Alert archive / Kentucky / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 325, NWS Paducah, KY

July 12, 20116 counties in Kentucky; Massac County, Pope County, Illinois

NWS Paducah, KY issued this severe thunderstorm warning at Jul 12, 2011, 9:33 PM CDT for 6 counties in Kentucky; Massac County, Pope County, Illinois. It was in force for 27 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: Jul 12, 2011, 9:33 PM CDT (02:33 UTC)
Expired: Jul 12, 2011, 10:00 PM CDT
In force: 27 min
Issued by: NWS Paducah, KY
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Massac County, IL, Pope County, IL, Crittenden County, KY, Graves County, KY, Livingston County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY

The radar

The Paducah radar (KPAH), 30 km from the middle of the area, began a volume at 02:36 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 00:00Z, 2.6 hours before the alert went out and 288 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: 2396 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 1966 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 50 m²/s²
0-3 km storm-relative helicity: 139 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 6.9

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Paducah, KY wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 12, 9:25 PM CDT, 8 minutes earlier.

Area forecast discussion, Jul 12, 9:25 PM CDT, 8 minutes before

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Hazardous weather outlook, Jul 12, 9:10 PM CDT, 23 minutes before

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</head>
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    <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.
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        Please try again in a few minutes.
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In the hours before

Local storm report, Jul 12, 6:09 PM CDT, 3 hours 24 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PADUCAH KY
609 PM CDT TUE JUL 12 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0556 PM     HEAVY RAIN       PRINCETON               38.36N 87.57W
07/12/2011  M2.50 INCH       GIBSON             IN   PUBLIC

&&

MY

Local storm report, Jul 12, 6:18 PM CDT, 3 hours 15 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PADUCAH KY
618 PM CDT TUE JUL 12 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0617 PM     HEAVY RAIN       EVANSVILLE              37.98N 87.54W
07/12/2011  E0.00 INCH       VANDERBURGH        IN   EMERGENCY MNGR

            FLOODING ON THE LLOYD EXPRESSWAY IN EVANSVILLE

&&

MY

Local storm report, Jul 12, 6:25 PM CDT, 3 hours 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PADUCAH KY
625 PM CDT TUE JUL 12 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0615 PM     FLOOD            EVANSVILLE              37.98N 87.54W
07/12/2011                   VANDERBURGH        IN   EMERGENCY MNGR

            FLOODING ON LLOYD EXPRESSWAY AND MARYLAND ST IN SW
            EVANSVILLE.

&&

DP

Local storm report, Jul 12, 6:26 PM CDT, 3 hours 7 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PADUCAH KY
626 PM CDT TUE JUL 12 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0620 PM     FLOOD            PETERSBURG              38.49N 87.28W
07/12/2011                   PIKE               IN   LAW ENFORCEMENT

            SEVERAL ROADS FLOODING IN PETERSBURG ANS OTWELL.

&&

DP

Local storm report, Jul 12, 8:20 PM CDT, 1 hour 13 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PADUCAH KY
820 PM CDT TUE JUL 12 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0501 PM     TSTM WND DMG     FRANCISCO               38.33N 87.45W
07/12/2011                   GIBSON             IN   PUBLIC

            TREES AND POWER LINES DOWN

&&

MY

Local storm report, Jul 12, 8:21 PM CDT, 1 hour 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PADUCAH KY
821 PM CDT TUE JUL 12 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0600 PM     HEAVY RAIN       FORT BRANCH             38.25N 87.57W
07/12/2011  M2.75 INCH       GIBSON             IN   PUBLIC

&&

MY

The office that day

Everything else NWS Paducah, KY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 12, 7:59 PM CDT	Areal Flood Advisory	PAH	Daviess, Henderson	2 hr
Jul 12, 9:05 PM CDT	Areal Flood Advisory	PAH	Crittenden, Livingston	55 min
Jul 12, 9:43 PM CDT	Areal Flood Advisory	PAH	Ballard, Graves, Livingston, McCracken, Marshall	62 min
Jul 12, 10:01 PM CDT	Areal Flood Advisory	PAH	Caldwell, Crittenden, Hopkins, Livingston, Lyon, Webster	59 min
Jul 12, 10:52 PM CDT	Areal Flood Advisory	PAH	Christian, Trigg	53 min
Jul 12, 11:01 PM CDT	Areal Flood Advisory	PAH	Carlisle, Hickman	59 min
Jul 12, 7:15 PM CDT	Areal Flood Advisory	PAH	Franklin, Jefferson, Perry	2 hr
Jul 12, 8:34 PM CDT	Flash Flood Warning	PAH	Jackson, Williamson	86 min
Jul 12, 9:49 PM CDT	Areal Flood Advisory	PAH	Alexander, Pulaski, Union	116 min
Jul 13, 5:05 AM CDT	Areal Flood Advisory	PAH	Ripley	43 min
Jul 13, 5:45 AM CDT	Flash Flood Warning	PAH	Ripley	3 hr

Nearby

Severe Thunderstorm Warnings in Kentucky, 2011 Severe Thunderstorm Warnings in Illinois, 2011 Every severe thunderstorm 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.