Alert archive / Arkansas / Special Weather Statements in 2021

Special Weather Statement, NWS Memphis, TN

July 16, 2021Crittenden County, Arkansas

NWS Memphis, TN issued this special weather statement at Jul 16, 2021, 1:27 PM CDT for Crittenden County, Arkansas. It was in force for 33 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 16, 2021, 1:27 PM CDT (18:27 UTC)
Expired: Jul 16, 2021, 2:00 PM CDT
In force: 33 min
Issued by: NWS Memphis, TN

County Crittenden County, AR

The radar

The Memphis radar (KNQA), 45 km from the middle of the area, began a volume at 18:25 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, 6.5 hours before the alert went out and 68 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: 681 J/kg
Mixed-layer CIN: -53 J/kg
Mixed-layer LCL: 567 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: -6 m²/s²
0-3 km storm-relative helicity: 16 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jul 16, 12:35 PM CDT, 52 minutes earlier.

Area forecast discussion, Jul 16, 12:35 PM CDT, 52 minutes before

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Hazardous weather outlook, Jul 16, 3:15 AM CDT, 10 hours 12 minutes before

Hazardous Weather Outlook...Corrected
National Weather Service Memphis TN
315 AM CDT Fri Jul 16 2021

ARZ009-018-026>028-035-036-048-049-058-MOZ113-115-MSZ001>017-
020>024-TNZ001>004-019>022-048>055-088>092-171015-
Alcorn-Benton MS-Benton TN-Calhoun-Carroll-Chester-Chickasaw-Clay-
Coahoma-Craighead-Crittenden-Crockett-Cross-DeSoto-Decatur-
Dunklin-Dyer-Fayette-Gibson-Greene-Hardeman-Hardin-Haywood-
Henderson-Henry-Itawamba-Lafayette-Lake-Lauderdale-Lee AR-Lee MS-
Madison-Marshall-McNairy-Mississippi-Monroe-Obion-Panola-Pemiscot-
Phillips-Poinsett-Pontotoc-Prentiss-Quitman-Shelby-St. Francis-
Tallahatchie-Tate-Tippah-Tipton-Tishomingo-Tunica-Union-Weakley-
Yalobusha-
306 AM CDT Fri Jul 16 2021

This hazardous weather outlook is for portions of East Arkansas...
the Missouri Bootheel...North Mississippi...and West Tennessee.

.DAY ONE...Today and Tonight

There is a Marginal Risk for severe thunderstorms over northeast
Arkansas and the Missouri bootheel this afternoon. Damaging winds and
locally heavy rainfall will be the primary threats.

There is a Marginal Risk for flash flooding along and north of
Interstate 40 this afternoon.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

There is a Marginal Risk for flash flooding over the all the Midsouth
on Saturday. The threat for locally heavy rainfall will shift to north
Mississippi Sunday morning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated at this time.

PWB

In the hours before

Special weather statement, Jul 16, 1:27 PM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 16, 1:33 PM CDT	Special Weather Statement	MEG	Calhoun	27 min
Jul 16, 1:57 PM CDT	Special Weather Statement	MEG	Pontotoc	33 min
Jul 16, 2:27 PM CDT	Special Weather Statement	MEG	Chickasaw	33 min
Jul 16, 2:56 PM CDT	Special Weather Statement	MEG	Itawamba, Lee, Monroe	34 min
Jul 16, 3:07 PM CDT	Special Weather Statement	MEG	Monroe	53 min
Jul 16, 5:02 PM CDT	Special Weather Statement	MEG	DeSoto	28 min
Jul 16, 1:58 PM CDT	Special Weather Statement	MEG	Shelby	32 min
Jul 16, 3:21 PM CDT	Special Weather Statement	MEG	Haywood	24 min
Jul 16, 3:48 PM CDT	Special Weather Statement	MEG	Haywood, Madison	27 min
Jul 16, 4:22 PM CDT	Special Weather Statement	MEG	Fayette	38 min

Nearby

Special Weather Statements in Arkansas, 2021 Every special weather statement in 2021

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.