Alert archive / Nebraska / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 119, NWS Omaha, NE

July 6, 2015Pawnee County, Richardson County, Nebraska

NWS Omaha, NE issued this severe thunderstorm warning at Jul 6, 2015, 1:21 PM CDT for Pawnee County, Richardson County, Nebraska. It was in force for 39 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: Jul 6, 2015, 1:21 PM CDT (18:21 UTC)
Expired: Jul 6, 2015, 2:00 PM CDT
In force: 39 min
Issued by: NWS Omaha, NE
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Pawnee County, NE, Richardson County, NE

The radar

The Topeka radar (KTWX), 128 km from the middle of the area, began a volume at 18:21 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 12:00Z, 6.4 hours before the alert went out and 129 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: 625 J/kg
Mixed-layer CIN: -194 J/kg
Mixed-layer LCL: 1151 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: 94 m²/s²
0-3 km storm-relative helicity: 131 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The office that day

Everything else NWS Omaha, NE issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 5, 10:01 PM CDT	Special Weather Statement	OAX	Sarpy	44 min
Jul 5, 10:49 PM CDT	Areal Flood Advisory	OAX	Cass, Otoe	3 hr
Jul 6, 11:36 AM CDT	Special Weather Statement	OAX	Gage, Jefferson	39 min
Jul 6, 12:15 PM CDT	Special Weather Statement	OAX	Gage	45 min
Jul 6, 12:20 PM CDT	Areal Flood Advisory	OAX	Gage, Jefferson	55 min
Jul 6, 12:54 PM CDT	Special Weather Statement	OAX	Pawnee	51 min
Jul 6, 1:32 PM CDT	Areal Flood Advisory	OAX	Gage, Pawnee	118 min
Jul 6, 1:49 PM CDT	Areal Flood Advisory	OAX	Pawnee, Richardson	116 min
Jul 6, 1:59 PM CDT	Special Weather Statement	OAX	Richardson	46 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2015 Every severe thunderstorm warning in 2015

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.