Alert archive / Mississippi / Freeze Warnings in 2018

Freeze Warning 6, NWS Jackson, MS

November 9, 201816 counties in Mississippi; Ashley County, Chicot County, Arkansas

NWS Jackson, MS issued this freeze warning at Nov 9, 2018, 3:22 AM CST for 16 counties in Mississippi; Ashley County, Chicot County, Arkansas. It took effect at Nov 10, 2018, 12:00 AM CST. It was in force for 9 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Nov 9, 2018, 3:22 AM CST (09:22 UTC)
In effect from: Nov 10, 2018, 12:00 AM CST
Expired: Nov 10, 2018, 9:00 AM CST
In force: 9 hr
Issued by: NWS Jackson, MS

Counties Ashley County, AR, Chicot County, AR, Attala County, MS, Bolivar County, MS, Carroll County, MS, Choctaw County, MS, Clay County, MS, Grenada County, MS, Holmes County, MS, Humphreys County, MS, Leflore County, MS, Lowndes County, MS, Montgomery County, MS, Oktibbeha County, MS, Sunflower County, MS, Washington County, MS, Webster County, MS, Winston County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 125 km from the middle of the area, began a volume at 09:21 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

Birmingham, AL (KBMX), launched 00:00Z, 9.4 hours before the alert went out and 295 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 496 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 88 m²/s²
0-3 km storm-relative helicity: 200 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 freeze 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 freeze warning went out at Nov 9, 12:25 AM CST, 2 hours 57 minutes earlier.

Area forecast discussion, Nov 9, 12:25 AM CST, 2 hours 57 minutes before

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Nearby

Freeze Warnings in Mississippi, 2018 Freeze Warnings in Arkansas, 2018 Every freeze warning in 2018

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.