Snowfall Reports from February 4-5 Storm

Snowfall totals from February 4-5

A widespread 6 to 9 inches of snow occurred over a large portion of central Illinois betwen late morning on February 4, and the afternoon of February 5.  Most of this was during the afternoon and nighttime hours.  Somewhat lower totals occurred from around Galesburg to Bloomington northward, as dry air in the lower levels of the atmosphere kept accumulations to a minimum until late Tuesday evening.  South of I-70, totals of 3 to 6 inches were common, and some reports of freezing rain and freezing drizzle occurred for a time late Tuesday evening, around Olney and Lawrenceville.

THE TOTALS BELOW ARE SEPARATED INTO SNOW...AND ICE AND SLEET
CATEGORIES...THEN BY AMOUNT...AND ARE NOT NECESSARILY THE
FINAL AMOUNT FOR EACH LOCATION.


SNOW REPORTS LISTED BY AMOUNT...

INCHES  LOCATION             COUNTY       TIME
------  -------------------  -----------  -------
  9.60   PANA                 CHRISTIAN    0914 AM
  9.00   4 NW WINDSOR         SHELBY       1105 AM
  9.00   2 SSW FARMER CITY    DE WITT      0700 AM
  8.50   MOUNT ZION           MACON        1220 PM
  8.50   WINDSOR              SHELBY       0600 AM
  8.10   PETERSBURG           MENARD       0825 AM
  8.00   PEKIN                TAZEWELL     0935 AM
  8.00   BISMARCK             VERMILION    0810 AM
  8.00   3 W BISMARCK         VERMILION    0803 AM
  8.00   4 SSW LE ROY         MCLEAN       0700 AM
  8.00   3 SSE HENNING        VERMILION    0700 AM
  7.90   6 SW EL PASO         WOODFORD     0700 AM
  7.80   1 SW JEROME          SANGAMON     1000 AM
  7.70   ST. DAVID            FULTON       0700 AM
  7.50   JACKSONVILLE         MORGAN       1248 PM
  7.50   2 NE CISCO           PIATT        1000 AM
  7.50   3 W KINCAID          CHRISTIAN    0700 AM
  7.50   1 SSW CHAMPAIGN      CHAMPAIGN    0700 AM
  7.50   3 W EDINBURG         CHRISTIAN    0700 AM
  7.50   DANVILLE             VERMILION    0530 AM
  7.30   MATTOON              COLES        0430 AM
  7.20   2 NNW CHAMPAIGN      CHAMPAIGN    0700 AM
  7.00   1 SW WOODSON         MORGAN       0438 PM
  7.00   4 NW PARIS           EDGAR        0700 AM
  7.00   6 NNE PANA           CHRISTIAN    0700 AM
  7.00   RIVERTON             SANGAMON     0944 AM
  7.00   2 WSW CHAMPAIGN      CHAMPAIGN    0700 AM
  7.00   2 S CHAMPAIGN        CHAMPAIGN    0700 AM
  7.00   NEW HOLLAND          LOGAN        0700 AM
  7.00   VIRGINIA             CASS         0700 AM
  7.00   2 ENE PHILO          CHAMPAIGN    0700 AM
  7.00   MOUNT PULASKI        LOGAN        0600 AM
  7.00   BEARDSTOWN           CASS         0500 AM
  6.90   5 NNE ARENZVILLE     CASS         0700 AM
  6.80   SPRINGFIELD          SANGAMON     0940 AM
  6.80   1 SSE URBANA         CHAMPAIGN    0700 AM
  6.80   TUSCOLA              DOUGLAS      0700 AM
  6.80   2 E JACKSONVILLE     MORGAN       0530 AM
  6.70   LACON                MARSHALL     0800 AM
  6.70   2 SSE CHAMPAIGN      CHAMPAIGN    0700 AM
  6.70   OGDEN                CHAMPAIGN    0530 AM
  6.50   URBANA               CHAMPAIGN    0800 AM
  6.50   3 W FARMER CITY      DE WITT      0700 AM
  6.50   4 NNE WHITE HEATH    PIATT        0700 AM
  6.50   1 SSW ST. JOSEPH     CHAMPAIGN    0700 AM
  6.40   CHILLICOTHE          PEORIA       1145 AM
  6.40   1 SE LINCOLN         LOGAN        0700 AM
  6.40   GERMANTOWN HILLS     WOODFORD     0545 AM
  6.30   2 N HOMER            CHAMPAIGN    0905 AM
  6.20   PARIS                EDGAR        1105 AM
  6.20   1 E HEYWORTH         MCLEAN       0800 AM
  6.10   WINCHESTER           SCOTT        0700 AM
  6.10   2 SW EMDEN           LOGAN        0700 AM
  6.10   ALTONA               KNOX         0600 AM
  6.00   SHERMAN              SANGAMON     1033 AM
  6.00   SAVOY                CHAMPAIGN    0700 AM
  6.00   ARTHUR               DOUGLAS      0730 AM
  6.00   BUFFALO              SANGAMON     0700 AM
  6.00   4 W SPRINGFIELD      SANGAMON     0700 AM
  6.00   5 W LINCOLN          LOGAN        0700 AM
  6.00   LINCOLN              LOGAN        0700 AM
  6.00   2 NNE MAHOMET        CHAMPAIGN    0700 AM
  6.00   MURRAYVILLE          MORGAN       0700 AM
  6.00   4 SW BEASON          LOGAN        0700 AM
  5.80   2 SW HANNA CITY      PEORIA       1033 AM
  5.80   BLOOMINGTON          MCLEAN       0724 AM
  5.70   CAPITAL AIRPORT      SANGAMON     0600 AM
  5.60   PEORIA               PEORIA       1211 PM
  5.60   1 ENE LINCOLN        LOGAN        0600 AM
  5.50   3 NE BLOOMINGTON     MCLEAN       0700 AM
  5.50   2 ESE NORMAL         MCLEAN       0700 AM
  5.50   MOWEAQUA             SHELBY       0630 AM
  5.30   HENRY                MARSHALL     0850 AM
  5.30   1 S MANITO           MASON        0805 AM
  5.30   NEOGA                CUMBERLAND   0749 AM
  5.20   3 SW EFFINGHAM       EFFINGHAM    0700 AM
  5.20   2 NNE ARROWSMITH     MCLEAN       0700 AM
  5.10   EFFINGHAM            EFFINGHAM    0825 AM
  5.00   5 NW PEORIA          PEORIA       0800 AM
  5.00   3 S SULLIVAN         MOULTRIE     0700 AM
  5.00   GALESBURG            KNOX         0554 AM
  4.80   KNOXVILLE            KNOX         0805 AM
  4.60   3 W WASHINGTON       TAZEWELL     0850 AM
  4.60   ROBINSON             CRAWFORD     0700 AM
  4.60   GILSON               KNOX         0658 AM
  4.50   CASEY                CLARK        0730 AM
  4.50   EL PASO              WOODFORD     0729 AM
  4.30   2 N GERMANTOWN HILLS WOODFORD     0733 AM
  4.30   1 NW STE. MARIE      JASPER       0712 AM
  4.00   MORTON               TAZEWELL     0800 AM
  4.00   HUTSONVILLE          CRAWFORD     0700 AM
  4.00   FLORA                CLAY         0630 AM
  4.00   PEORIA INTERNATIONAL PEORIA       0600 AM
  3.60   ROANOKE              WOODFORD     0700 AM
  3.60   3 SE DUNLAP          PEORIA       0515 AM
  3.40   HOPEWELL             MARSHALL     0352 AM
  3.30   EUREKA               WOODFORD     0942 AM
  3.00   1 SSE LEXINGTON      MCLEAN       0800 AM
  3.00   2 S OLNEY            RICHLAND     0600 AM
  3.00   6 SSE CLAY CITY      CLAY         0600 AM
  3.00   LAWRENCEVILLE        LAWRENCE     0700 AM
 

A powerful winter storm system impacted central and southeast Illinois on February 4th into the 5th, bringing widespread snow and gusty winds.  The highest snowfall totals were concentrated along the I-72 corridor from Jacksonville...to Decatur...to Danvile, where amounts of 6 to 8 inches were common.  A few locations across eastern Christian County, southern Macon County, and much of Shelby County received up to 9 inches.  The snow was a bit lighter off to the north and south...with areas along and north of a Galesburg to Bloomington-Normal line generally picking up 4 to 5 inches and locations south of the I-70 corridor seeing  3 to 4 inches.

Low pressure over the Texas panhandle during the early morning of February 4th tracked northeastward into western Tennessee by the evening of the 4th, then into western Ohio by the morning of February 5th.  This southern track through the Ohio River Valley is typically a snow-producer across central Illinois and this particular system was no exception.  The airmass initially in place over Illinois was quite cold and dry, as evidenced by morning upper air soundings from both NWS Lincoln and Quad Cities.  Thanks to a dry northeasterly low-level flow ahead of the approaching system, precipitation was slow to develop, particularly along and north of the I-74 corridor.  Light snow first developed around Winchester and Jacksonville by mid-morning on the 4th, then slowly spread northward as the day progressed.  Once the airmass further north saturated from the top-down, snow began to fall north of I-74 by late afternoon into the early evening.  As the low tracked into Tennessee and Kentucky, the initial surge of moisture from the southwest shifted eastward into Indiana, creating a temporary lull in the precipitation.  However, warm/moist air wrapping around the accompanying upper-level wave eventually created a band of deformation zone snow along and west of I-55 during the evening of the 4th.  Widespread light to moderate snow occurred through the evening into the overnight hours, with several smaller bands of enhanced snowfall occurring within this zone as it slowly shifted off to the northeast.  The snow slowly tapered off to flurries by the morning of February 5th as the upper wave passed into the Great Lakes and the surface low pressure reached Ohio.  

Here is a map of snowfall reports received from the SWOP network:

Snowfall Amounts from SWOP weather observers from Feb 4-5th

 Feb 4-5th Snowfall across IL and nearby states



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