Alert archive / Tennessee / Special Weather Statements in 2021

Special Weather Statement, NWS Memphis, TN

July 27, 2021Haywood County, Tennessee

NWS Memphis, TN issued this special weather statement at Jul 27, 2021, 3:32 PM CDT for Haywood County, Tennessee. It was in force for 28 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 27, 2021, 3:32 PM CDT (20:32 UTC)
Expired: Jul 27, 2021, 4:00 PM CDT
In force: 28 min
Issued by: NWS Memphis, TN

County Haywood County, TN

The radar

The Memphis radar (KNQA), 35 km from the middle of the area, began a volume at 20:32 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

Little Rock, AR (KLZK), launched 12:00Z, 8.5 hours before the alert went out and 80 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: 2324 J/kg
Mixed-layer CIN: -83 J/kg
Mixed-layer LCL: 1030 m above ground
0-6 km bulk shear: 3 kt
0-1 km storm-relative helicity: -22 m²/s²
0-3 km storm-relative helicity: -25 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 27, 2:55 PM CDT, 37 minutes earlier.

Area forecast discussion, Jul 27, 2:55 PM CDT, 37 minutes before

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Hazardous weather outlook, Jul 27, 3:02 PM CDT, 30 minutes before

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In the hours before

Special weather statement, Jul 27, 2:32 PM CDT, 1 hour before

Special Weather Statement
National Weather Service Memphis TN
232 PM CDT Tue Jul 27 2021

ARZ028-TNZ048-272000-
Mississippi AR-Lauderdale TN-
232 PM CDT Tue Jul 27 2021

...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED UNTIL 300 PM CDT
FOR...

Northeastern Mississippi County in eastern Arkansas...
Northwestern Lauderdale County in western Tennessee...

At 232 PM CDT...a strong thunderstorm producing winds at least 40 mph
was located near Blytheville, moving south at 10 mph.

Very heavy rain along with continuous cloud to ground lightning are
also possible with this thunderstorm.

People in northeastern Mississippi and northwestern Lauderdale
Counties should monitor this storm closely.

LAT...LON 3599 8972 3597 8972 3595 8970 3573 8967
      3575 9000 3600 8992 3600 8983
TIME...MOT...LOC 1932Z 004DEG 11KT 3593 8982

Special weather statement, Jul 27, 3:32 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 27, 2:49 PM CDT	Heat Advisory	MEG	Calhoun, Chickasaw, Coahoma, Itawamba, Lafayette, Lee and 7 more	28 hr
Jul 27, 2:32 PM CDT	Special Weather Statement	MEG	Lauderdale	28 min

Nearby

Special Weather Statements in Tennessee, 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.