Alert archive / Kansas / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 102, NWS Topeka, KS

June 27, 2013Brown County, Kansas

NWS Topeka, KS issued this severe thunderstorm warning at Jun 27, 2013, 8:58 AM CDT for Brown County, Kansas. It was in force for 47 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 27, 2013, 8:58 AM CDT (13:58 UTC)
Expired: Jun 27, 2013, 9:45 AM CDT
In force: 47 min
Issued by: NWS Topeka, KS
Area: Storm-based polygon
Hail: 1.75 in
Wind: 70.0 mph

County Brown County, KS

The radar

The Topeka radar (KTWX), 109 km from the middle of the area, began a volume at 14:01 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 27, 8:28 AM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 2.0 hours before the alert went out and 92 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: 3630 J/kg
Mixed-layer CIN: -106 J/kg
Mixed-layer LCL: 1189 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 45 m²/s²
0-3 km storm-relative helicity: 83 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 7.5

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Jun 27, 6:41 AM CDT, 2 hours 17 minutes earlier.

Area forecast discussion, Jun 27, 6:41 AM CDT, 2 hours 17 minutes before

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Hazardous weather outlook, Jun 27, 8:50 AM CDT, 8 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
Jun 27, 10:13 AM CDT	Special Weather Statement	TOP	Brown	32 min
Jun 27, 10:51 AM CDT	Areal Flood Advisory	TOP	Brown	114 min
Jun 27, 11:07 AM CDT	Special Weather Statement	TOP	Brown	38 min
Jun 27, 1:17 PM CDT	Severe Thunderstorm Warning	TOP	Marshall, Washington	43 min
Jun 27, 1:58 PM CDT	Severe Thunderstorm Warning	TOP	Marshall, Pottawatomie, Riley, Washington	47 min
Jun 27, 4:07 PM CDT	Special Weather Statement	TOP	Brown	23 min
Jun 27, 4:14 PM CDT	Severe Thunderstorm Warning	TOP	Ottawa	31 min
Jun 27, 4:40 PM CDT	Areal Flood Advisory	TOP	Brown	65 min
Jun 27, 6:18 PM CDT	Special Weather Statement	TOP	Pottawatomie	42 min
Jun 27, 6:36 PM CDT	Severe Thunderstorm Warning	TOP	Pottawatomie	24 min
Jun 27, 6:49 PM CDT	Severe Thunderstorm Warning	TOP	Jackson, Pottawatomie	26 min
Jun 27, 6:58 PM CDT	Severe Thunderstorm Warning	TOP	Pottawatomie	47 min

Nearby

Severe Thunderstorm Warnings in Kansas, 2013 Every severe thunderstorm warning in 2013

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.