Alert archive / Colorado / Flash Flood Watches in 2013

Flash Flood Watch 18, NWS Pueblo, CO

September 11, 201311 counties in Colorado

NWS Pueblo, CO issued this flash flood watch at Sep 11, 2013, 3:58 PM MDT for 11 counties in Colorado. It took effect at Sep 12, 2013, 1:33 AM MDT. It was in force for 26 hr.

The area

The counties it named.

The facts

Issued
Sep 11, 2013, 3:58 PM MDT (21:58 UTC)
In effect from
Sep 12, 2013, 1:33 AM MDT
Expired
Sep 13, 2013, 3:05 AM MDT
In force
26 hr
Issued by
NWS Pueblo, CO
Flood severity
None

Counties Alamosa County, CO, Chaffee County, CO, Costilla County, CO, Custer County, CO, El Paso County, CO, Fremont County, CO, Huerfano County, CO, Las Animas County, CO, Pueblo County, CO, Saguache County, CO, Teller County, CO

The radar

The Pueblo radar (KPUX), 101 km from the middle of the area, began a volume at 21:58 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

Denver, CO (KDEN), launched 12:00Z, 10.0 hours before the alert went out and 262 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, Denver, CO at 12:00Z on 2013-09-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 123 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, Denver, CO at 12:00Z on 2013-09-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 square meters per square second.193958Sfc1 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
123 J/kg
Mixed-layer CIN
-21 J/kg
Mixed-layer LCL
572 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
8 m²/s²
0-3 km storm-relative helicity
28 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 flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Pueblo, CO wrote its last area forecast discussion before this flash flood watch went out at Sep 11, 3:52 PM MDT, 6 minutes earlier.

Area forecast discussion, Sep 11, 3:52 PM MDT, 6 minutes before
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Hazardous weather outlook, Sep 11, 11:51 AM MDT, 4 hours 7 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 Pueblo, CO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 10, 8:28 PM MDTAreal Flood AdvisoryPUBEl Paso2 hr
Sep 11, 7:47 AM MDTAreal Flood AdvisoryPUBEl Paso3 hr
Sep 11, 9:05 AM MDTFlash Flood WatchPUBEl Paso, Fremont, Teller15 hr
Sep 11, 9:43 AM MDTFlash Flood WarningPUBEl Paso3 hr
Sep 11, 9:44 AM MDTAreal Flood AdvisoryPUBFremont106 min

Nearby

Flash Flood Watches in Colorado, 2013Every flash flood watch in 2013

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.