Winter Storm: February 12/13, 2007

Winter Storm Pushes Across the Central Plains

Snowfall Reports Over One Foot Reported in NE Kansas

A strong low pressure system began to slide across the Central Plains during the afternoon of February 12th.  Rain was the initial type of precipitation that fell during the afternoon hours across the NE corner of Kansas.  High temperatures the 12th were able to climb a few degrees above the freezing mark, thanks in part to warm southerly flow out ahead of the low pressure system.   Cold arctic air on the north side of the low began to infiltrate the Central Plains by evening, as the system slid to the east.  This forced temperatures to plummet. The rain switched briefly over to sleet during the early evening, and eventually turned to all snow across much of the NE corner of Kansas around 8pm.

As of 8am Tuesday, February 13th, the snow had ended across Kansas.  A few flurries continued to fall in the far NE corner of the state, but no measurable amounts are expected.  The following graphic is a preliminary analysis of snowfall reports received as of 8am.  Reports were received from Automated Weather Stations, Cooperative Observers, and Trained Storm Spotters.  The highest amount measured was 14.0" by a trained spotter just west of the town of Beattie in Marshall County.

(Click on Image for Larger View)

 

A general summary of snowfall totals was also issued this morning.  Data for this text product was gathered by Law Enforcement Officers and County Officials.

ANDERSON COUNTY...1-2 INCHES.
BROWN COUNTY...8 INCHES WITH LOCALLY HIGHER AMOUNTS.
CLAY COUNTY...2 TO 3 INCHES.
CLOUD COUNTY...8 TO 10 INCHES.
DOUGLAS COUNTY...1 TO 4 INCHES.
FRANKLIN COUNTY...AROUND 2 INCHES.
JACKSON COUNTY...5 TO 6 INCHES.
LYON COUNTY...1 TO 2 INCHES.
MORRIS COUNTY...1 TO 4 INCHES.
NEMAHA COUNTY...8 INCHES WITH LOCALLY HIGHER AMOUNTS.
OSAGE COUNTY...3 INCHES NEAR LYNDON.
OTTAWA COUNTY...2 INCHES.
POTTAWATOMIE COUNTY...5 TO 6 INCHES.
REPUBLIC COUNTY...5 TO 7 INCHES.
SHAWNEE COUNTY...1 TO 3 INCHES.
WASHINGTON COUNTY...5 INCHES.

The Regional Temperature and Preciptiation Table issued this morning by the NWS at Topeka has a tabular listing of Automated Station and Cooperative Observer reports. 

MAX/MIN TEMPERATURE AND PRECIPITATION TABLE FOR
NORTH CENTRAL...NORTHEAST AND EAST CENTRAL KANSAS
NATIONAL WEATHER SERVICE TOPEKA KS
920 AM CST TUE FEB 13 2007
.BR TOP 0213 C DH00/TX/DH06/TAIRZP/PP/SF/SD
:
: VALUES REPRESENT YESTERDAYS HIGHS...LOW OVER THE LAST 12 HOURS
: AND PRECIPITATION OVER THE LAST 24 HRS
:                                                       SNOW   SNOW
:                                   HIGH   LOW    PCPN  FALL   DEPTH
TOP  : TOPEKA BILLARD ARPT      :     37 /  26 /  0.63 /  1.8 / 2
CNK  : CONCORDIA BLOSSER ARPT   :     34 /  15 /  0.32 /  1.0 / 5
FOE  : TOPEKA FORBES FIELD ARPT :     37 /  25 /  0.57 /      /
LWC  : LAWRENCE MUNI ARPT       :     37 /  26 /  0.66 /      /
MHK  : MANHATTAN RGNL ARPT      :     36 /  22 /  0.62 /      /
EMP  : EMPORIA MUNI ARPT        :     36 /  26 /     M /      /
.END
:
.BR TOP 0213 C DH07/TX/TN/PP/SF/SD
:
: COOPERATIVE OBSERVATIONS
: VALUES ARE FOR THE PREVIOUS 24 HOURS
:
ABLK1: ABILENE          *       :     35 /  17 /  0.75 /  1.0 / 1
CENK1: CENTRALIA        *       :     36 /  15 /  0.92 /  9.0 / 9
CCRK1: CLAY CENTER      *       :     34 /  29 /  0.76 /  3.0 / 3
CONK1: CONCORDIA 1 W    *       :     33 /  14 /  0.75 /  7.0 / 7
CNGK1: COUNCIL GROVE LK *       :     36 /  19 /  0.40 /  1.0 / 1
CTLK1: COURTLAND        *       :     33 /  11 /  0.86 /  6.0 / 6
EPRK1: EMPORIA 3 NW     *       :     35 /  22 /  0.60 /      /
ESKK1: ESKRIDGE         *       :     34 /  19 /  0.59 /  2.5 / 3
GARK1: GARNETT 1 E      *       :     36 /  25 /  0.54 /  0.5 / 2
HERK1: HERINGTON        *       :     35 /  18 /  0.58 /  1.0 /
MHTK1: MANHATTAN KSU    *       :     40 /  18 /  0.65 /  2.0 / 2
MNPK1: MINNEAPOLIS      *       :     34 /  16 /  0.67 /  3.0 / 3
OTTK1: OTTAWA           *       :     36 /  32 /  0.55 /  1.0 / 1
PRRK1: PERRY LAKE       *       :     36 /  21 /  0.51 /  3.0 / 3
PLKK1: POMONA LAKE      *       :     35 /  22 /  0.75 /      /
VLYK1: VALLEY FALLS     *       :     36 /  21 /  0.58 /  3.7 / 3
WAMK1: WAMEGO 4 W       *       :     35 /  18 /  0.73 /  3.6 / 4
WMAK1: WASHINGTON       *       :     34 /  27 /  1.12 /  5.0 / 5
AGNK1: AGENDA           *       :        /     /  0.70 /  5.0 / 5
ALVK1: ALTA VISTA       *       :        /     /  0.63 /  2.5 / 3
AUBK1: AUBURN 1 N       *       :        /     /  0.65 /  1.5 / 2
AXTK1: AXTELL           *       :        /     /  0.90 /      / 9
BEAK1: BEATTIE 2 NNW    *       :        /     /  0.52 /  4.0 / 4
BRPK1: BLUE RAPIDS      *       :        /     /  0.62 /  0.3 / M
BRMK1: BREMEN 1 E       *       :        /     /  1.28 /  7.0 / 7
CNYK1: COLONY           *       :        /     /  0.41 /  1.0 / 1
DIAK1: DIAMOND SPRINGS  *       :        /     /  0.48 /  0.5 /
DLPK1: DUNLAP 2 N       *       :        /     /  0.38 /  0.2 /
ETPK1: ENTERPRISE       *       :        /     /  0.60 /  2.0 / 2
FCTK1: FACT             *       :        /     /  0.47 /  4.0 / 4
FTRK1: FT RILEY         *       :        /     /  0.69 /  2.0 /
GLCK1: GLASCO           *       :        /     /  0.62 /  3.8 / 4
HADK1: HADDAM           *       :        /     /  1.34 /  7.0 / 7
HIAK1: HIAWATHA         *       :        /     /  0.20 /  5.0 / 5
LCTK1: LECOMPTON        *       :        /     /  1.30 /  2.0 / 2
MCFK1: MC FARLAND       *       :        /     /  0.82 /  3.1 / 3
MLLK1: MILLER           *       :        /     /  0.45 /  1.0 / 1
MLTK1: MILTONVALE       *       :        /     /  0.81 /  6.0 / 6
NEWK1: NORWAY           *       :        /     /  0.45 /  6.0 / 6
PRLK1: PARALLEL         *       :        /     /  1.05 /  5.5 / 6
RDHK1: RANDOLPH 4 WNW   *       :        /     /  0.79 /  3.8 / 4
TESK1: TESCOTT          *       :        /     /  0.58 /  1.5 / 2
WTCK1: WHITE CITY       *       :        /     /  0.64 /  3.0 / 3
WILK1: WILSEY 1 NNE     *       :        /     /  0.30 /  1.0 /
.END

The PCPN column in the Table represents the liquid equivalent of precipitation that fell over the course of the 24 hour period.  This includes the amount of rain that fell during the afternoon of the 12th, as well as the liquid equivalent of snow that fell during the evening and overnight. The liquid equivalent of snow is measured by melting a sample of the snow, and measuring the amount of liquid water present in the sample.  A few of our observers only reported snowfall, and not the liquid equivalent, which accounts for some of the variability present on the graphic.

(Click on Image for a Larger View)

Wind speeds of 15 to 25 mph, with gusts up to 35 mph, also lead to the blowing and drifting of some of the new fallen snow.  Drifts up to 2 to 4 feet were reported at sites that had some of the higher snowfall totals.



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