Alert archive / Mississippi / Wind Advisories in 2009

Wind Advisory 18, NWS Memphis, TN

December 23, 200922 counties in Mississippi; 20 counties in Tennessee; 12 counties in Arkansas

NWS Memphis, TN issued this wind advisory at Dec 23, 2009, 3:32 PM CST for 22 counties in Mississippi; 20 counties in Tennessee; 12 counties in Arkansas. It took effect at Dec 24, 2009, 12:00 AM CST. It was in force for 36 hr.

The area

The counties it named.

The facts

Issued: Dec 23, 2009, 3:32 PM CST (21:32 UTC)
In effect from: Dec 24, 2009, 12:00 AM CST
Expired: Dec 25, 2009, 12:00 PM CST
In force: 36 hr
Issued by: NWS Memphis, TN

All 54 counties

Clay County, AR, Craighead County, AR, Crittenden County, AR, Cross County, AR, Greene County, AR, Lawrence County, AR, Lee County, AR, Mississippi County, AR, Phillips County, AR, Poinsett County, AR, Randolph County, AR, St. Francis County, AR, Alcorn County, MS, Benton County, MS, Calhoun County, MS, Chickasaw County, MS, Coahoma County, MS, DeSoto County, MS, Itawamba County, MS, Lafayette County, MS, Lee County, MS, Marshall County, MS, Monroe County, MS, Panola County, MS, Pontotoc County, MS, Prentiss County, MS, Quitman County, MS, Tallahatchie County, MS, Tate County, MS, Tippah County, MS, Tishomingo County, MS, Tunica County, MS, Union County, MS, Yalobusha County, MS, Carroll County, TN, Chester County, TN, Crockett County, TN, Decatur County, TN, Dyer County, TN, Fayette County, TN, Gibson County, TN, Hardeman County, TN, Hardin County, TN, Haywood County, TN, Henderson County, TN, Henry County, TN, Lake County, TN, Lauderdale County, TN, Madison County, TN, McNairy County, TN, Obion County, TN, Shelby County, TN, Tipton County, TN, Weakley County, TN

The radar

The Memphis radar (KNQA), 41 km from the middle of the area, began a volume at 21:32 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

Nashville Metro, TN (KBNA), launched 12:00Z, 9.5 hours before the alert went out and 283 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1075 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 114 m²/s²
0-3 km storm-relative helicity: 39 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 wind advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Memphis, TN wrote its last area forecast discussion before this wind advisory went out at Dec 23, 11:45 AM CST, 3 hours 47 minutes earlier.

Area forecast discussion, Dec 23, 11:45 AM CST, 3 hours 47 minutes before

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Hazardous weather outlook, Dec 23, 2:54 AM CST, 12 hours 38 minutes before

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<body>
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    <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.
      </p>
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        Please try again in a few minutes.
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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 Memphis, TN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 23, 9:03 AM CST	River Flood Warning	MEG	Tallahatchie	13 days
Dec 23, 3:32 PM CST	High Wind Watch	MEG	Alcorn, Benton, Calhoun, Chickasaw, Coahoma, DeSoto and 16 more	24 hr
Dec 23, 9:24 AM CST	River Flood Warning	MEG	Clay, Greene	7 days
Dec 23, 2:23 PM CST	Areal Flood Advisory	MEG	Lee, Phillips, St. Francis	3 hr

Nearby

Wind Advisories in Mississippi, 2009 Wind Advisories in Tennessee, 2009 Wind Advisories in Arkansas, 2009 Every wind advisory 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.