Alert archive / Nebraska / Special Weather Statements in 2012

Special Weather Statement, NWS Omaha, NE

March 29, 2012Douglas County, Washington County, Nebraska

NWS Omaha, NE issued this special weather statement at Mar 29, 2012, 12:13 AM CDT for Douglas County, Washington County, Nebraska. 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 outline as issued.

The facts

Issued: Mar 29, 2012, 12:13 AM CDT (05:13 UTC)
Expired: Mar 29, 2012, 1:00 AM CDT
In force: 47 min
Issued by: NWS Omaha, NE

Counties Douglas County, NE, Washington County, NE

The radar

The Omaha radar (KOAX), 26 km from the middle of the area, began a volume at 05:15 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, 5.2 hours before the alert went out and 264 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: 1317 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 1400 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 37 m²/s²
0-3 km storm-relative helicity: 180 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 6.6

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 Omaha, NE wrote its last area forecast discussion before this special weather statement went out at Mar 28, 11:27 PM CDT, 46 minutes earlier.

Area forecast discussion, Mar 28, 11:27 PM CDT, 46 minutes before

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Hazardous weather outlook, Mar 28, 5:18 PM CDT, 6 hours 55 minutes before

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In the hours before

Special weather statement, Mar 29, 12:13 AM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 28, 10:07 PM CDT	Severe Thunderstorm Warning	OAX	Richardson	18 min
Mar 29, 12:17 AM CDT	Special Weather Statement	OAX	Gage	43 min
Mar 29, 5:47 PM CDT	Special Weather Statement	OAX	Johnson	43 min
Mar 29, 6:09 PM CDT	Severe Thunderstorm Warning	OAX	Johnson, Otoe	24 min
Mar 29, 6:23 PM CDT	Severe Thunderstorm Warning	OAX	Johnson, Nemaha, Otoe	37 min
Mar 29, 6:41 PM CDT	Severe Thunderstorm Warning	OAX	Cass, Sarpy	49 min
Mar 29, 6:45 PM CDT	Severe Thunderstorm Warning	OAX	Nemaha	30 min

Nearby

Special Weather Statements in Nebraska, 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.