Alert archive / Nebraska / Special Weather Statements in 2013

Special Weather Statement, NWS Omaha, NE

May 25, 2013Platte County, Nebraska

NWS Omaha, NE issued this special weather statement at May 25, 2013, 2:21 AM CDT for Platte County, Nebraska. It was in force for 24 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: May 25, 2013, 2:21 AM CDT (07:21 UTC)
Expired: May 25, 2013, 2:45 AM CDT
In force: 24 min
Issued by: NWS Omaha, NE

County Platte County, NE

The radar

The Omaha radar (KOAX), 84 km from the middle of the area, began a volume at 07:24 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

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 7.4 hours before the alert went out and 273 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: 1521 J/kg
Mixed-layer CIN: -13 J/kg
Mixed-layer LCL: 1551 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 98 m²/s²
0-3 km storm-relative helicity: 269 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 9.2

Open this sounding in Storm Lab

The text

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

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 25, 1:34 AM CDT	Special Weather Statement	OAX	Platte	41 min
May 25, 2:31 AM CDT	Special Weather Statement	OAX	Butler, Seward	44 min
May 25, 3:04 AM CDT	Special Weather Statement	OAX	Saline	26 min
May 25, 3:31 AM CDT	Special Weather Statement	OAX	Harrison	29 min
May 25, 4:15 AM CDT	Special Weather Statement	OAX	Monona	30 min
May 25, 3:36 PM CDT	Flash Flood Watch	OAX	Harrison, Monona, Shelby	12 hr

Nearby

Special Weather Statements in Nebraska, 2013 Every special weather statement 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.