Alert archive / Iowa / Flood Watches in 2022

Flood Watch 2, NWS Quad Cities, IA

July 6, 20225 counties in Iowa; Hancock County, Henderson County, McDonough County, Illinois; Clark County, Scotland County, Missouri

NWS Quad Cities, IA issued this flood watch at Jul 6, 2022, 8:02 PM CDT for 5 counties in Iowa; Hancock County, Henderson County, McDonough County, Illinois; Clark County, Scotland County, Missouri. It took effect at Jul 7, 2022, 12:00 AM CDT. It was in force for 29 hr.

The area

The counties it named.

The facts

Issued
Jul 6, 2022, 8:02 PM CDT (01:02 UTC)
In effect from
Jul 7, 2022, 12:00 AM CDT
Expired
Jul 8, 2022, 5:18 AM CDT
In force
29 hr
Issued by
NWS Quad Cities, IA
Flood severity
None

Counties Des Moines County, IA, Henry County, IA, Jefferson County, IA, Lee County, IA, Van Buren County, IA, Hancock County, IL, Henderson County, IL, McDonough County, IL, Clark County, MO, Scotland County, MO

The radar

The Quad Cities radar (KDVN), 127 km from the middle of the area, began a volume at 01:02 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

Topeka, KS (KTOP), launched 00:00Z, 1.0 hours before the alert went out and 402 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, Topeka, KS at 00:00Z on 2022-07-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1835 joules per kilogram.LCLLFCEL10008507005003002001001 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, Topeka, KS at 00:00Z on 2022-07-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 172 square meters per square second.1939Sfc1 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
1835 J/kg
Mixed-layer CIN
-146 J/kg
Mixed-layer LCL
1188 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
172 m²/s²
0-3 km storm-relative helicity
366 m²/s²
Significant tornado parameter
0.5
Supercell composite
16.1

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flood watch 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 flood watch went out at Jul 6, 7:05 PM CDT, 57 minutes earlier.

Area forecast discussion, Jul 6, 7:05 PM CDT, 57 minutes before
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Hazardous weather outlook, Jul 6, 6:52 AM CDT, 13 hours 10 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.
      </p>
      <p class="small" id="detail">
        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
Jul 7, 9:00 AM CDTSpecial Weather StatementDVNKeokuk45 min
Jul 7, 5:38 PM CDTSpecial Weather StatementDVNBenton, Buchanan, Cedar, Clinton, Delaware, Iowa and 4 more112 min
Jul 7, 6:56 PM CDTSpecial Weather StatementDVNJackson34 min

Nearby

Flood Watches in Iowa, 2022Flood Watches in Illinois, 2022Flood Watches in Missouri, 2022Every flood watch in 2022

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.