Alert archive / Tennessee / Special Weather Statements in 2017

Special Weather Statement, NWS Morristown, TN

July 5, 2017Polk County, Tennessee

NWS Morristown, TN issued this special weather statement at Jul 5, 2017, 2:17 PM EDT for Polk County, Tennessee. It was in force for 43 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 5, 2017, 2:17 PM EDT (18:17 UTC)
Expired: Jul 5, 2017, 3:00 PM EDT
In force: 43 min
Issued by: NWS Morristown, TN

County Polk County, TN

The radar

The Northeast Alabama radar (KHTX), 136 km from the middle of the area, began a volume at 18:19 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

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 6.3 hours before the alert went out and 190 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: 1179 J/kg
Mixed-layer CIN: -28 J/kg
Mixed-layer LCL: 912 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: -80 m²/s²
0-3 km storm-relative helicity: -71 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 5, 1:19 PM EDT, 58 minutes earlier.

Area forecast discussion, Jul 5, 1:19 PM EDT, 58 minutes before

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Hazardous weather outlook, Jul 5, 3:40 AM EDT, 10 hours 37 minutes before

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In the hours before

Special weather statement, Jul 5, 1:02 PM EDT, 1 hour 15 minutes before

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Special weather statement, Jul 5, 1:29 PM EDT, 48 minutes before

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Special weather statement, Jul 5, 1:51 PM EDT, 26 minutes before

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Special weather statement, Jul 5, 1:53 PM EDT, 24 minutes before

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Special weather statement, Jul 5, 2:06 PM EDT, 11 minutes before

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Special weather statement, Jul 5, 2:17 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 4, 8:10 PM EDT	Special Weather Statement	MRX	Monroe	65 min
Jul 4, 8:57 PM EDT	Special Weather Statement	MRX	Monroe	48 min
Jul 5, 1:02 PM EDT	Special Weather Statement	MRX	Bledsoe	43 min
Jul 5, 1:29 PM EDT	Special Weather Statement	MRX	Bledsoe	46 min
Jul 5, 1:51 PM EDT	Special Weather Statement	MRX	Bradley	24 min
Jul 5, 1:53 PM EDT	Special Weather Statement	MRX	Meigs, Rhea	37 min
Jul 5, 2:06 PM EDT	Special Weather Statement	MRX	Anderson, Morgan	39 min
Jul 5, 2:35 PM EDT	Areal Flood Advisory	MRX	Anderson, Morgan, Roane	115 min
Jul 5, 2:40 PM EDT	Special Weather Statement	MRX	Loudon	35 min
Jul 5, 2:42 PM EDT	Special Weather Statement	MRX	Union	33 min
Jul 5, 2:49 PM EDT	Special Weather Statement	MRX	Monroe, Polk	26 min
Jul 5, 2:53 PM EDT	Special Weather Statement	MRX	Claiborne	37 min
Jul 5, 3:13 PM EDT	Special Weather Statement	MRX	Blount, Knox	32 min
Jul 5, 3:21 PM EDT	Special Weather Statement	MRX	Grainger, Jefferson, Union	24 min
Jul 5, 3:27 PM EDT	Areal Flood Advisory	MRX	Bradley, Hamilton	2 hr
Jul 5, 3:31 PM EDT	Special Weather Statement	MRX	Hamilton	29 min
Jul 5, 4:01 PM EDT	Special Weather Statement	MRX	Cocke, Hamblen, Jefferson, Sevier	44 min
Jul 5, 4:03 PM EDT	Special Weather Statement	MRX	Bradley	42 min
Jul 5, 4:04 PM EDT	Special Weather Statement	MRX	Hawkins	41 min
Jul 5, 4:07 PM EDT	Special Weather Statement	MRX	Meigs	38 min
Jul 5, 4:21 PM EDT	Special Weather Statement	MRX	Bledsoe, Marion, Sequatchie	39 min
Jul 5, 4:41 PM EDT	Special Weather Statement	MRX	Washington	49 min
Jul 5, 4:47 PM EDT	Special Weather Statement	MRX	Sullivan	43 min
Jul 5, 4:48 PM EDT	Special Weather Statement	MRX	Bledsoe, Meigs, Rhea	42 min
Jul 5, 4:51 PM EDT	Special Weather Statement	MRX	Greene	39 min
Jul 5, 5:08 PM EDT	Severe Thunderstorm Warning	MRX	Bledsoe, Meigs, Rhea, Roane	27 min
Jul 5, 5:23 PM EDT	Special Weather Statement	MRX	Carter, Sullivan	37 min
Jul 5, 5:32 PM EDT	Areal Flood Advisory	MRX	Bledsoe, Sequatchie	118 min
Jul 5, 5:50 PM EDT	Special Weather Statement	MRX	Loudon, Roane	40 min
Jul 5, 5:55 PM EDT	Special Weather Statement	MRX	Carter, Johnson	50 min
Jul 5, 5:14 PM EDT	Special Weather Statement	MRX	Russell	46 min
Jul 5, 3:51 PM EDT	Special Weather Statement	MRX	Clay	39 min
Jul 5, 4:37 PM EDT	Special Weather Statement	MRX	Madison	38 min

Nearby

Special Weather Statements in Tennessee, 2017 Every special weather statement 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.