Alert archive / Kansas / Special Weather Statements in 2017

Special Weather Statement, NWS Kansas City, MO

July 13, 2017Johnson County, Kansas

NWS Kansas City, MO issued this special weather statement at Jul 13, 2017, 8:41 PM CDT for Johnson County, Kansas. It was in force for 34 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 13, 2017, 8:41 PM CDT (01:41 UTC)
Expired
Jul 13, 2017, 9:15 PM CDT
In force
34 min
Issued by
NWS Kansas City, MO

County Johnson County, KS

The radar

The Pleasant Hill radar (KEAX), 31 km from the middle of the area, began a volume at 01:42 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Kansas City, MO wrote its last area forecast discussion before this special weather statement went out at Jul 13, 6:28 PM CDT, 2 hours 13 minutes earlier.

Area forecast discussion, Jul 13, 6:28 PM CDT, 2 hours 13 minutes before
AREA FORECAST DISCUSSION
National Weather Service Kansas City/Pleasant Hill MO
628 PM CDT Thu Jul 13 2017

.Discussion...
Issued at 316 PM CDT THU JUL 13 2017

Cold front has made it just south of a St. Joseph to Kirksville
line this afternoon with a secondary outflow boundary situated
very close to I-70. This latter boundary will likely serve as a
focus for thunderstorm development over the next few hours, as
evidenced by the agitated cumulus field quickly filling in along
this corridor, but will first have to overcome a temperature
inversion at 800 hPa. Most indications are that temperatures at
this level will cool enough to allow convective initiation by 4 or
5 PM and allow rapid thunderstorm development close to or just
north of the I-70 corridor. Shear is weak but strong instability
could allow storms to quickly become strong with isolated large
hail and a few bowing structures with damaging downburst winds
before quickly becoming outflow dominated and transitioning to
more of a heavy rain threat after a couple of hours. Precipitable
water values are high and will support spotty rainfall amounts as
high as 2 or 3 inches especially across areas from KC toward
Sedalia this evening, although storms should begin to accelerate
southward after sunset and cut back on the potential for very
heavy rain. In addition, the lack of a focused low- level jet
feeding into the cold front should prevent a widespread heavy rain
and flooding situation like what occurred further north last
night.

Some storms could linger across southern parts of the forecast
area Friday morning although most models are now bringing clearing
conditions to most of the region by mid morning. Much more
comfortable conditions will build in for Friday with highs in the
lower and middle 80s. Saturday will see a slight warm up but still
with lower humidity values to keep things relatively comfortable
compared to the past week.

The "cooler" temperatures for the end of the week will be short-
lived as a deep upper ridge will build back in from the west by
the beginning of next week. This will bring a return to hot and
humid conditions for much of next week with highs at least in the
lower or middle 90s and humidity creeping back up into
uncomfortable, maybe even hazardous levels.

&&

.Aviation...(For the 00Z TAFS through 00Z Friday Evening)
Issued at 627 PM CDT THU JUL 13 2017

Surface boundary is sliding south of the KC area currently with
storms struggling to maintain themselves north of the boundary.
Given this, feel that only KIXD has a high enough chance for
storms to mention as a TSRA group. KMKC and KMCI may see more of a
stratiform rain with perhaps embedded thunder. There may be
additional showers and storms develop along the elevated boundary
later in the evening as it pushes south as well. But confidence
isn't high regarding that as instability drops significantly north
of the surface boundary. For tomorrow, VFR conditions are expected
with light easterly winds.

&&

.EAX WATCHES/WARNINGS/ADVISORIES...
KS...NONE.
MO...NONE.
&&

Discussion...Hawblitzel
Aviation...CDB
Hazardous weather outlook, Jul 13, 4:41 AM CDT, 16 hours before
Hazardous Weather Outlook
National Weather Service Kansas City/Pleasant Hill MO
441 AM CDT Thu Jul 13 2017

KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040-
043>046-053-054-140945-
Atchison KS-Miami-Linn KS-Doniphan-Leavenworth-Wyandotte-Johnson KS-
Atchison MO-Nodaway-Worth-Gentry-Harrison-Mercer-Putnam-Schuyler-
Holt-Andrew-De Kalb-Daviess-Grundy-Sullivan-Adair-Buchanan-Clinton-
Caldwell-Livingston-Linn MO-Macon-Platte-Clay-Ray-Carroll-Chariton-
Randolph-Jackson-Lafayette-Saline-Howard-Cass-Johnson MO-Pettis-
Cooper-Bates-Henry-
441 AM CDT Thu Jul 13 2017

This hazardous weather outlook is for northwest...north central and
west central Missouri...as well as extreme eastern Kansas.

.DAY ONE...Today and Tonight

 3 to 7 inches of rain has fallen across a large portion of north
 central Missouri overnight leading to road closures as well flooding
 along area rivers, creeks, and streams.

 Hot conditions will continue today along and south of Highway 50
 where temperatures will reach the low to mid 90s with heat index
 values in the 100 to 105 range.

 Strong to isolated severe storms will be possible this evening into
 tonight. These storms again will be efficient rain makers and may
 cause localized flash flooding. Damaging downburst winds will be the
 main severe threat. Small hail and frequent lightning will also be
 possible.

 More detailed information can be accessed at...
 https://www.weather.gov/eax/hwo

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

 No hazardous weather is expected at this time.

 More detailed information can be accessed at...
 https://www.weather.gov/eax/hwo

In the hours before

Special weather statement, Jul 13, 6:06 PM CDT, 2 hours 35 minutes before
Special Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
606 PM CDT THU JUL 13 2017

MOZ037-043-132330-
Cass MO-Jackson MO-
606 PM CDT THU JUL 13 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL CASS AND
SOUTHEASTERN JACKSON COUNTIES UNTIL 630 PM CDT...

At 606 PM CDT, Doppler radar was tracking a strong thunderstorm near
Greenwood, moving southeast at 15 mph.

Winds in excess of 40 mph will be possible with this storm.

Locations impacted include...
Lee's Summit, Pleasant Hill, Greenwood, Lake Lotawana, Lake
Winnebago, Lone Jack, Baldwin Park, Unity Village and Tarsney Lakes.

This includes Interstate 470 between mile markers 8 and 13.

LAT...LON 3888 9445 3900 9437 3893 9411 3875 9425
TIME...MOT...LOC 2306Z 299DEG 14KT 3890 9431

Grana
Special weather statement, Jul 13, 6:10 PM CDT, 2 hours 31 minutes before
Special Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
610 PM CDT THU JUL 13 2017

MOZ044-132345-
Johnson MO-
610 PM CDT THU JUL 13 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN JOHNSON COUNTY UNTIL
645 PM CDT...

At 610 PM CDT, Doppler radar was tracking a strong thunderstorm near
Lone Jack, or 9 miles north of Holden, moving east at 15 mph.

Winds in excess of 40 mph will be possible with this storm.

This storm will remain over mainly rural areas of northwestern
Johnson County.

LAT...LON 3882 9412 3888 9412 3891 9411 3892 9411
      3892 9405 3890 9396 3878 9404
TIME...MOT...LOC 2310Z 290DEG 12KT 3885 9405

Welsh
Special weather statement, Jul 13, 6:40 PM CDT, 2 hours 1 minute before
Special Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
640 PM CDT THU JUL 13 2017

MOZ043-044-140015-
Cass MO-Johnson MO-
640 PM CDT THU JUL 13 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN CASS AND WEST
CENTRAL JOHNSON COUNTIES UNTIL 715 PM CDT...

At 640 PM CDT, Doppler radar was tracking a strong thunderstorm over
East Lynne, or 7 miles southeast of Pleasant Hill, moving southeast
at 10 mph.

Winds in excess of 40 mph will be possible with this storm.

Locations impacted include...
Harrisonville, East Lynne and Gunn City.

LAT...LON 3868 9435 3879 9424 3869 9404 3857 9419
TIME...MOT...LOC 2340Z 305DEG 7KT 3869 9421

Grana
Special weather statement, Jul 13, 7:20 PM CDT, 1 hour 21 minutes before
Special Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
720 PM CDT THU JUL 13 2017

KSZ057-105-140045-
Johnson KS-Miami KS-
720 PM CDT THU JUL 13 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN MIAMI AND SOUTHERN
JOHNSON COUNTIES UNTIL 745 PM CDT...

At 720 PM CDT, Doppler radar was tracking a strong thunderstorm over
Spring Hill, moving east at 30 mph.

Wind gusts up to 50 mph will be possible with this storm.

Locations impacted include...
Overland Park, Olathe, Leawood, Gardner, Spring Hill, Louisburg,
Hillsdale, Bucyrus, Chiles, Clare, Stillwell, Stanley and Wagstaff.

This includes Interstate 35 in Kansas between mile markers 204 and
215.

LAT...LON 3867 9500 3885 9497 3886 9461 3880 9461
      3855 9467
TIME...MOT...LOC 0020Z 280DEG 28KT 3873 9481

Welsh
Special weather statement, Jul 13, 7:45 PM CDT, 56 minutes before
Special Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
745 PM CDT THU JUL 13 2017

KSZ057-MOZ043-140115-
Miami KS-Cass MO-
745 PM CDT THU JUL 13 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN MIAMI AND WESTERN
CASS COUNTIES UNTIL 815 PM CDT...

At 744 PM CDT, Doppler radar was tracking a strong thunderstorm over
Cleveland, or near Louisburg, moving east at 25 mph.

Winds in excess of 40 mph will be possible with this storm.

Locations impacted include...
Raymore, Peculiar, Louisburg, Cleveland, Freeman, Lake Annette and
West Line.

LAT...LON 3855 9469 3874 9464 3874 9461 3880 9461
      3876 9436 3848 9443 3847 9447
TIME...MOT...LOC 0044Z 279DEG 21KT 3864 9459

Welsh
Special weather statement, Jul 13, 8:41 PM CDT, 0 minutes before
Special Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
841 PM CDT THU JUL 13 2017

KSZ105-MOZ037-043-140215-
Johnson KS-Cass MO-Jackson MO-
841 PM CDT THU JUL 13 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN JOHNSON...
NORTHWESTERN CASS AND SOUTHWESTERN JACKSON COUNTIES UNTIL 915 PM
CDT...

At 841 PM CDT, Doppler radar was tracking a strong thunderstorm near
Belton, moving east at 20 mph.

Winds in excess of 40 mph will be possible with this storm.

Locations impacted include...
Kansas City, Overland Park, Olathe, Lee's Summit, Lenexa, Leawood,
Raytown, Grandview, Belton, Prairie Village, Raymore and Stanley.

This includes the following highways...
 Interstate 35 in Kansas near mile marker 222.
 Interstate 470 between mile markers 0 and 4.
 Interstate 435 near mile marker 0, and between mile markers 65 and
83.

LAT...LON 3877 9471 3894 9475 3903 9450 3879 9441
TIME...MOT...LOC 0141Z 255DEG 13KT 3884 9465

Welsh

The office that day

Everything else NWS Kansas City, MO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 13, 7:45 PM CDTSpecial Weather StatementEAXCass30 min
Jul 13, 9:41 PM CDTSpecial Weather StatementEAXJackson19 min
Jul 13, 9:43 PM CDTRiver Flood WarningEAXJackson26 hr
Jul 13, 10:54 PM CDTRiver Flood WarningEAXJackson28 hr
Jul 13, 7:20 PM CDTSpecial Weather StatementEAXMiami25 min
Jul 13, 8:28 PM CDTAreal Flood AdvisoryEAXJohnson6 hr
Jul 13, 9:43 PM CDTRiver Flood WarningEAXJohnson26 hr

Nearby

Special Weather Statements in Kansas, 2017Every special weather statement in 2017

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.