Chicago Area Cold

Temperatures went below zero across most of the Chicago area this morning:

OFFICIAL AND SUPPLEMENTARY NWS OBSERVATION SITES
------------------------------------------------
AURORA/SUGAR GROVE:  -13
ROCHELLE:            -13
DUPAGE AIRPORT:      -10
ROCKFORD AIRPORT:     -9
WAUKEGAN AIRPORT:     -7
CHICAGO-O`HARE:       -6
JOLIET:               -5
KANKAKEE:             -5
LANSING:              -5
NWS ROMEOVILLE:       -4
WHEELING/CHI EXEC:    -4
VALPARAISO IN:        -3
PONTIAC:              -2
PERU:                 -1
CHICAGO-MIDWAY:        1
RENSSELAER:            1
CHICAGO-NORTHERLY ISL: 3

The -6 at O'Hare Airport was the coldest this early in December since 1978. The -6 was surprising because NAM MOS had been predicting 4 yesterday.

In Australia, significant snow fell on December 5th in New South Wales.