Alert archive / Kansas / Special Weather Statements in 2011

Special Weather Statement, NWS Kansas City, MO

August 8, 2011Buchanan County, Holt County, Missouri; Atchison County, Doniphan County, Leavenworth County, Kansas

NWS Kansas City, MO issued this special weather statement at Aug 8, 2011, 6:26 AM CDT for Buchanan County, Holt County, Missouri; Atchison County, Doniphan County, Leavenworth County, Kansas. It was in force for 49 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
Aug 8, 2011, 6:26 AM CDT (11:26 UTC)
Expired
Aug 8, 2011, 7:15 AM CDT
In force
49 min
Issued by
NWS Kansas City, MO

Counties Atchison County, KS, Doniphan County, KS, Leavenworth County, KS, Buchanan County, MO, Holt County, MO

The radar

The Topeka radar (KTWX), 125 km from the middle of the area, began a volume at 11:26 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 nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 11.4 hours before the alert went out and 99 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Topeka, KS at 00:00Z on 2011-08-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 120 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Topeka, KS at 00:00Z on 2011-08-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 54 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
120 J/kg
Mixed-layer CIN
-474 J/kg
Mixed-layer LCL
2544 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
54 m²/s²
0-3 km storm-relative helicity
256 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.8

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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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 Aug 8, 4:00 AM CDT, 2 hours 26 minutes earlier.

Area forecast discussion, Aug 8, 4:00 AM CDT, 2 hours 26 minutes before
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Hazardous weather outlook, Aug 8, 5:04 AM CDT, 1 hour 22 minutes before
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In the hours before

Special weather statement, Aug 8, 12:56 AM CDT, 5 hours 30 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1256 AM CDT MON AUG 8 2011

KSZ057-060-105-080645-
JOHNSON KS-LINN KS-MIAMI KS-
1256 AM CDT MON AUG 8 2011

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN JOHNSON...
NORTHWESTERN LINN AND MIAMI COUNTIES IN EAST CENTRAL KANSAS UNTIL 145
AM CDT...

AT 1253 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM PLEASANT GROVE TO
PRINCETON TO BURLINGTON...AND MOVING EAST AT 40 MPH.

HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THESE STORMS.

LOCATIONS NEAR THE PATH OF THESE STORMS INCLUDE...
  EDGERTON...OSAWATOMIE...GARDNER...PAOLA...SPRING HILL...LA CYGNE...
  PARKER...FONTANA...BEAGLE...CLARE...HILLSDALE...WAGSTAFF...
  CHILES...NEW LANCASTER AND BUCYRUS.

THIS WILL IMPACT

 I-35 BETWEEN MILE MARKERS 200 AND 213.

THESE STORMS MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS... FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

LAT...LON 3886 9506 3883 9471 3835 9473 3815 9508
TIME...MOT...LOC 0556Z 284DEG 36KT 3884 9522 3845 9523
          3819 9567

SF
Special weather statement, Aug 8, 1:22 AM CDT, 5 hours 4 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
122 AM CDT MON AUG 8 2011

KSZ060-MOZ053-080700-
BATES MO-LINN KS-
122 AM CDT MON AUG 8 2011

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN LINN COUNTY IN EAST
CENTRAL KANSAS...AND SOUTHWESTERN BATES COUNTY IN WEST CENTRAL
MISSOURI UNTIL 200 AM CDT...

AT 116 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 6 MILES SOUTH OF
GREELEY TO LONE ELM TO NEOSHO FALLS...AND MOVING EAST AT 45 MPH.

HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THESE STORMS...ALONG WITH HEAVY RAIN.

LOCATIONS NEAR THE PATH OF THESE STORMS INCLUDE...
  MOUND CITY...PLEASANTON...BLUE MOUND...PRESCOTT...HUME...WORLAND
  AND FOSTER.

THESE STORMS MAY INTENSIFY...AND SEVERE THUNDERSTORM WATCH 745 IS IN
EFFECT UNTIL 6 AM FOR THIS AREA. BE CERTAIN TO MONITOR LOCAL
RADIO AND TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR
ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL
WEATHER SERVICE.

TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED
ROADWAY.

LAT...LON 3805 9508 3819 9508 3824 9507 3822 9440
      3805 9452 3806 9461 3804 9461 3804 9473
TIME...MOT...LOC 0621Z 279DEG 38KT 3827 9501 3814 9519
          3800 9547

SF
Special weather statement, Aug 8, 1:46 AM CDT, 4 hours 40 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
146 AM CDT MON AUG 8 2011

KSZ057-060-MOZ043-053-054-080730-
BATES MO-CASS MO-HENRY MO-LINN KS-MIAMI KS-
146 AM CDT MON AUG 8 2011

...SIGNIFICANT WEATHER ADVISORY FOR LINN AND EASTERN MIAMI COUNTIES
IN EAST CENTRAL KANSAS...AND SOUTHWESTERN HENRY...SOUTHERN CASS AND
BATES COUNTIES IN WEST CENTRAL MISSOURI UNTIL 230 AM CDT...

AT 143 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 5 MILES SOUTHEAST OF
PAOLA TO 9 MILES NORTHEAST OF PLEASANTON TO MOUND CITY...AND MOVING
EAST AT 45 MPH.

HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 40 MPH ARE
EXPECTED WITH THESE STORMS...ALONG WITH HEAVY RAIN.

LOCATIONS NEAR THE PATH OF THESE STORMS INCLUDE...
  PLEASANTON...LOUISBURG...BUTLER...ADRIAN...RICH HILL...GARDEN
  CITY...DREXEL...FREEMAN...HUME...ARCHIE...MONTROSE...CREIGHTON...
  AMSTERDAM...WORLAND...MERWIN...WEST LINE...FOSTER...PASSAIC...
  BALLARD AND ROCKVILLE.

THESE STORMS MAY INTENSIFY...AND SEVERE THUNDERSTORM WATCH 745IS IN
EFFECT FOR PORTIONS OF THIS AREA UNTIL 6 AM. BE CERTAIN TO MONITOR
LOCAL RADIO AND TV STATIONS...AS WELL AS LOCAL CABLE TV
OUTLETS...FOR ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE
NATIONAL WEATHER SERVICE.

TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED
ROADWAY.

LAT...LON 3804 9424 3805 9444 3815 9505 3824 9465
      3872 9495 3854 9406 3821 9385 3821 9404
      3804 9405 3804 9412 3805 9413 3805 9416
      3804 9420 3805 9421 3802 9423
TIME...MOT...LOC 0646Z 282DEG 38KT 3852 9475 3822 9452
          3816 9482

SF
Special weather statement, Aug 8, 1:55 AM CDT, 4 hours 31 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
155 AM CDT MON AUG 8 2011

MOZ037-038-043-044-053-054-080745-
BATES MO-CASS MO-HENRY MO-JACKSON MO-JOHNSON MO-LAFAYETTE MO-
155 AM CDT MON AUG 8 2011

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN LAFAYETTE...
JOHNSON...SOUTHERN JACKSON...WESTERN HENRY...CASS AND NORTHEASTERN
BATES COUNTIES IN WEST CENTRAL MISSOURI UNTIL 245 AM CDT...

AT 152 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A CLUSTER OF THUNDERSTORMS ALONG A LINE EXTENDING FROM OVERLAND PARK
TO DREXEL...AND MOVING EAST AT 40 MPH.

WIND GUSTS UP TO 45 MPH ARE EXPECTED WITH THESE STORMS...ALONG WITH
HEAVY RAIN.

LOCATIONS NEAR THE PATH OF THESE STORMS INCLUDE...
  LAKE LOTAWANA...PLEASANT HILL...GARDEN CITY...HOLDEN...
  WARRENSBURG...ARCHIE...EAST LYNNE...LONE JACK...KINGSVILLE...
  CREIGHTON...URICH...CHILHOWEE...TARSNEY LAKES...STRASBURG...GUNN
  CITY...LA TOUR...LAKE LAFAYETTE...PITTSVILLE...QUICK CITY AND
  BLAIRSTOWN.

THIS WILL IMPACT THE FOLLOWING INTERSTATES...

  I-435 LOOP FROM MILE MARKERS 65 TO 72.
  I-470 BETWEEN MILE MARKERS 0 AND 14.

THESE STORMS MAY INTENSIFY...AND A SEVERE THUNDERSTORM WATCH IS IN
EFFECT FOR THIS AREA. BE CERTAIN TO MONITOR LOCAL RADIO AND TV
STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED
ROADWAY.

LAT...LON 3895 9361 3823 9384 3857 9456 3903 9455
TIME...MOT...LOC 0655Z 288DEG 34KT 3899 9429 3852 9438

SF!
Special weather statement, Aug 8, 6:26 AM CDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 8, 1:46 AM CDTSpecial Weather StatementEAXBates44 min
Aug 8, 1:55 AM CDTSpecial Weather StatementEAXCass, Henry, Jackson, Johnson50 min
Aug 8, 12:56 AM CDTSpecial Weather StatementEAXMiami49 min
Aug 8, 1:22 AM CDTSpecial Weather StatementEAXLinn38 min

Nearby

Special Weather Statements in Kansas, 2011Special Weather Statements in Missouri, 2011Every special weather statement in 2011

Sources

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