Alert archive / Wyoming / High Wind Watches in 2020

High Wind Watch 3, NWS Riverton, WY

January 30, 2020Park County, Wyoming

NWS Riverton, WY issued this high wind watch at Jan 30, 2020, 1:59 PM MST for Park County, Wyoming. It took effect at Jan 31, 2020, 9:00 PM MST. It was in force for .

The area

The counties it named.

The facts

Issued: Jan 30, 2020, 1:59 PM MST (20:59 UTC)
In effect from: Jan 31, 2020, 9:00 PM MST
Expired: Jan 31, 2020, 1:27 PM MST
In force
Issued by: NWS Riverton, WY

County Park County, WY

The radar

The Billings radar (KBLX), 167 km from the middle of the area, began a volume at 21:00 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

Riverton, WY (KRIW), launched 12:00Z, 9.0 hours before the alert went out and 187 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: 1580 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 111 m²/s²
0-3 km storm-relative helicity: 181 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 high wind watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Riverton, WY wrote its last area forecast discussion before this high wind watch went out at Jan 30, 10:54 AM MST, 3 hours 5 minutes earlier.

Area forecast discussion, Jan 30, 10:54 AM MST, 3 hours 5 minutes before

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Hazardous weather outlook, Jan 30, 3:36 AM MST, 10 hours 23 minutes before

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In the hours before

Special weather statement, Jan 30, 12:47 PM MST, 1 hour 12 minutes before

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Nearby

High Wind Watches in Wyoming, 2020 Every high wind watch in 2020

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.