Alert archive / Wyoming / Areal Flood Warnings in 2016

Areal Flood Warning 1, NWS Cheyenne, WY

May 8, 2016Platte County, Wyoming

NWS Cheyenne, WY issued this areal flood warning at May 8, 2016, 9:06 AM MDT for Platte County, Wyoming. It was in force for 9 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 8, 2016, 9:06 AM MDT (15:06 UTC)
Expired: May 8, 2016, 6:00 PM MDT
In force: 9 hr
Issued by: NWS Cheyenne, WY
Area: Storm-based polygon
Flood severity: None

County Platte County, WY

The radar

The Cheyenne radar (KCYS), 110 km from the middle of the area, began a volume at 15:05 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

Denver, CO (KDEN), launched 12:00Z, 3.1 hours before the alert went out and 291 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: 1878 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 13 m²/s²
0-3 km storm-relative helicity: 41 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood warning 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 areal flood warning went out at May 8, 6:27 AM MDT, 2 hours 39 minutes earlier.

Area forecast discussion, May 8, 6:27 AM MDT, 2 hours 39 minutes before

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Hazardous weather outlook, May 8, 4:14 AM MDT, 4 hours 52 minutes before

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In the hours before

Special weather statement, May 8, 5:05 AM MDT, 4 hours 1 minute before

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      <div class="status" id="status">Temporary Notice</div>
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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 8, 10:38 AM MDT	Winter Storm Warning	CYS	Albany, Carbon	8 hr
May 8, 12:03 PM MDT	River Flood Warning	CYS	Goshen	25 days
May 8, 5:01 PM MDT	Special Weather Statement	CYS	Laramie	29 min
May 8, 5:24 PM MDT	Special Weather Statement	CYS	Goshen	51 min
May 8, 12:18 PM MDT	River Flood Warning	CYS	Scotts Bluff	31 days
May 8, 3:37 PM MDT	River Flood Warning	CYS	Scotts Bluff	24 hr

Nearby

Areal Flood Warnings in Wyoming, 2016 Every areal flood warning in 2016

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.