Alert archive / Iowa / Wind Chill Advisories in 2019

Wind Chill Advisory 6, NWS Quad Cities, IA

February 24, 2019Buchanan County, Delaware County, Dubuque County, Iowa; Jo Daviess County, Stephenson County, Illinois

NWS Quad Cities, IA issued this wind chill advisory at Feb 24, 2019, 9:18 PM CST for Buchanan County, Delaware County, Dubuque County, Iowa; Jo Daviess County, Stephenson County, Illinois. It took effect at Feb 25, 2019, 12:00 AM CST. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued
Feb 24, 2019, 9:18 PM CST (03:18 UTC)
In effect from
Feb 25, 2019, 12:00 AM CST
Expired
Feb 25, 2019, 9:00 AM CST
In force
9 hr
Issued by
NWS Quad Cities, IA

Counties Buchanan County, IA, Delaware County, IA, Dubuque County, IA, Jo Daviess County, IL, Stephenson County, IL

The radar

The Quad Cities radar (KDVN), 92 km from the middle of the area, began a volume at 03:16 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

Lincoln, IL (KILX), launched 00:00Z, 3.3 hours before the alert went out and 312 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-pSkew-T log-p diagram, Lincoln, IL at 00:00Z on 2019-02-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 00:00Z on 2019-02-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -53 square meters per square second.1939587897117136156Sfc1 km3 km6 km9 kmRMLM
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
1142 m above ground
0-6 km bulk shear
99 kt
0-1 km storm-relative helicity
-53 m²/s²
0-3 km storm-relative helicity
-6 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 Quad Cities, IA wrote its last area forecast discussion before this wind chill advisory went out at Feb 24, 2:14 PM CST, 7 hours 4 minutes earlier.

Area forecast discussion, Feb 24, 2:14 PM CST, 7 hours 4 minutes before
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Hazardous weather outlook, Feb 24, 2:36 PM CST, 6 hours 42 minutes before
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</head>
<body>
  <main class="wrap">
    <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.
      </p>
      <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 Quad Cities, IA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 24, 7:48 PM CSTRiver Flood WarningDVNLouisa60 hr
Feb 25, 10:50 AM CSTRiver Flood WatchDVNLouisa23 hr
Feb 24, 8:10 PM CSTRiver Flood WarningDVNWhiteside34 hr
Feb 25, 11:45 AM CSTRiver Flood WarningDVNStephenson30 hr

Nearby

Wind Chill Advisories in Iowa, 2019Wind Chill Advisories in Illinois, 2019Every wind chill advisory 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.