Alert archive / Tennessee / Special Weather Statements in 2020

Special Weather Statement, NWS Morristown, TN

July 8, 2020Morgan County, Tennessee

NWS Morristown, TN issued this special weather statement at Jul 8, 2020, 2:21 PM EDT for Morgan County, Tennessee. It was in force for 39 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 8, 2020, 2:21 PM EDT (18:21 UTC)
Expired: Jul 8, 2020, 3:00 PM EDT
In force: 39 min
Issued by: NWS Morristown, TN

County Morgan County, TN

The radar

The Knoxville radar (KMRX), 118 km from the middle of the area, began a volume at 18:21 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, 6.4 hours before the alert went out and 170 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: 1328 J/kg
Mixed-layer CIN: -29 J/kg
Mixed-layer LCL: 792 m above ground
0-6 km bulk shear: 1 kt
0-1 km storm-relative helicity: -7 m²/s²
0-3 km storm-relative helicity: 2 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 Morristown, TN wrote its last area forecast discussion before this special weather statement went out at Jul 8, 1:41 PM EDT, 40 minutes earlier.

Area forecast discussion, Jul 8, 1:41 PM EDT, 40 minutes before

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Hazardous weather outlook, Jul 8, 3:48 AM EDT, 10 hours 33 minutes before

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In the hours before

Special weather statement, Jul 8, 1:18 PM EDT, 1 hour 3 minutes before

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Special weather statement, Jul 8, 1:26 PM EDT, 55 minutes before

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Special weather statement, Jul 8, 1:38 PM EDT, 43 minutes before

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Special weather statement, Jul 8, 2:01 PM EDT, 20 minutes before

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Special weather statement, Jul 8, 2:21 PM EDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 8, 1:18 PM EDT	Special Weather Statement	MRX	Marion	42 min
Jul 8, 1:26 PM EDT	Special Weather Statement	MRX	Bledsoe	34 min
Jul 8, 1:38 PM EDT	Special Weather Statement	MRX	Marion	37 min
Jul 8, 2:01 PM EDT	Special Weather Statement	MRX	Hancock	44 min
Jul 8, 2:54 PM EDT	Areal Flood Advisory	MRX	Morgan	2 hr
Jul 8, 6:34 PM EDT	Special Weather Statement	MRX	Polk	41 min
Jul 8, 7:12 PM EDT	Areal Flood Advisory	MRX	Polk	2 hr
Jul 8, 1:47 PM EDT	Areal Flood Advisory	MRX	Lee	118 min

Nearby

Special Weather Statements in Tennessee, 2020 Every special weather statement in 2020

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.