National Weather Service United States Department of Commerce

Significant Severe Weather Outbreak Likely Today

A significant severe thunderstorm outbreak is likely for portions of the Midwest this afternoon and evening, especially from eastern Iowa into northern and central Illinois. The threats include tornadoes, a few which may be significant, large to very large hail, and damaging winds. A powerful system near the Central Plains will lift north and clash with a warm and humid air mass over the region. Read More >

Notes on Non-Zero Number in First Digit of 6-Digit SAME Number

                                               * RE: column 3

If subdivisions are employed, there may be from 2 to 9 of them.

     In the case of the maximum of nine subdivisions, the following assignments
     would be used in the first digit:

                               1 = Northwest 1/9  
                               2 = North Central 1/9  
                               3 = Northeast 1/9
                               4 = West Central 1/9
                               5 = Central 1/9
                               6 = East Central 1/9
                               7 = Southwest 1/9
                               8 = South Central 1/9
                               9 = Southeast 1/9

     For less than 9 subdivisions, the following numbering convention is
     normally used depending on the desired size and/or orientation of the area
     such as from Northwest to Southeast, North to South, West to East, or
     Northeast to Southwest:

                               1 = Northwest 1/3, 1/2, or 2/3 as appropriate
                               2 = North 1/3, 1/2, or 2/3 as appropriate
                               3 = Northeast 1/3, 1/2, or 2/3 as appropriate
                               4 = West 1/3, 1/2, or 2/3 as appropriate
                               5 = Central 1/3 (or as appropriate)
                               6 = East 1/3 or 1/2, or 2/3 as appropriate
                               7 = Southwest 1/3, 1/2, or 2/3 as appropriate
                               8 = South 1/3, 1/2, or 2/3 as appropriate
                               9 = Southeast 1/3, 1/2, or 2/3 as appropriate

Some examples of subdivided county patterns

 

in 2 parts)          (in 3 parts)        (in 4 parts)
COUNTY     SAME #     COUNTY    SAME #    COUNTY           SAME #

APPLE-NW   1SSNNN     JUICE-N   2SSNNN    PEAR-NW          1SSNNN
APPLE-SE   9SSNNN     JUICE-Cen 5SSNNN    PEAR-NE          3SSNNN
RAISIN-N   2SSNNN     JUICE-S   8SSNNN    PEAR-SW          7SSNNN
RAISIN-S   8SSNNN     GRAPE-W   4SSNNN    PEAR-SE          9SSNNN
BANANA-W   4SSNNN     GRAPE-Cen 5SSNNN    BROCCOLI-NW      1SSNNN
BANANA-E   6SSNNN     GRAPE-E   6SSNNN    BROCCOLI-WCen    4SSNNN
CORN-NE    3SSNNN     NUT-NE    3SSNNN    BROCCOLI-SW      7SSNNN
CORN-SW    7SSNNN     NUT-Cen   5SSNNN    BROCCOLI-E       6SSNNN
RICE-NW1/3 1SSNNN     NUT-SW    7SSNNN    CAULIFLOWER-N    2SSNNN
RICE-SE2/3 9SSNNN     PEA-NW    1SSNNN    CAULIFLOWER-SW   7SSNNN
BEET-NE2/3 3SSNNN     PEA-Cen   5SSNNN    CAULIFLOWER-SCen 8SSNNN
BEET-SW1/3 7SSNNN     PEA-SE    9SSNNN    CAULIFLOWER-SE   9SSNNN

(in 5 parts)               (in 6 parts)        (in 7 parts)
COUNTY         SAME #     COUNTY      SAME #   COUNTY      SAME#
ARTICHOKE-W    4SSNNN     LEGUME-NW   1SSNNN   BARLEY-NW   1SSNNN
ARTICHOKE-Ncen 2SSNNN     LEGUME-NCen 2SSNNN   BARLEY-Ncen 2SSNNN
ARTICHOKE-Cen  5SSNNN     LEGUME-NE   3SSNNN   BARLEY-NE   3SSNNN
ARTICHOKE-SCen 8SSNNN     LEGUME-SW   7SSNNN   BARLEY-Wcen 4SSNNN
ARTICHOKE-E    6SSNNN     LEGUME-SCen 8SSNNN   BARLEY-Cen  5SSNNN
                          LEGUME-SE   9SSNNN   BARLEY-ECen 6SSNNN
                                               BARLEY-S1/3 8SSNNN