Alert archive / Arkansas / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 172, NWS Memphis, TN

July 8, 20154 counties in Arkansas

NWS Memphis, TN issued this severe thunderstorm warning at Jul 8, 2015, 8:18 PM CDT for 4 counties in Arkansas. It was in force for 57 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 8, 2015, 8:18 PM CDT (01:18 UTC)
Expired: Jul 8, 2015, 9:15 PM CDT
In force: 57 min
Issued by: NWS Memphis, TN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Clay County, AR, Greene County, AR, Lawrence County, AR, Randolph County, AR

The radar

The Memphis radar (KNQA), 127 km from the middle of the area, began a volume at 01:18 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 00:00Z, 1.3 hours before the alert went out and 171 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: 608 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 1326 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 128 m²/s²
0-3 km storm-relative helicity: 241 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 severe thunderstorm warning 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 severe thunderstorm warning went out at Jul 8, 6:19 PM CDT, 1 hour 59 minutes earlier.

Area forecast discussion, Jul 8, 6:19 PM CDT, 1 hour 59 minutes before

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Hazardous weather outlook, Jul 8, 5:26 PM CDT, 2 hours 52 minutes before

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In the hours before

Special weather statement, Jul 8, 5:37 PM CDT, 2 hours 41 minutes before

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Special weather statement, Jul 8, 6:36 PM CDT, 1 hour 42 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 8, 9:17 PM CDT	River Flood Advisory	MEG	Coahoma, Tunica	21 days
Jul 8, 7:39 PM CDT	Severe Thunderstorm Warning	MEG	Lawrence, Randolph	66 min
Jul 8, 8:47 PM CDT	Special Weather Statement	MEG	Clay, Greene	43 min
Jul 8, 8:55 PM CDT	Special Weather Statement	MEG	Craighead	50 min
Jul 8, 9:22 PM CDT	Special Weather Statement	MEG	Clay, Greene	68 min
Jul 8, 9:39 PM CDT	Special Weather Statement	MEG	Craighead	36 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2015 Every severe thunderstorm warning in 2015

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.