Alert archive / Kansas / Special Weather Statements in 2012

Special Weather Statement, NWS Topeka, KS

August 8, 2012Anderson County, Kansas

NWS Topeka, KS issued this special weather statement at Aug 8, 2012, 7:40 PM CDT for Anderson County, Kansas. It was in force for 20 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, 2012, 7:40 PM CDT (00:40 UTC)
Expired
Aug 8, 2012, 8:00 PM CDT
In force
20 min
Issued by
NWS Topeka, KS

County Anderson County, KS

The radar

The Pleasant Hill radar (KEAX), 99 km from the middle of the area, began a volume at 00:41 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 (KFOE), launched 00:00Z, 0.7 hours before the alert went out and 100 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 2012-08-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1202 joules per kilogram.LCLEL10008507005003002001001 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 2012-08-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 38 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
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.

541 
WWUS83 KTOP 090040
SPSTOP

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TOPEKA KS
740 PM CDT WED AUG 8 2012

KSZ059-090100-
ANDERSON-
740 PM CDT WED AUG 8 2012

...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL AND SOUTHEASTERN 
ANDERSON COUNTY...

THROUGH 800 PM CDT...A STRONG THUNDERSTORM WILL MOVE SOUTHEAST AT 25 
MPH ACROSS PORTIONS OF EAST CENTRAL AND SOUTHEASTERN ANDERSON 
COUNTY. NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THIS STORM 
IS CAPABLE OF PRODUCING PENNY SIZE HAIL AND STRONG WINDS AROUND 50 
MPH.  RURAL AREAS OF EAST CENTRAL AND SOUTHEAST ANDERSON COUNTY WILL 
BE AFFECTED.

A SEVERE THUNDERSTORM WATCH IS ALSO IN EFFECT.

&&

LAT...LON 3825 9507 3804 9507 3804 9508 3818 9526
      3833 9513 3829 9506 3826 9506
TIME...MOT...LOC 0039Z 314DEG 23KT 3819 9511

$$ PHILLIPS

The office that day

Everything else NWS Topeka, KS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 8, 7:15 PM CDTSevere Thunderstorm WarningTOPOsage, Shawnee30 min
Aug 8, 7:33 PM CDTSevere Thunderstorm WarningTOPDouglas15 min

Nearby

Special Weather Statements in Kansas, 2012Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.