Snowfall warning for: City of Toronto
Issued at 5:30 PM EST WEDNESDAY 21 NOVEMBER 2007
..10 TO 20 CENTIMETRES OF SNOW LIKELY BY THURSDAY NIGHT..
A LOW PRESSURE AREA OVER SOUTHERN ILLINOIS WILL BRING THE FIRST WINTER STORM OF THE SEASON TONIGHT AND THURSDAY. WHILE RAIN HEAVY AT TIMES IS FALLING OVER MOST OF SOUTHERN ONTARIO THERE ARE SIGNS THAT A CHANGE IS IMMINENT. AN OFF DUTY ENVIRONMENT CANADA METEOROLOGIST REPORTED WET SNOW ON HIGHWAY 400 SOUTH OF BARRIE AROUND 5.15 PM. THIS IS THE FIRST SIGN THAT A CHANGEOVER TO SNOW IS STARTING TO OCCUR. AS THE TEMPERATURE FALLS TO NEAR FREEZING THE RAIN WILL QUICKLY CHANGE OVER TO WET SNOW AND ICE PELLETS THIS EVENING AND THEN SNOW HEAVY AT TIMES LATER TONIGHT. NEAR 10 CENTIMETRES OF SNOW IS EXPECTED TO FALL TONIGHT WITH AN ADDITIONAL 10 CENTIMETRES TO FOLLOW ON THURSDAY. HIGHER SNOW AMOUNTS ARE EXPECTED TO FALL OVER HIGHER TERRAIN. REGIONS ACROSS EASTERN ONTARIO INCLUDING OTTAWA HAVE ALREADY RECEIVED SNOW FROM A PREVIOUS DISTURBANCE AND WILL CONTINUE TO SEE SNOW FALL TONIGHT AND INTO THURSDAY. TOTAL SNOWFALL AMOUNTS NEAR 15 CENTIMETRES BY THURSDAY NIGHT ARE POSSIBLE AS THE WINTER STORM SLOWLY MOVES EAST ACROSS THE LOWER LAKES TONIGHT INTO NEW ENGLAND BY THURSDAY NIGHT. THE GREATER TORONTO AREA WILL BE VERY CLOSE TO THE SOUTHERN EDGE OF THE HEAVY SNOW BUT IS STILL EXPECTED TO RECEIVE SIGNIFICANT AMOUNTS OF SNOW MIXED WITH ICE PELLETS. ACTUAL TOTAL SNOWFALL AMOUNTS WILL DEPEND ON HOW LONG IT WILL TAKE FOR THE RAIN AND ICE PELLETS TO TURN OVER TO SNOW. LATEST INDICATIONS SHOW 5 TO 10 CM OF SNOW AND ICE PELLETS BY THURSDAY MORNING IN GREATER TORONTO AREA FOLLOWED BY ADDITIONAL 5 TO 10 CENTIMETRES OF ALL SNOW THURSDAY. REGIONS CLOSE TO THE LAKE MAY SEE LESSER AMOUNTS DUE TO SLIGHTLY HIGHER TEMPERATURES. TRAVELLERS SHOULD BE PREPARED FOR SIGNIFICANT DETERIORATION IN DRIVING CONDITIONS WITH HAZARDOUS WINTER DRIVING CONDITIONS LIKELY OVERNIGHT AND THURSDAY. VERY LOW VISIBILITY AT TIMES IN HEAVY SNOW IS POSSIBLE. FOR FURTHER DETAIL OVER THE REST OF SOUTHERN ONTARIO PLEASE READ THE SPECIAL WEATHER STATEMENT RELEASED BY ENVIRONMENT CANADA.
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