Alert archive / Mississippi / Flash Flood Warnings in 2009

Flash Flood Warning 107, NWS Jackson, MS

September 15, 20095 counties in Mississippi

NWS Jackson, MS issued this flash flood warning at Sep 15, 2009, 9:28 AM CDT for 5 counties in Mississippi. It was in force for 84 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Sep 15, 2009, 9:28 AM CDT (14:28 UTC)
Expired: Sep 15, 2009, 10:52 AM CDT
In force: 84 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Flood severity: None

Counties Bolivar County, MS, Carroll County, MS, Grenada County, MS, Leflore County, MS, Sunflower County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 153 km from the middle of the area, began a volume at 14:31 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

Little Rock, AR (KLZK), launched 12:00Z, 2.5 hours before the alert went out and 137 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: 567 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 453 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 37 m²/s²
0-3 km storm-relative helicity: 62 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 warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Jackson, MS wrote its last area forecast discussion before this flash flood warning went out at Sep 15, 4:36 AM CDT, 4 hours 52 minutes earlier.

Area forecast discussion, Sep 15, 4:36 AM CDT, 4 hours 52 minutes before

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Hazardous weather outlook, Sep 15, 5:48 AM CDT, 3 hours 40 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>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 14, 7:10 PM CDT	Flash Flood Warning	JAN	Hinds, Rankin	58 min
Sep 14, 7:17 PM CDT	Severe Thunderstorm Warning	JAN	Hinds, Madison, Warren, Yazoo	58 min
Sep 14, 7:28 PM CDT	Severe Thunderstorm Warning	JAN	Copiah, Hinds	47 min
Sep 14, 8:28 PM CDT	Flash Flood Warning	JAN	Sunflower, Washington	2 hr
Sep 14, 8:45 PM CDT	Flash Flood Warning	JAN	Hinds	2 hr
Sep 15, 3:44 AM CDT	Flash Flood Watch	JAN	Bolivar, Grenada, Humphreys, Issaquena, Leflore, Sharkey and 2 more	4 days
Sep 15, 3:41 PM CDT	Flash Flood Warning	JAN	Carroll, Holmes, Humphreys, Leflore	2 hr
Sep 15, 3:52 PM CDT	Flash Flood Warning	JAN	Carroll, Grenada	3 hr
Sep 15, 5:33 PM CDT	Flash Flood Warning	JAN	Jasper, Smith	117 min
Sep 15, 4:08 PM CDT	Flash Flood Warning	JAN	Chicot	2 hr

Nearby

Flash Flood Warnings in Mississippi, 2009 Every flash flood warning in 2009

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.