Alert archive / Mississippi / Special Weather Statements in 2015

Special Weather Statement, NWS New Orleans, LA

May 20, 2015Pike County, Mississippi

NWS New Orleans, LA issued this special weather statement at May 20, 2015, 3:00 PM CDT for Pike County, Mississippi. It was in force for 30 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: May 20, 2015, 3:00 PM CDT (20:00 UTC)
Expired: May 20, 2015, 3:30 PM CDT
In force: 30 min
Issued by: NWS New Orleans, LA

County Pike County, MS

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 8.0 hours before the alert went out and 103 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: 1843 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 550 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: -17 m²/s²
0-3 km storm-relative helicity: 16 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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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 New Orleans, LA wrote its last area forecast discussion before this special weather statement went out at May 20, 12:37 PM CDT, 2 hours 23 minutes earlier.

Area forecast discussion, May 20, 12:37 PM CDT, 2 hours 23 minutes before

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Hazardous weather outlook, May 20, 11:49 AM CDT, 3 hours 11 minutes before

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In the hours before

Special weather statement, May 20, 1:20 PM CDT, 1 hour 40 minutes before

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Special weather statement, May 20, 1:59 PM CDT, 1 hour 1 minute before

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Special weather statement, May 20, 2:26 PM CDT, 34 minutes before

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Special weather statement, May 20, 3:00 PM CDT, 0 minutes before

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The office that day

Everything else NWS New Orleans, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 19, 7:31 PM CDT	Special Weather Statement	LIX	West Feliciana	14 min
May 20, 1:20 PM CDT	Special Weather Statement	LIX	East Baton Rouge, East Feliciana	40 min
May 20, 1:59 PM CDT	Special Weather Statement	LIX	Ascension	31 min
May 20, 2:26 PM CDT	Special Weather Statement	LIX	Harrison	34 min
May 20, 3:02 PM CDT	Special Weather Statement	LIX	Harrison	28 min

Nearby

Special Weather Statements in Mississippi, 2015 Every special weather statement 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.