Alert archive / Mississippi / Winter Storm Watches in 2015

Winter Storm Watch 2, NWS Jackson, MS

February 23, 201523 counties in Mississippi; East Carroll Parish, Morehouse Parish, West Carroll Parish, Louisiana; Ashley County, Chicot County, Arkansas

NWS Jackson, MS issued this winter storm watch at Feb 23, 2015, 3:16 PM CST for 23 counties in Mississippi; East Carroll Parish, Morehouse Parish, West Carroll Parish, Louisiana; Ashley County, Chicot County, Arkansas. It took effect at Feb 25, 2015, 6:00 AM CST. It was in force for .

The area

The counties it named.

The facts

Issued: Feb 23, 2015, 3:16 PM CST (21:16 UTC)
In effect from: Feb 25, 2015, 6:00 AM CST
Expired: Feb 24, 2015, 3:06 PM CST
In force
Issued by: NWS Jackson, MS

All 28 counties

Ashley County, AR, Chicot County, AR, East Carroll Parish, LA, Morehouse Parish, LA, West Carroll Parish, LA, Attala County, MS, Bolivar County, MS, Carroll County, MS, Choctaw County, MS, Clay County, MS, Grenada County, MS, Holmes County, MS, Humphreys County, MS, Issaquena County, MS, Leake County, MS, Leflore County, MS, Lowndes County, MS, Madison County, MS, Montgomery County, MS, Neshoba County, MS, Noxubee County, MS, Oktibbeha County, MS, Sharkey County, MS, Sunflower County, MS, Washington County, MS, Webster County, MS, Winston County, MS, Yazoo County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 102 km from the middle of the area, began a volume at 21:18 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

Jackson, MS (KJAN), launched 12:00Z, 9.3 hours before the alert went out and 97 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: 3 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 456 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 70 m²/s²
0-3 km storm-relative helicity: 239 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 winter storm watch 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 winter storm watch went out at Feb 23, 11:30 AM CST, 3 hours 46 minutes earlier.

Area forecast discussion, Feb 23, 11:30 AM CST, 3 hours 46 minutes before

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Hazardous weather outlook, Feb 23, 2:17 PM CST, 59 minutes before

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In the hours before

Local storm report, Feb 23, 12:57 PM CST, 2 hours 19 minutes before

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Local storm report, Feb 23, 1:04 PM CST, 2 hours 12 minutes before

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Local storm report, Feb 23, 1:46 PM CST, 1 hour 30 minutes before

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Local storm report, Feb 23, 2:12 PM CST, 1 hour 4 minutes before

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Local storm report, Feb 23, 2:15 PM CST, 1 hour 1 minute before

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Local storm report, Feb 23, 2:43 PM CST, 33 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
Feb 23, 9:42 AM CST	River Flood Warning	JAN	Attala, Holmes	24 days
Feb 23, 9:42 AM CST	River Flood Warning	JAN	Madison, Yazoo	33 days
Feb 23, 9:42 AM CST	River Flood Warning	JAN	Hinds, Warren	33 days
Feb 23, 9:43 AM CST	River Flood Warning	JAN	Neshoba	6 days
Feb 23, 10:07 AM CST	Freezing Rain Advisory	JAN	Copiah, Franklin, Lincoln, Rankin, Scott	23 hr

Nearby

Winter Storm Watches in Mississippi, 2015 Winter Storm Watches in Louisiana, 2015 Winter Storm Watches in Arkansas, 2015 Every winter storm watch 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.