Alert archive / Missouri / Special Weather Statements in 2012

Special Weather Statement, NWS Kansas City, MO

August 8, 2012Cass County, Missouri; Miami County, Kansas

NWS Kansas City, MO issued this special weather statement at Aug 8, 2012, 7:48 PM CDT for Cass County, Missouri; Miami County, Kansas. It was in force for 27 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Aug 8, 2012, 7:48 PM CDT (00:48 UTC)
Expired: Aug 8, 2012, 8:15 PM CDT
In force: 27 min
Issued by: NWS Kansas City, MO

Counties Miami County, KS, Cass County, MO

The radar

The Pleasant Hill radar (KEAX), 42 km from the middle of the area, began a volume at 00:50 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.

What was reported inside it

Time	Report	Where	Remark
Aug 8, 8:00 PM CDT	HAIL 0.75	3 S Drexel, MO

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Topeka, KS (KFOE), launched 00:00Z, 0.8 hours before the alert went out and 93 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1202 J/kg
Mixed-layer CIN: -11 J/kg
Mixed-layer LCL: 2811 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 38 m²/s²
0-3 km storm-relative helicity: 63 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.5

Open this sounding in Storm Lab

The text

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

298 
WWUS83 KEAX 090048
SPSEAX

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
748 PM CDT WED AUG 8 2012

KSZ057-105-MOZ037-043-053-090115-
BATES MO-CASS MO-JACKSON MO-JOHNSON KS-MIAMI KS-
748 PM CDT WED AUG 8 2012

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN JOHNSON AND MIAMI
COUNTIES IN EAST CENTRAL KANSAS...AND SOUTHWESTERN JACKSON...CASS AND
NORTHWESTERN BATES COUNTIES IN WEST CENTRAL MISSOURI UNTIL 815 PM
CDT...

AT 745 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM LEE'S SUMMIT TO 6
MILES EAST OF SPRING HILL TO 6 MILES SOUTH OF WELLSVILLE...AND MOVING
SOUTHEAST AT 45 MPH.

WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THESE STORMS.

LOCATIONS NEAR THE PATH OF THESE STORMS INCLUDE...
  RAYMORE...GREENWOOD...PAOLA...LOUISBURG...PECULIAR...OSAWATOMIE...
  PLEASANT HILL...HARRISONVILLE...LAKE WINNEBAGO...CLEVELAND...
  FREEMAN...FONTANA...DREXEL...EAST LYNNE...WEST LINE...BEAGLE...NEW
  LANCASTER AND GUNN CITY.

THIS WILL IMPACT

 I-470 BETWEEN MILE MARKERS 1 AND 7.

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.

LAT...LON 3869 9507 3878 9476 3898 9447 3867 9412
      3866 9413 3841 9449 3839 9498 3839 9507
TIME...MOT...LOC 0048Z 324DEG 40KT 3889 9441 3871 9469
          3861 9503

$$

DEROCHE

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 8, 7:01 PM CDT	Special Weather Statement	EAX	Platte	29 min
Aug 8, 7:03 PM CDT	Severe Thunderstorm Warning	EAX	Clay, Platte	27 min
Aug 8, 7:15 PM CDT	Severe Thunderstorm Warning	EAX	Clay, Jackson, Platte	30 min
Aug 8, 7:22 PM CDT	Severe Thunderstorm Warning	EAX	Atchison, Nodaway	38 min
Aug 8, 7:34 PM CDT	Severe Thunderstorm Warning	EAX	Clay, Clinton, Jackson, Lafayette, Platte, Ray	26 min
Aug 8, 7:56 PM CDT	Severe Thunderstorm Warning	EAX	Gentry, Nodaway, Worth	34 min
Aug 8, 8:01 PM CDT	Special Weather Statement	EAX	Jackson, Lafayette, Ray	29 min
Aug 8, 8:19 PM CDT	Special Weather Statement	EAX	Daviess	41 min
Aug 8, 8:30 PM CDT	Special Weather Statement	EAX	Johnson, Lafayette	30 min
Aug 8, 8:33 PM CDT	Severe Thunderstorm Warning	EAX	Daviess, Grundy, Livingston	42 min
Aug 8, 8:54 PM CDT	Special Weather Statement	EAX	Johnson, Pettis, Saline	36 min
Aug 8, 9:19 PM CDT	Special Weather Statement	EAX	Grundy	26 min
Aug 8, 7:03 PM CDT	Severe Thunderstorm Warning	EAX	Linn	27 min
Aug 8, 7:07 PM CDT	Special Weather Statement	EAX	Leavenworth	38 min

Nearby

Special Weather Statements in Missouri, 2012 Special Weather Statements in Kansas, 2012 Every special weather statement in 2012

Sources

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