Alert archive / Arkansas / Blowing Dust Advisories in 2017

Blowing Dust Advisory 2, NWS Memphis, TN

May 17, 20178 counties in Arkansas

NWS Memphis, TN issued this blowing dust advisory at May 17, 2017, 1:32 PM CDT for 8 counties in Arkansas. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
May 17, 2017, 1:32 PM CDT (18:32 UTC)
Expired
May 17, 2017, 6:00 PM CDT
In force
4 hr
Issued by
NWS Memphis, TN

Counties Clay County, AR, Craighead County, AR, Cross County, AR, Greene County, AR, Lawrence County, AR, Mississippi County, AR, Poinsett County, AR, Randolph County, AR

The radar

The Memphis radar (KNQA), 95 km from the middle of the area, began a volume at 18:31 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 (KBYH), launched 12:00Z, 6.5 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-pSkew-T log-p diagram, Little Rock, AR at 12:00Z on 2017-05-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 11 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, Little Rock, AR at 12:00Z on 2017-05-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 120 square meters per square second.1939587897Sfc1 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
11 J/kg
Mixed-layer CIN
-25 J/kg
Mixed-layer LCL
824 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
120 m²/s²
0-3 km storm-relative helicity
130 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 blowing dust 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 blowing dust advisory went out at May 17, 12:43 PM CDT, 49 minutes earlier.

Area forecast discussion, May 17, 12:43 PM CDT, 49 minutes before
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Hazardous weather outlook, May 17, 3:08 AM CDT, 10 hours 24 minutes before
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In the hours before

Special weather statement, May 17, 12:48 PM CDT, 44 minutes before
Special Weather Statement
National Weather Service Memphis TN
1248 PM CDT Wed May 17 2017

ARZ008-009-017-018-026>028-035-036-048-049-058-MOZ113-115-MSZ007-
010-TNZ001-172300-
Randolph-Clay-Lawrence-Greene-Craighead-Poinsett-Mississippi-
Cross-Crittenden-St. Francis-Lee AR-Phillips-Dunklin-Pemiscot-
Tunica-Coahoma-Lake-
Including the cities of Pocahontas, Piggott, Corning,
Walnut Ridge, Paragould, Jonesboro, Harrisburg, Blytheville,
Wynne, West Memphis, Forrest City, Marianna, Helena, West Helena,
Kennett, Caruthersville, Tunica, Clarksdale, and Tiptonville
1248 PM CDT Wed May 17 2017

...Blowing Dust will Reduce Visibilities Today...

Strong winds will combine with dry top soil from freshly plowed
fields in open areas to produce blowing dust today. This will
mainly impact the delta areas of northeast and east Arkansas, the
Missouri Bootheel, far northwest Tennessee, and far northwest
Mississippi.

Strong winds between 20 and 30 mph, with gusts up to 40 mph, will
result in blowing dust that will reduce visibilities to 2 mile or
less at times. Localized visibility reductions below one half mile
at times will be possible.

Please reduce highway speeds and allow extra spacing between
vehicles ahead while driving today in areas where blowing dust is
occurring. Remember, visibilities may be reduced sharply in short
distances.

JLH

The office that day

Everything else NWS Memphis, TN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 17, 2:28 AM CDTWind AdvisoryMEGDyer, Lake, Lauderdale, Obion, Shelby, Tipton16 hr
May 17, 5:45 PM CDTSpecial Weather StatementMEGCross30 min
May 17, 5:47 PM CDTSpecial Weather StatementMEGMississippi28 min
May 17, 6:37 PM CDTSevere Thunderstorm WarningMEGCrittenden, Cross, St. Francis38 min

Nearby

Blowing Dust Advisories in Arkansas, 2017Every blowing dust advisory in 2017

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.