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1/7-1/8 Brief, Intense Cold Shot


Hoosier

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ILLINOIS REGIONAL WEATHER ROUNDUP  NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL  1000 PM CST WED JAN 07 2015    NOTE: "FAIR" INDICATES FEW OR NO CLOUDS BELOW 12,000 FEET WITH NO  SIGNIFICANT WEATHER AND/OR S TO VISIBILITY.    * THESE STATIONS ARE NOT UNDER NWS QUALITY CONTROL. THEY ALSO MAY NOT    REPORT WEATHER SUCH AS PRECIPITATION OR FOG.    ILZ001-002-007-009-015-016-024-080500-  NORTHWEST ILLINOIS      CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS  MOLINE         PTCLDY    -8 -14  74 W7        30.78F WCI -23            STERLING*      PTCLDY    -8 -15  71 W9        30.73F WCI -25            SAVANNA*       PTCLDY    -6 -14  68 W5        30.75F WCI -17            

 

 

ILZ003-004-008-010-011-017-018-080500-  

NORTH CENTRAL ILLINOIS  

 

CITY SKY/WX TMP DP RH WIND PRES REMARKS  

ROCKFORD MOCLDY -7 -17 62 W9 30.71F WCI -24  

FREEPORT* PTCLDY -9 -17 69 W8 30.71F WCI -25  

ROCHELLE* MOCLDY -8 -15 74 W13 30.71F WCI -29  

DE KALB* MOCLDY -8 -15 70 W10 30.67F WCI -26  

PERU* PTCLDY -6 -13 71 W14 30.76F WCI -26  

 

 

ILZ005-006-012>014-019>023-080500-  

NORTHEAST ILLINOIS  

 

CITY SKY/WX TMP DP RH WIND PRES REMARKS  

CHICAGO-OHARE PTCLDY -4 -14 62 W10 30.67F WCI -21  

CHICAGO-MIDWAY CLEAR -2 -13 59 W9 30.69F WCI -18  

AURORA MOCLDY -7 -16 65 W12 30.71F WCI -26  

LANSING* PTCLDY -4 -13 66 W10 30.71F WCI -21  

JOLIET* MOCLDY -7 -14 71 W7 30.73F WCI -21  

WAUKEGAN PTCLDY -5 -16 59 W8 30.63F WCI -20  

DUPAGE AIRPORT PTCLDY -5 -15 62 W12 30.68F WCI -23  

KANKAKEE* PTCLDY -5 -12 71 W8 30.74F WCI -20  

WHEELING PTCLDY -4 -15 59 W8 30.68F WCI -19  

MORRIS* MOCLDY -8 -13 77 W10 30.74F WCI -26  

ROMEOVILLE* MOCLDY -7 -14 69 W9 30.71F WCI -24  

NORTHERLY ISL N/A 0 -10 63 W16 N/A WCI -20

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Disregarding a couple obvious erroneous readings, the earlier barometer reading of 30.86" at LAF is the highest reading since 1989 and tied for the fourth highest on record since 1973

 

30.92" - February 12, 1981

30.91" - February 16-17, 1989

30.88" - February 13, 1981

30.86" -  January 8, 1986 ; January 7, 2015

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DTW is -1F, wind chill -22F, under a thick Michigan overcast. Thats when you know its COLD. Imagine if it was clear or even partially clear.

lol when I posted that I was looking out my window to the north and it was a darkish gray, but then when I looked out a different window facing the south I noticed it was  more of a cirrus overcast, not so much a thick one. DTW was partly cloudy at midnight then went to cloudy with some light snow, the temp rose from 2F at midnight to 7F at 4am, and has since dropped 8 full degrees since 4am under the thin overcast.

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lol when I posted that I was looking out my window to the north and it was a darkish gray, but then when I looked out a different window facing the south I noticed it was more of a cirrus overcast, not so much a thick one. DTW was partly cloudy at midnight then went to cloudy with some light snow, the temp rose from 2F at midnight to 7F at 4am, and has since dropped 8 full degrees since 4am under the thin overcast.

Same thing happened here. Rose up to 8°F after midnight and has now dropped all the way down to -1°F now that its fully daylight.

DTW was at -2°F at 9am, when the temp keeps dropping after sunrise you know that airmass is frigid.

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