Storm Front Finally Approaches

Friday, October 6th:  It was another warm and humid day Friday ahead of the approaching upper trough to our west.  Cloudy skies with dribbles and spits of rain in the morning gradually became partly cloudy to mostly sunny in the afternoon.  The high at the Lawrence Airport was 79 and the low 68 with high humidity continuing.  The dew point was 71 degrees at the maximum temperature of 79 at about 5:15 PM.  The average dew point for the day at my residence was 68.5 degrees.

The Lawrence Airport recorded 19 hundredths of an inch of rain in the 24 hours ending at 7 PM, most of which fell between midnight and 2 AM, followed by dribbles and spits between 7 and 8 AM.   I recorded 0.24 inches at my residence.  The two-day (and monthly) total at the airport was up to 34 hundredths with 0.51 inches the two day total at my residence in southwest Lawrence.

Elsewhere in Kansas, amounts in the 24 hours ending at 7 PM ranged from nothing at several spots up to 0.55 inches at Parsons, in far southeast Kansas.  Winfield recorded 0.41 inches and in third place today was the Topeka Airport with 0.36 inches.



Concurrent radar image (5:44 PM CDT) to satellite image above out of Dodge City showing an intense storm with tornado signature and strong outflow (blue arcs) approaching Great Bend.


At 6:46 PM Friday:  The sun has set behind the anvil tops of a line of thunderstorms developing to the distant west, as seen from the Clinton Lake Dam.



The Wichita Radar image 2 minutes after the above snapshot shows that the storms extended from Concordia to an outlier storm with a tornado signature just to the east of Great Bend, which endured a direct hit from that severe-looking storm.   More storms were developing to the west to just north of Dodge City.


Zoom snapshot taken at 6:46 PM:  The anvil top of the Great Bend-area storm stands out.


Friday morning 500 MB Chart shows the upper trough finally kicking eastward as another kicker trough pushes into the BC Coast.


By Friday evening, 12 hours later, the most energetic part of the upper trough has pushed from western Utah to central Colorado.  A more dynamic, divergent upper level flow is over Kansas.


At jet stream level Friday morning, a positive tilt upper trough extending to northwest Utah.


And Friday evening, an increasingly neutral tilt as the energetic southern portion of the upper trough pushes rapidly eastward over northeast Colorado, with a rapidly increasing jet streak over southwest to northeast Kansas.


Looking southeastward from the Clinton Lake Dam, the back side of shower-producing clouds is sunlit with some lenticular alto cumulous closer in, reflecting rapidly increasing winds aloft.


A last look to the southwest with the Great Bend area storm top (right), with some gulls and dynamic-looking alto cumulous clouds closer in.

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