Alert archive / Nebraska / Special Weather Statements in 2019

Special Weather Statement, NWS Cheyenne, WY

May 16, 2019Cheyenne County, Nebraska

NWS Cheyenne, WY issued this special weather statement at May 16, 2019, 1:25 PM MDT for Cheyenne County, Nebraska. It was in force for 35 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 16, 2019, 1:25 PM MDT (19:25 UTC)
Expired: May 16, 2019, 2:00 PM MDT
In force: 35 min
Issued by: NWS Cheyenne, WY

County Cheyenne County, NE

The radar

The Cheyenne radar (KCYS), 122 km from the middle of the area, began a volume at 19:26 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, 7.4 hours before the alert went out and 230 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: 8 J/kg
Mixed-layer CIN: -511 J/kg
Mixed-layer LCL: 2697 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 94 m²/s²
0-3 km storm-relative helicity: 93 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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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 16, 12:02 PM MDT, 1 hour 23 minutes earlier.

Area forecast discussion, May 16, 12:02 PM MDT, 1 hour 23 minutes before

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Hazardous weather outlook, May 16, 10:52 AM MDT, 2 hours 33 minutes before

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In the hours before

Special weather statement, May 16, 1:25 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 16, 3:33 PM MDT	Special Weather Statement	CYS	Banner	27 min
May 16, 3:35 PM MDT	Special Weather Statement	CYS	Sioux	25 min
May 16, 3:53 PM MDT	Special Weather Statement	CYS	Box Butte	52 min
May 16, 4:09 PM MDT	Severe Thunderstorm Warning	CYS	Box Butte, Dawes, Sioux	13 min
May 16, 4:15 PM MDT	Severe Thunderstorm Warning	CYS	Box Butte, Morrill	45 min
May 16, 4:31 PM MDT	Special Weather Statement	CYS	Box Butte	29 min
May 16, 4:55 PM MDT	Severe Thunderstorm Warning	CYS	Box Butte	34 min
May 16, 5:00 PM MDT	Flash Flood Warning	CYS	Box Butte	89 min

Nearby

Special Weather Statements in Nebraska, 2019 Every special weather statement in 2019

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.