Alert archive / Missouri / Excessive Heat Warnings in 2011

Excessive Heat Warning 5, NWS Kansas City, MO

July 29, 201137 counties in Missouri; 7 counties in Kansas

NWS Kansas City, MO issued this excessive heat warning at Jul 29, 2011, 4:08 PM CDT for 37 counties in Missouri; 7 counties in Kansas. It took effect at Jul 31, 2011, 12:00 PM CDT. It was in force for 3 days. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 29, 2011, 4:08 PM CDT (21:08 UTC)
In effect from
Jul 31, 2011, 12:00 PM CDT
Expired
Aug 3, 2011, 7:00 PM CDT
In force
3 days
Issued by
NWS Kansas City, MO
All 44 counties

Atchison County, KS, Doniphan County, KS, Johnson County, KS, Leavenworth County, KS, Linn County, KS, Miami County, KS, Wyandotte County, KS, Adair County, MO, Andrew County, MO, Atchison County, MO, Bates County, MO, Buchanan County, MO, Caldwell County, MO, Carroll County, MO, Cass County, MO, Chariton County, MO, Clay County, MO, Clinton County, MO, Cooper County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Henry County, MO, Holt County, MO, Howard County, MO, Jackson County, MO, Johnson County, MO, Lafayette County, MO, Linn County, MO, Livingston County, MO, Macon County, MO, Mercer County, MO, Nodaway County, MO, Pettis County, MO, Platte County, MO, Putnam County, MO, Randolph County, MO, Ray County, MO, Saline County, MO, Schuyler County, MO, Sullivan County, MO, Worth County, MO

The radar

The Pleasant Hill radar (KEAX), 84 km from the middle of the area, began a volume at 21:11 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 12:00Z, 9.1 hours before the alert went out and 154 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 12:00Z on 2011-07-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 186 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 12:00Z on 2011-07-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -61 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
186 J/kg
Mixed-layer CIN
-148 J/kg
Mixed-layer LCL
1088 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
-61 m²/s²
0-3 km storm-relative helicity
47 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 excessive heat warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Kansas City, MO wrote its last area forecast discussion before this excessive heat warning went out at Jul 29, 12:44 PM CDT, 3 hours 24 minutes earlier.

Area forecast discussion, Jul 29, 12:44 PM CDT, 3 hours 24 minutes before
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Hazardous weather outlook, Jul 29, 1:05 PM CDT, 3 hours 3 minutes before
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  <link rel="stylesheet" href="index.css">
</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>
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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 Kansas City, MO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 28, 7:29 PM CDTSpecial Weather StatementEAXCass46 min
Jul 28, 8:31 PM CDTSevere Thunderstorm WarningEAXCass27 min
Jul 29, 12:27 AM CDTSevere Thunderstorm WarningEAXCarroll, Ray33 min
Jul 29, 1:08 AM CDTSpecial Weather StatementEAXDaviess37 min
Jul 29, 1:45 AM CDTSpecial Weather StatementEAXLinn30 min
Jul 29, 1:56 AM CDTSevere Thunderstorm WarningEAXAdair, Linn, Macon, Sullivan34 min
Jul 29, 2:23 AM CDTSevere Thunderstorm WarningEAXAdair, Linn, Macon, Putnam, Sullivan43 min
Jul 29, 2:44 AM CDTSevere Thunderstorm WarningEAXAdair, Putnam, Schuyler, Sullivan41 min
Jul 29, 3:24 AM CDTExcessive Heat WatchEAXAdair, Andrew, Atchison, Bates, Buchanan, Caldwell and 31 more36 hr
Jul 28, 7:56 PM CDTSevere Thunderstorm WarningEAXJohnson, Miami34 min
Jul 28, 11:35 PM CDTSpecial Weather StatementEAXLeavenworth40 min

Nearby

Excessive Heat Warnings in Missouri, 2011Excessive Heat Warnings in Kansas, 2011Every excessive heat warning in 2011

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.