Alert archive / Nebraska / Special Weather Statements in 2015

Special Weather Statement, NWS Cheyenne, WY

May 27, 2015Dawes County, Nebraska

NWS Cheyenne, WY issued this special weather statement at May 27, 2015, 3:47 PM MDT for Dawes County, Nebraska. 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: May 27, 2015, 3:47 PM MDT (21:47 UTC)
Expired: May 27, 2015, 4:30 PM MDT
In force: 43 min
Issued by: NWS Cheyenne, WY

County Dawes County, NE

The radar

The Rapid City radar (KUDX), 161 km from the middle of the area, began a volume at 21:46 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 12:00Z, 9.8 hours before the alert went out and 293 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1704 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: -48 m²/s²
0-3 km storm-relative helicity: 30 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Cheyenne, WY wrote its last area forecast discussion before this special weather statement went out at May 27, 3:27 PM MDT, 20 minutes earlier.

Area forecast discussion, May 27, 3:27 PM MDT, 20 minutes before

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Hazardous weather outlook, May 27, 10:48 AM MDT, 4 hours 59 minutes before

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In the hours before

Special weather statement, May 27, 2:01 PM MDT, 1 hour 46 minutes before

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Special weather statement, May 27, 2:38 PM MDT, 1 hour 9 minutes before

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Special weather statement, May 27, 2:46 PM MDT, 1 hour 1 minute before

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Special weather statement, May 27, 2:50 PM MDT, 57 minutes before

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Special weather statement, May 27, 3:27 PM MDT, 20 minutes before

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Special weather statement, May 27, 3:47 PM MDT, 0 minutes before

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The office that day

Everything else NWS Cheyenne, WY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 26, 6:35 PM MDT	Special Weather Statement	CYS		25 min
May 26, 6:39 PM MDT	Special Weather Statement	CYS	Laramie	36 min
May 26, 7:04 PM MDT	Special Weather Statement	CYS	Niobrara	41 min
May 26, 7:17 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Niobrara	43 min
May 26, 8:02 PM MDT	Special Weather Statement	CYS	Niobrara	28 min
May 26, 8:11 PM MDT	Special Weather Statement	CYS	Platte	49 min
May 26, 8:30 PM MDT	Special Weather Statement	CYS	Niobrara	45 min
May 26, 10:45 PM MDT	Flash Flood Warning	CYS	Niobrara	4 hr
May 27, 12:16 PM MDT	Special Weather Statement	CYS	Dawes	44 min
May 27, 12:52 PM MDT	Special Weather Statement	CYS	Kimball	38 min
May 27, 1:20 PM MDT	Special Weather Statement	CYS	Morrill	40 min
May 27, 1:35 PM MDT	Special Weather Statement	CYS	Kimball	40 min
May 27, 2:01 PM MDT	Special Weather Statement	CYS	Morrill	44 min
May 27, 2:38 PM MDT	Special Weather Statement	CYS	Cheyenne	52 min
May 27, 2:46 PM MDT	Special Weather Statement	CYS	Cheyenne	44 min
May 27, 2:50 PM MDT	Special Weather Statement	CYS	Dawes	40 min
May 27, 3:27 PM MDT	Special Weather Statement	CYS	Cheyenne	33 min

Nearby

Special Weather Statements in Nebraska, 2015 Every special weather statement 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.