm developed over north of province Oost-Vlaanderen. Other weak thunderstorms were formed over Brabant, Antwerp and West-Vlaanderen. Top rainfall amount 0200-2000: Ostend 49 mm, Ghent 12 mm.   
12-17 No weather reports.
18 Clear and cold night with Tmin 3,2C. Development of a few Cu from noon on, dissipating after 1700.  The first negative screen temperature of the new "winter season" did occur at Elsenborn: -1,7C, and in fact the last frost in Belgium did occur at the same station on May 19. Brasschaat came close with 1,6C, Kleine Brogel had 1,8C. Negative grass minima were observed at Chivres & St-Hubert with -1C. Kleine Brogel, Spa & Florennes had 0C. Top Tmax Kleine Brogel 19,1C. Zaventem had 16,9C.
19 Another clear & cold night with Tmin in garden of 3,1C. All day long blue sky. Again Elsenborn went into the negative with Tmin of -1,0C. Brasschaat had 1,9C, Kleine Brogel 2,2C. Grass minima of 0C did occur at: Charleroi, Florennes & St-Hubert. Top Tmax: Kleine Brogel 20,0C. Zaventem had 18,5C.
20 Clear night with gardens Tmin 4,1C. Cirrus from early morning on with tempo a few flat Cu between 1330-1630. Elsenborn once again frost with Tmin of -1,1C. Negative grass minima at St-Hubert with -2C. Top Tmax: Kleine Brogel 21,4C. Zaventem had 19,0C.
21 Morning fog from 0500 till 0800. All day long blue sky. Elsenborn 4th time frost: -0,4C. Top Tmax: Kleine Brogel 22,5C. Zaventem had 20,2C.
22 Clear day with Cirrus from W during evening. No air frost, Elsenborn 1,3C. Top Tmax: Kleine Brogel 23,3C. Zaventem had 22,0C.
23 Autumn did start today but again a lovely summer day with trailing Cirrus over W coming in late afternoon together + some Ac shields. Top Tmax: Diest 23,9C. Zaventem had 22,9C.
24 Slight rain around 0100. Very cloudy till 1000, breaking to few to scattered Cu Sc. Top Tmax: Kleine Brogel 22,1C. Zaventem had 21,4C.
25 Showers of rain around 0300 & 0500 giving 2 mm. Quite a lot of sun till late afternoon, later increasing cloudiness with even some nice lenticularis clouds. Few drops around 1700, breaking clouds afterwards. Top Tmax: Kleine Brogel 22,5C. Zaventem had 20,3C.
26 Starting sunny, in forenoon scattered Cu Sc, during afternoon consecutive Ci, Cs, As, Ac with a few drops between 1830-1900. Top Tmax: Kleine Brogel 20,5. Zaventem had 18,6C.
27 Sunny start, increasing cloudiness with from 1300-1930 light rain & drizzle giving 3 mm. Top Tmax: Bierset 21,1C. Zaventem had 18,9C.
28 Partly cloudy start with Cu Sc. During afternoon increasing Ci, Cs and As. Around 2200 a moderate rainshower giving 1 mm. Top Tmax: Kleine Brogel 18,6C. Zaventem had 16,8C.
29 Rain, even moderate between 0400-0600 giving 5 mm. Breaking clouds with all day long scattered Cu Sc. TopTmax: Kleine Brogel 17,9C. Zaventem had 16,3C.
30 Increasing high and medium cloudiness during early morning with slight rain between 0730-0830. Remaining Sc overcast with a renewal of intermittent light rain from 1800 on. Top Tmax: Kleine Brogel 15,5C. Zaventem had 14,8C.

Note: all times are Central European Time



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