National Weather Service United States Department of Commerce

Widespread Summer Heat; Enhanced Severe Weather

A large ridge of high pressure continues to deliver summer heat w/ humidity in several sections of the country. Excessive heat warnings and heat advisories are in effect across the Desert Southwest, south-central Plains, Mid to Lower Mississippi Valley and a small part of the Mid-Atlantic. Meanwhile, an enhanced risk of organized severe thunderstorms is possible from Iowa to Illinois and Indiana. Read More >

January 16, 2009: Cold Air Outbreak

 

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
830 AM CST FRI JAN 16 2009

...PRELIMINARY LOW TEMPERATURES REPORTED ACROSS NORTHERN ILLINOIS 
AND NORTHWEST INDIANA THIS MORNING...

THE FOLLOWING ARE SELECT COOPERATIVE OBSERVER AND AIRPORT 
OBSERVATIONS FOR THIS MORNING. SOME COOPERATIVE OBSERVER REPORTING 
END TIMES ARE BETWEEN 6 AND 7 AM AND THEREFORE IT IS POSSIBLE THAT 
TEMPERATURES MAY HAVE DROPPED A DEGREE OR TWO SINCE THEIR 
OBSERVATION TIME. 

                LOW TEMPERATURE
LOCATION        ENDING 6-8 AM      

ILLINOIS

DIXON               -32
POLO                -32
AURORA AIRPORT      -31 (SUGAR GROVE)
ROCHELLE            -28
SHABBONA            -26
ROCKFORD AIRPORT    -25 AT 0651 (NEW RECORD)
ROMEOVILLE IL NWS   -24
MARSEILLES          -23
BARRINGTON          -23
MCHENRY             -23
PAW PAW             -22 
WEST CHICAGO        -22
BATAVIA             -22
ST CHARLES          -22
MUNDELEIN           -22
ELGIN               -21
JOLIET              -21
MORRIS              -20
PARK FOREST         -19
LISLE MORTON ARB    -19
PIPER CITY          -19
STREATOR            -18
CHICAGO OHARE       -18 AT 0722
MIDWAY 3SW          -17
DWIGHT              -18
WAUKEGAN            -17
WHEELING            -15
CHICAGO LAKEFRONT   -11

INDIANA

WANATAH             -24
VALPARAISO AIRPORT  -20
VALPARAISO          -19

$$

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE CHICAGO IL
449 PM CST FRI JAN 16 2009

...LOWEST WIND CHILL READINGS FROM RECENT COLD SNAP...

HERE ARE THE LOWEST HOURLY WIND CHILL READINGS RECORDED ACROSS THE 
AREA DURING THE RECENT ARCTIC COLD SNAP:

WIND    TIME    DAY     LOCATION
CHILL

-51     7 AM    01/16   AURORA SUGAR GROVE AIRPORT
-41     1 AM    01/16   VALPARAISO
-38     4 AM    01/16   WEST CHICAGO DUPAGE EXECUTIVE AIRPORT
-36     8 AM    01/16   WAUKEGAN
-35     7 AM    01/15   ROCKFORD AIRPORT
-35     7 AM    01/16   CHICAGO MIDWAY AIRPORT
-34     6 AM    01/16   CHICAGO O'HARE INTERNATIONAL AIRPORT
-32     7 AM    01/16   WHEELING CHICAGO EXECUTIVE AIRPORT

THE FOLLOWING OBSERVATIONS ARE FROM AREA AWOS LOCATIONS...WHICH ARE 
NOT QUALITY CONTROLLED BY THE NATIONAL WEATHER SERVICE.

WIND    TIME    DAY     LOCATION
CHILL

-53     1 AM    01/16   ROCHELLE
-42     2 AM    01/16   DEKALB 
-42     8 AM    01/15   STERLING
-40     8 AM    01/15   PERU
-39     8 AM    01/16   KANKAKEE
-39     4 AM    01/15   MORRIS
-38     2 AM    01/16   LOCKPORT
-36    11 PM    01/15   RANTOUL
-36     3 AM    01/16   LANSING
-35     4 AM    01/16   FREEPORT
-33     7 AM    01/16   PONTIAC
-32     2 AM    01/16   JOLIET

$$