Alert archive / Kansas / Special Weather Statements in 2012

Special Weather Statement, NWS Topeka, KS

July 28, 2012Washington County, Kansas

NWS Topeka, KS issued this special weather statement at Jul 28, 2012, 9:02 PM CDT for Washington County, Kansas. It was in force for 43 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 28, 2012, 9:02 PM CDT (02:02 UTC)
Expired: Jul 28, 2012, 9:45 PM CDT
In force: 43 min
Issued by: NWS Topeka, KS

County Washington County, KS

The radar

The Grand Island radar (KUEX), 121 km from the middle of the area, began a volume at 02:04 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, 2.0 hours before the alert went out and 163 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: 981 J/kg
Mixed-layer CIN: -107 J/kg
Mixed-layer LCL: 2545 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 110 m²/s²
0-3 km storm-relative helicity: 404 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.4

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 Topeka, KS wrote its last area forecast discussion before this special weather statement went out at Jul 28, 6:19 PM CDT, 2 hours 43 minutes earlier.

Area forecast discussion, Jul 28, 6:19 PM CDT, 2 hours 43 minutes before

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Hazardous weather outlook, Jul 28, 3:01 PM CDT, 6 hours 1 minute before

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In the hours before

Special weather statement, Jul 28, 6:59 PM CDT, 2 hours 3 minutes before

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Special weather statement, Jul 28, 9:02 PM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 28, 9:21 PM CDT	Special Weather Statement	TOP	Washington	39 min
Jul 29, 3:33 PM CDT	Special Weather Statement	TOP	Franklin	27 min
Jul 29, 4:29 PM CDT	Special Weather Statement	TOP	Lyon	16 min
Jul 29, 4:41 PM CDT	Severe Thunderstorm Warning	TOP	Lyon	19 min
Jul 29, 4:53 PM CDT	Special Weather Statement	TOP	Osage	22 min
Jul 29, 5:10 PM CDT	Special Weather Statement	TOP	Lyon	20 min
Jul 29, 5:24 PM CDT	Severe Thunderstorm Warning	TOP	Lyon	24 min
Jul 29, 6:02 PM CDT	Special Weather Statement	TOP	Franklin	13 min
Jul 29, 6:36 PM CDT	Special Weather Statement	TOP	Franklin	24 min
Jul 29, 6:53 PM CDT	Special Weather Statement	TOP	Franklin	22 min

Nearby

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.