Alert archive / Mississippi / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 108, NWS Jackson, MS

May 15, 2015Carroll County, Grenada County, Montgomery County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at May 15, 2015, 5:21 PM CDT for Carroll County, Grenada County, Montgomery County, Mississippi. 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 counties it named.

The facts

Issued: May 15, 2015, 5:21 PM CDT (22:21 UTC)
Expired: May 15, 2015, 6:00 PM CDT
In force: 39 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Carroll County, MS, Grenada County, MS, Montgomery County, MS

The radar

The Columbus AFB radar (KGWX), 139 km from the middle of the area, began a volume at 22:20 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 12:00Z, 10.4 hours before the alert went out and 141 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: 1158 J/kg
Mixed-layer CIN: -49 J/kg
Mixed-layer LCL: 898 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 90 m²/s²
0-3 km storm-relative helicity: 67 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 Jackson, MS wrote its last area forecast discussion before this severe thunderstorm warning went out at May 15, 3:41 PM CDT, 1 hour 40 minutes earlier.

Area forecast discussion, May 15, 3:41 PM CDT, 1 hour 40 minutes before

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Hazardous weather outlook, May 15, 3:08 PM CDT, 2 hours 13 minutes before

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In the hours before

Special weather statement, May 15, 4:53 PM CDT, 28 minutes before

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Local storm report, May 15, 4:55 PM CDT, 26 minutes before

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Local storm report, May 15, 5:07 PM CDT, 14 minutes before

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Local storm report, May 15, 5:09 PM CDT, 12 minutes before

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Special weather statement, May 15, 5:09 PM CDT, 12 minutes before

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Local storm report, May 15, 5:12 PM CDT, 9 minutes before

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The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 15, 11:47 AM CDT	Special Weather Statement	JAN	Marion	43 min
May 15, 12:33 PM CDT	Special Weather Statement	JAN	Covington	27 min
May 15, 12:43 PM CDT	Special Weather Statement	JAN	Lawrence	32 min
May 15, 12:58 PM CDT	Special Weather Statement	JAN	Covington	32 min
May 15, 1:28 PM CDT	Severe Thunderstorm Warning	JAN	Simpson	27 min
May 15, 1:49 PM CDT	Special Weather Statement	JAN	Rankin	41 min
May 15, 2:20 PM CDT	Special Weather Statement	JAN	Adams	40 min
May 15, 2:28 PM CDT	Special Weather Statement	JAN	Jefferson	47 min
May 15, 2:28 PM CDT	Severe Thunderstorm Warning	JAN	Hinds, Rankin	17 min
May 15, 2:35 PM CDT	Special Weather Statement	JAN	Franklin	25 min
May 15, 3:49 PM CDT	Special Weather Statement	JAN	Leake	41 min
May 15, 4:04 PM CDT	Special Weather Statement	JAN	Grenada	41 min
May 15, 4:27 PM CDT	Special Weather Statement	JAN	Humphreys	33 min
May 15, 4:45 PM CDT	Special Weather Statement	JAN	Montgomery	45 min
May 15, 4:50 PM CDT	Special Weather Statement	JAN	Lauderdale	25 min
May 15, 4:53 PM CDT	Special Weather Statement	JAN	Carroll, Leflore, Montgomery	52 min
May 15, 5:38 PM CDT	Special Weather Statement	JAN	Bolivar	52 min
May 15, 5:54 PM CDT	Special Weather Statement	JAN	Webster	51 min
May 15, 6:00 PM CDT	Special Weather Statement	JAN	Grenada	30 min
May 15, 6:26 PM CDT	Special Weather Statement	JAN	Winston	34 min
May 15, 3:39 PM CDT	Special Weather Statement	JAN	Franklin	36 min
May 15, 4:20 PM CDT	Special Weather Statement	JAN	Richland	40 min
May 15, 5:09 PM CDT	Special Weather Statement	JAN	Chicot	36 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 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.