Alert archive / Mississippi / Heat Advisories in 2015

Heat Advisory 2, NWS Jackson, MS

June 23, 201522 counties in Mississippi

NWS Jackson, MS issued this heat advisory at Jun 23, 2015, 2:42 PM CDT for 22 counties in Mississippi. It took effect at Jun 24, 2015, 11:00 AM CDT. It was in force for 25 hr.

The area

The counties it named.

The facts

Issued: Jun 23, 2015, 2:42 PM CDT (19:42 UTC)
In effect from: Jun 24, 2015, 11:00 AM CDT
Expired: Jun 25, 2015, 11:31 AM CDT
In force: 25 hr
Issued by: NWS Jackson, MS

All 22 counties

Attala County, MS, Carroll County, MS, Choctaw County, MS, Clay County, MS, Grenada County, MS, Hinds County, MS, Holmes County, MS, Kemper County, MS, Lauderdale County, MS, Leake County, MS, Lowndes County, MS, Madison County, MS, Montgomery County, MS, Neshoba County, MS, Newton County, MS, Noxubee County, MS, Oktibbeha County, MS, Rankin County, MS, Scott County, MS, Webster County, MS, Winston County, MS, Yazoo County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 98 km from the middle of the area, began a volume at 19:44 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 12:00Z, 7.7 hours before the alert went out and 244 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: 1870 J/kg
Mixed-layer CIN: -55 J/kg
Mixed-layer LCL: 1088 m above ground
0-6 km bulk shear: 2 kt
0-1 km storm-relative helicity: -30 m²/s²
0-3 km storm-relative helicity: -53 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 heat advisory 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 heat advisory went out at Jun 23, 9:30 AM CDT, 5 hours 12 minutes earlier.

Area forecast discussion, Jun 23, 9:30 AM CDT, 5 hours 12 minutes before

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Hazardous weather outlook, Jun 23, 2:39 PM CDT, 3 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
Jun 22, 7:04 PM CDT	Special Weather Statement	JAN	Lamar	26 min

Nearby

Heat Advisories in Mississippi, 2015 Every heat advisory 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.