Alert archive / Mississippi / Special Weather Statements in 2017

Special Weather Statement, NWS Jackson, MS

July 15, 2017Leflore County, Mississippi

NWS Jackson, MS issued this special weather statement at Jul 15, 2017, 3:05 PM CDT for Leflore County, Mississippi. It was in force for 25 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: Jul 15, 2017, 3:05 PM CDT (20:05 UTC)
Expired: Jul 15, 2017, 3:30 PM CDT
In force: 25 min
Issued by: NWS Jackson, MS

County Leflore County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 147 km from the middle of the area, began a volume at 20:05 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, 8.1 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: 626 J/kg
Mixed-layer CIN: -37 J/kg
Mixed-layer LCL: 840 m above ground
0-6 km bulk shear: 4 kt
0-1 km storm-relative helicity: -15 m²/s²
0-3 km storm-relative helicity: 7 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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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 Jackson, MS wrote its last area forecast discussion before this special weather statement went out at Jul 15, 1:02 PM CDT, 2 hours 3 minutes earlier.

Area forecast discussion, Jul 15, 1:02 PM CDT, 2 hours 3 minutes before

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Hazardous weather outlook, Jul 15, 10:16 AM CDT, 4 hours 49 minutes before

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In the hours before

Special weather statement, Jul 15, 1:07 PM CDT, 1 hour 58 minutes before

Special Weather Statement
National Weather Service Jackson MS
107 PM CDT SAT JUL 15 2017

MSZ018-151830-
Bolivar MS-
107 PM CDT SAT JUL 15 2017

...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN BOLIVAR COUNTY
UNTIL 130 PM CDT...

At 106 PM CDT, Meteorologists were tracking a strong thunderstorm 7
miles north of Benoit, or 7 miles southeast of Rosedale, moving south
at 15 mph.

Dime size hail and wind gusts up to 50 mph will be possible with this
storm.

This strong thunderstorm will be near...
  Benoit around 130 PM CDT.

Other locations impacted by this storm include Beulah and Pace.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

High winds can bring down trees and large limbs resulting in serious
injury or property damage. Exercise extreme caution when outdoors
during such strong winds...and be especially aware of older trees.

&&

LAT...LON 3379 9082 3353 9088 3361 9113 3365 9117
      3368 9114 3366 9109 3368 9103 3372 9106
      3370 9110 3371 9112 3378 9107 3378 9105
      3376 9103 3378 9099 3380 9100 3381 9105
      3385 9102
TIME...MOT...LOC 1806Z 021DEG 10KT 3376 9096

BYB

Special weather statement, Jul 15, 2:53 PM CDT, 12 minutes before

Special Weather Statement
National Weather Service Jackson MS
253 PM CDT SAT JUL 15 2017

MSZ025-152030-
Leflore MS-
253 PM CDT SAT JUL 15 2017

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN LEFLORE COUNTY
UNTIL 330 PM CDT...

At 253 PM CDT, Meteorologists were tracking a strong thunderstorm
over Sunnyside, or 11 miles north of Itta Bena, moving southwest at
15 mph.

Winds in excess of 40 mph will be possible with this storm.

This storm will remain over mainly rural areas of northwestern
Leflore County, including the following locations: Schlater.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

High winds can bring down trees and large limbs resulting in serious
injury or property damage. Exercise extreme caution when outdoors
during such strong winds...and be especially aware of older trees.

&&

LAT...LON 3376 9020 3376 9025 3375 9030 3373 9031
      3370 9030 3369 9029 3370 9026 3374 9024
      3372 9022 3372 9019 3371 9019 3354 9026
      3360 9045 3381 9036 3381 9031
TIME...MOT...LOC 1953Z 025DEG 14KT 3367 9032

TW

Special weather statement, Jul 15, 3:05 PM CDT, 0 minutes before

Special Weather Statement
National Weather Service Jackson MS
305 PM CDT SAT JUL 15 2017

MSZ025-152030-
Leflore MS-
305 PM CDT SAT JUL 15 2017

...A STRONG THUNDERSTORM WILL AFFECT WEST CENTRAL LEFLORE COUNTY
UNTIL 330 PM CDT...

At 305 PM CDT, Meteorologists were tracking a strong thunderstorm
near Itta Bena, moving south at 15 mph.

Dime size hail and wind gusts up to 50 mph will be possible with this
storm.

This strong thunderstorm will be near...
  Itta Bena around 325 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

High winds can bring down trees and large limbs resulting in serious
injury or property damage. Exercise extreme caution when outdoors
during such strong winds...and be especially aware of older trees.

&&

LAT...LON 3359 9024 3345 9029 3351 9045 3360 9045
      3365 9043
TIME...MOT...LOC 2005Z 022DEG 13KT 3358 9036

TW

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 14, 9:14 PM CDT	Special Weather Statement	JAN	Leake	31 min
Jul 15, 1:07 PM CDT	Special Weather Statement	JAN	Bolivar	23 min
Jul 15, 2:53 PM CDT	Special Weather Statement	JAN	Leflore	37 min
Jul 15, 3:23 PM CDT	Special Weather Statement	JAN	Leflore	37 min
Jul 15, 4:04 PM CDT	Special Weather Statement	JAN	Clarke	26 min
Jul 15, 4:13 PM CDT	Special Weather Statement	JAN	Leake	32 min
Jul 15, 4:42 PM CDT	Special Weather Statement	JAN	Madison	33 min
Jul 15, 5:25 PM CDT	Special Weather Statement	JAN	Franklin	35 min
Jul 15, 6:02 PM CDT	Flash Flood Warning	JAN	Franklin	3 hr
Jul 15, 6:17 PM CDT	Special Weather Statement	JAN	Warren	28 min
Jul 15, 6:18 PM CDT	Special Weather Statement	JAN	Rankin	27 min
Jul 15, 6:32 PM CDT	Special Weather Statement	JAN	Hinds	28 min

Nearby

Special Weather Statements in Mississippi, 2017 Every special weather statement in 2017

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.