Alert archive / Colorado / Wind Chill Advisories in 2023

Wind Chill Advisory 2, NWS Denver/Boulder, CO

January 30, 202313 counties in Colorado

NWS Denver/Boulder, CO issued this wind chill advisory at Jan 30, 2023, 3:16 AM MST for 13 counties in Colorado. It took effect at Jan 30, 2023, 9:00 PM MST. It was in force for 11 hr.

The area

The counties it named.

The facts

Issued: Jan 30, 2023, 3:16 AM MST (10:16 UTC)
In effect from: Jan 30, 2023, 9:00 PM MST
Expired: Jan 31, 2023, 8:00 AM MST
In force: 11 hr
Issued by: NWS Denver/Boulder, CO

Counties Adams County, CO, Arapahoe County, CO, Broomfield County, CO, Denver County, CO, Douglas County, CO, Elbert County, CO, Lincoln County, CO, Logan County, CO, Morgan County, CO, Phillips County, CO, Sedgwick County, CO, Washington County, CO, Weld County, CO

The radar

The Denver radar (KFTG), 61 km from the middle of the area, began a volume at 10:17 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

Dodge City, (KDDC), launched 00:00Z, 10.3 hours before the alert went out and 423 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: 566 m above ground
0-6 km bulk shear: 83 kt
0-1 km storm-relative helicity: 239 m²/s²
0-3 km storm-relative helicity: 409 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 wind chill advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Denver/Boulder, CO wrote its last area forecast discussion before this wind chill advisory went out at Jan 29, 3:28 PM MST, 11 hours 48 minutes earlier.

Area forecast discussion, Jan 29, 3:28 PM MST, 11 hours 48 minutes before

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Hazardous weather outlook, Jan 29, 10:43 AM MST, 16 hours 33 minutes before

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<body>
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    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
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      <p id="message2">
        Please try again in a few minutes.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

Everything else NWS Denver/Boulder, CO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 30, 11:26 AM MST	Winter Weather Advisory	BOU	Adams, Arapahoe, Boulder, Broomfield, Denver, Douglas and 2 more	9 hr

Nearby

Wind Chill Advisories in Colorado, 2023 Every wind chill advisory in 2023

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.