Weather pictures & report of November 29-30

 

Snow along cold occlusion introducing a five day coldwave.


Synopsis: at 500 hPa sharpening upper trough crossed our area. Related occlusion produced some light snow and was followed by very cold continental air  introducing a 5 day cold wave. All pictures were taken at Kampenhout (central Belgium). Hours in local time (CET). 

 

Surface analysis of November 29 2010 at 1900 CET. Two cccluded frontal systems entering the Low Countries and moving west-southwestwards. (Source chart: Belgocontrol)

 
Loop of 22 surface analyses (from Nov. 29 1600 CET till Nov. 30 1300 CET) with weather plots. (Source: meteocentre.com)

 
Upper air analysis 500 hPa of November 30 2010 at 0100 CET. Axis of sharpening upper trough (containing severeal cold pools) positioned overhead the Low Countries. (Source chart: DWD via wetter3)

 
Upper air analysis 850 hPa of November 30 2010 at 0100 CET. The minus 9 degrees is overhead the Low Countries. (Source chart: DWD via wetter3)

 
Loop of forecasted soundings for Brussels of November 29 2010 between 0830-1900 CET. Temperature over the entire layer is negative and from 1600 CET onwards also saturated. (Source: RASP)

 
Another loop of forecasted soundings for Brussels between November 29 0100 CET and November 30 1900 CET. (Source: weatheronline.co.uk)

 
29/11/2010 1600-2230 CET. Satellite loop in the infra-red channel. The stratiform layer entering the Benelux via the east. (Source sat picture: Eumetsat via Sat24.com)

 

Radar loop (reflectivity in dBZ) of November 29 1300 CET and December 30 0400 CET. A rather weak precipitation belt crossing the area from east to west. (Source radar picture: Belgocontrol)

 

Some metars (hours in UTC) of Brussels Airport (EBBR). Translation: copy paste each obs via metar-decoder

EBBR 291250Z 04004KT 3800 BR FEW004 BKN008 M02/M04 Q1008 NOSIG
EBBR 291320Z VRB02KT 2000 -SG FEW004 BKN007 M02/M04 Q1008 TEMPO 0900
EBBR 291350Z 04003KT 010V070 2000 -SG SCT006 BKN009 M02/M04 Q1008 TEMPO 0900
EBBR 291420Z VRB02KT 4000 -SG BKN008 M02/M04 Q1008 TEMPO 0900
EBBR 291450Z VRB02KT 2500 R25L/1000V1500N R25R/P2000N R02/1100VP2000D -SG FEW002 BKN008 BKN010 M03/M04 Q1009 TEMPO 0900
EBBR 291520Z 10003KT 060V130 3500 BR SCT009 BKN011 M02/M04 Q1009 TEMPO 0900 -SG
EBBR 291550Z 08003KT 050V120 3500 -SG SCT009 BKN011 M02/M04 Q1009 TEMPO 1200
EBBR 291620Z 02001KT 3700 -SN SCT009 BKN014 BKN022 M02/M04 Q1009 TEMPO 1200
EBBR 291650Z 04002KT 3800 -SN SCT014 BKN024 M02/M04 Q1009 TEMPO 0900
EBBR 291720Z 04002KT 3000 -SN FEW011 BKN025 M02/M04 Q1010 TEMPO 1200
EBBR 291750Z 05003KT 3700 -SN FEW008 SCT025 M02/M04 Q1010 TEMPO 1200
EBBR 291820Z 04003KT 2200 -SN SCT006 BKN010 M02/M03 Q1010 R25L/590157 R02/590253 R25R/590261 TEMPO 1200 BKN005
EBBR 291850Z 05004KT 1800 -SN SCT005 BKN010 M03/M03 Q1010 R25L/590157 R02/590253 R25R/590261 TEMPO 1200 BKN005
EBBR 291920Z 04002KT 1400 R25L/P2000N R25R/P2000N R02/P2000N -SN SCT005 BKN008 M03/M03 Q1010 R07R/590157 R02/590253 R07L/590261 TEMPO 1200 BKN005
EBBR 291950Z 03003KT 1400 R25L/P2000N R25R/P2000N R02/P2000N -SN SCT004 BKN007 M03/M03 Q1011 R07R/590157 R02/590253 R07L/590261 TEMPO 1200 BKN005
EBBR 292020Z 04003KT 1800 -SN SCT004 BKN007 M03/M04 Q1011 R07R/590157 R02/590253 R07L/590261 TEMPO 1200 BKN005
EBBR 292050Z 04002KT 1800 -SN SCT004 BKN007 M03/M04 Q1011 R07R/590157 R02/590253 R07L/590261 TEMPO 1200 BKN005
EBBR 292120Z 03001KT 1800 -SN SCT004 BKN007 M03/M04 Q1011 R07R/590157 R02/590253 R07L/590261 TEMPO 1200 BKN005
EBBR 292150Z 00000KT 1800 -SN BR SCT004 BKN007 M03/M04 Q1011 R07R/590157 R02/590253 R07L/590261 TEMPO 1200 BKN005
EBBR 292220Z 02001KT 1500 -SN BR SCT004 BKN006 M03/M04 Q1012 R07R/590157 R02/590253 R07L/590261 TEMPO 1200 BKN005
EBBR 292250Z 00000KT 1500 -SN BR SCT004 BKN006 M03/M04 Q1012 R07R/590157 R02/590253 R07L/590261 TEMPO 1200 BKN005
EBBR 292320Z 00000KT 1500 -SN BR BKN005 M03/M03 Q1012 R07R/590157 R02/590253 R07L/590261 TEMPO 1200 BKN005
EBBR 292350Z 00000KT 1500 -SN BR BKN005 M03/M03 Q1012 R07R/590157 R02/590253 R07L/590261 TEMPO 1200 BKN005
EBBR 300020Z 00000KT 1500 -SN BR BKN005 M03/M03 Q1012 R07R/590157 R02/590253 R07L/590261 TEMPO 1200 BKN005
EBBR 300050Z 05001KT 1300 R25L/P2000N R25R/P2000N R02/P2000N -SN BR BKN005 M03/M03 Q1012 R25L/240156 R02/540438 R25R/440258 NOSIG
EBBR 300120Z 05001KT 1300 R25L/P2000N R25R/P2000N R02/P2000N -SN BR BKN005 M02/M03 Q1012 R25L/240156 R02/540438 R25R/440258 NOSIG
EBBR 300150Z 05001KT 1200 R25L/P2000N R25R/P2000N R02/P2000N -SN BR BKN005 M02/M03 Q1012 R25L/240156 R02/540438 R25R/440258 NOSIG
EBBR 300220Z 05001KT 1200 R25L/P2000N R25R/P2000N R02/P2000N -SN BR BKN005 M02/M03 Q1012 R25L/240156 R02/540438 R25R/440258 NOSIG
EBBR 300250Z 08001KT 1200 R25L/P2000N R25R/P2000N R02/P2000N -SN BR BKN006 M02/M03 Q1012 R25L/240156 R02/540438 R25R/440258 NOSIG
EBBR 300320Z 06001KT 1200 R25L/P2000N R25R/P2000N R02/P2000N -SN BR BKN005 M02/M03 Q1012 R25L/240156 R02/540438 R25R/440258 NOSIG
EBBR 300350Z 06001KT 1200 R25L/P2000N R25R/P2000N R02/P2000N -SN BR BKN004 M02/M03 Q1012 R07R/240157 R02/240159 R25R/540349 NOSIG
EBBR 300420Z 06001KT 1200 R25L/P2000N R25R/P2000N R02/P2000N -SN BR BKN004 M02/M03 Q1012 R07R/240157 R02/240159 R25R/540349 NOSIG
EBBR 300450Z 07003KT 1800 -SN BR SCT003 BKN006 M02/M03 Q1012 R07R/240157 R02/240159 R25R/540349 NOSIG
EBBR 300520Z 07003KT 1800 -SN BR SCT003 BKN006 M02/M03 Q1012 R25L/240154 R02/240154 R25R/540443 NOSIG
EBBR 300550Z 06004KT 2000 -SN BR SCT004 BKN006 M02/M03 Q1012 R25L/240154 R02/240154 R25R/540443 NOSIG
EBBR 300620Z 06004KT 1700 -SN BR SCT005 BKN006 M02/M03 Q1012 R25L/240154 R02/240154 R25R/540443 NOSIG
EBBR 300650Z 07004KT 2200 -SN BR FEW004 SCT005 BKN007 M02/M03 Q1012 R25L/240154 R02/240154 R25R/540443 NOSIG
EBBR 300720Z 06004KT 1500 -SN BR SCT003 BKN005 M02/M03 Q1012 R07R/240059 R02/540051 R07L/545237 NOSIG
EBBR 300750Z 06005KT 1600 -SN BR SCT004 BKN007 M02/M03 Q1012 R07R/240059 R02/540051 R07L/545237 NOSIG
EBBR 300820Z 06006KT 1800 -SN BR BKN006 BKN008 M02/M03 Q1012 R07R/240059 R02/540051 R07L/545237 NOSIG
EBBR 300850Z 07006KT 2200 -SG BR FEW004 SCT007 BKN010 M02/M03 Q1012 R07R/240059 R02/540051 R07L/545237 NOSIG
EBBR 300920Z 07006KT 3000 -SG BR FEW006 BKN008 M02/M03 Q1012 R07R/240059 R02/540051 R07L/545237 BECMG 5000
EBBR 300950Z 08007KT 4000 -SG BR SCT008 BKN011 M01/M03 Q1012 R07R/240059 R02/540051 R07L/545237 BECMG 5000
EBBR 301020Z 08006KT 3700 -SG BR BKN008 M01/M03 Q1012 R07R/240059 R02/540051 R07L/545237 NOSIG EBBR 301050Z 08007KT 4500 -SG BR SCT010 BKN013 M01/M03 Q1012 R07R/250067 R02/620565 R07L/690359 NOSIG
EBBR 301120Z 08006KT 6000 BKN012 M01/M03 Q1012 R07R/250067 R02/620565 R07L/690359 NOSIG
EBBR 301150Z 08006KT 7000 -SG BKN011 M01/M04 Q1012 R07R/250067 R02/620565 R07L/690359 NOSIG
EBBR 301220Z 07006KT 7000 SCT012 BKN020 M01/M03 Q1011 R07R/250067 R02/620565 R07L/690359 NOSIG EBBR 301250Z 06005KT 7000 SCT013 BKN040 M01/M03 Q1011 R07R/290072 R02/620570 R07L/620575 NOSIG EBBR 301320Z 06008KT 8000 SCT009 BKN013 M01/M03 Q1011 R07R/290072 R02/620570 R07L/620575 NOSIG
 

 

29/11/2010. Snow height in cm taken from the synops of 0600 & 0900 UTC.

 
30/11/2010 0815. Proof of date: first significant snow cover the the season.

 
30/11/2010. Proof of 2 cm snow.

 
30/11/2010 0837 W.

 
30/11/2010 0839.

 

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