Alert archive / Mississippi / Tornado Warnings in 2017

Tornado Warning 59, NWS Jackson, MS

April 30, 2017Holmes County, Humphreys County, Yazoo County, Mississippi

NWS Jackson, MS issued this tornado warning at Apr 30, 2017, 8:20 AM CDT for Holmes County, Humphreys County, Yazoo County, Mississippi. It was in force for 55 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Apr 30, 2017, 8:20 AM CDT (13:20 UTC)
Expired: Apr 30, 2017, 9:15 AM CDT
In force: 55 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

Counties Holmes County, MS, Humphreys County, MS, Yazoo County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 91 km from the middle of the area, began a volume at 13:22 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.

What was reported inside it

Time	Report	Where	Remark
Apr 30, 8:27 AM CDT	TSTM WND DMG	6 Wnw Yazoo City, MS	NUMEROUS TREES DOWN ACROSS THE COUNTY.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 30, 7:32 AM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 1.3 hours before the alert went out and 83 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: 647 J/kg
Mixed-layer CIN: -84 J/kg
Mixed-layer LCL: 920 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 221 m²/s²
0-3 km storm-relative helicity: 398 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 3.0

Open this sounding in Storm Lab

The text

As transmitted.

744 
WFUS54 KJAN 301320
TORJAN
MSC051-053-163-301415-
/O.NEW.KJAN.TO.W.0059.170430T1320Z-170430T1415Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Jackson MS
820 AM CDT SUN APR 30 2017

The National Weather Service in Jackson has issued a

* Tornado Warning for...
  Southwestern Holmes County in central Mississippi...
  Northwestern Yazoo County in central Mississippi...
  Southeastern Humphreys County in central Mississippi...

* Until 915 AM CDT
    
* At 820 AM CDT, a severe thunderstorm capable of producing a tornado
  was located 7 miles east of Holly Bluff, or 10 miles west of Yazoo
  City, moving northeast at 40 mph.

  HAZARD...Tornado. 

  SOURCE...Radar indicated rotation. 

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely. 

* This dangerous storm will be near...
  Yazoo City around 835 AM CDT. 
  Thornton and Tolarville around 855 AM CDT. 
  Tchula and Howard around 905 AM CDT. 

Other locations impacted by this tornadic thunderstorm include Eden,
Silver City and Louise.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3322 8995 3278 9041 3283 9072 3292 9066
      3293 9066 3323 9047
TIME...MOT...LOC 1320Z 217DEG 35KT 3285 9058 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

CME

2 follow-up statements

139 
WWUS54 KJAN 301338
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
838 AM CDT SUN APR 30 2017

MSC051-053-163-301415-
/O.CON.KJAN.TO.W.0059.000000T0000Z-170430T1415Z/
Holmes MS-Yazoo MS-Humphreys MS-
838 AM CDT SUN APR 30 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 915 AM CDT FOR
SOUTHWESTERN HOLMES...NORTHWESTERN YAZOO AND SOUTHEASTERN HUMPHREYS
COUNTIES...
    
At 837 AM CDT, a severe thunderstorm capable of producing a tornado
was located 7 miles southeast of Midnight, or 8 miles northwest of
Yazoo City, moving northeast at 35 mph.

HAZARD...Tornado. 

SOURCE...Radar indicated rotation. 

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely. 

This dangerous storm will be near...
  Thornton around 900 AM CDT. 
  Howard around 910 AM CDT. 
  Tchula around 915 AM CDT. 

Other locations impacted by this tornadic thunderstorm include Eden,
Silver City and Louise.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3322 8995 3278 9041 3281 9061 3300 9061
      3323 9047
TIME...MOT...LOC 1337Z 215DEG 31KT 3296 9049 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

CME

675 
WWUS54 KJAN 301351
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
851 AM CDT SUN APR 30 2017

MSC051-053-163-301415-
/O.CON.KJAN.TO.W.0059.000000T0000Z-170430T1415Z/
Holmes MS-Yazoo MS-Humphreys MS-
851 AM CDT SUN APR 30 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 915 AM CDT FOR
SOUTHWESTERN HOLMES...NORTH CENTRAL YAZOO AND SOUTHEASTERN HUMPHREYS
COUNTIES...
    
At 851 AM CDT, a severe thunderstorm capable of producing a tornado
was located near Thornton, moving northeast at 40 mph.

HAZARD...Tornado. 

SOURCE...Radar indicated rotation. 

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely. 

This dangerous storm will be near...
  Thornton around 855 AM CDT. 
  Howard around 905 AM CDT. 
  Tchula around 910 AM CDT. 

Other locations impacted by this tornadic thunderstorm include Eden
and Silver City.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3322 8995 3278 9041 3292 9047 3310 9055
      3323 9047
TIME...MOT...LOC 1351Z 217DEG 35KT 3307 9039 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

CME

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 30, 5:29 AM CDT	Severe Thunderstorm Warning	JAN	Adams	61 min
Apr 30, 6:10 AM CDT	Flash Flood Warning	JAN	Adams	4 hr
Apr 30, 6:14 AM CDT	Tornado Warning	JAN	Adams	34 min
Apr 30, 6:34 AM CDT	Severe Thunderstorm Warning	JAN	Claiborne, Warren	56 min
Apr 30, 6:41 AM CDT	Severe Thunderstorm Warning	JAN	Claiborne, Jefferson	49 min
Apr 30, 6:43 AM CDT	Tornado Warning	JAN	Warren	62 min
Apr 30, 6:50 AM CDT	Severe Thunderstorm Warning	JAN	Adams, Franklin, Jefferson	55 min
Apr 30, 7:20 AM CDT	Tornado Warning Tornado observed	JAN	Issaquena, Sharkey, Warren, Yazoo	55 min
Apr 30, 7:21 AM CDT	Tornado Warning	JAN	Claiborne, Copiah, Jefferson	39 min
Apr 30, 7:28 AM CDT	Tornado Warning	JAN	Claiborne, Hinds, Warren	62 min
Apr 30, 7:35 AM CDT	Severe Thunderstorm Warning	JAN	Copiah, Franklin, Lincoln	40 min
Apr 30, 7:56 AM CDT	Severe Thunderstorm Warning	JAN	Copiah, Hinds, Madison, Rankin, Simpson	64 min
Apr 30, 7:57 AM CDT	Tornado Warning	JAN	Hinds	48 min
Apr 30, 8:01 AM CDT	Tornado Warning	JAN	Copiah, Hinds, Rankin	44 min
Apr 30, 8:06 AM CDT	Severe Thunderstorm Warning	JAN	Humphreys, Yazoo	54 min
Apr 30, 8:12 AM CDT	Flash Flood Warning	JAN	Franklin, Lincoln	3 hr
Apr 30, 8:13 AM CDT	Tornado Warning	JAN	Hinds, Madison, Warren, Yazoo	62 min
Apr 30, 8:31 AM CDT	Tornado Warning	JAN	Hinds, Madison	59 min
Apr 30, 8:59 AM CDT	Severe Thunderstorm Warning	JAN	Rankin, Scott, Simpson, Smith	61 min
Apr 30, 9:00 AM CDT	Flash Flood Warning	JAN	Humphreys, Issaquena, Sharkey, Warren, Yazoo	3 hr
Apr 30, 9:05 AM CDT	Tornado Warning Tornado observed	JAN	Attala, Holmes, Madison, Yazoo	55 min
Apr 30, 9:09 AM CDT	Severe Thunderstorm Warning	JAN	Carroll, Holmes, Humphreys, Leflore	66 min
Apr 30, 9:18 AM CDT	Tornado Warning	JAN	Scott	42 min
Apr 30, 9:30 AM CDT	Flash Flood Warning	JAN	Attala, Holmes, Humphreys, Madison	3 hr
Apr 30, 9:37 AM CDT	Tornado Warning	JAN	Carroll, Holmes, Montgomery	53 min
Apr 30, 9:48 AM CDT	Tornado Warning Tornado observed	JAN	Leake, Neshoba, Newton, Scott	57 min
Apr 30, 9:50 AM CDT	Severe Thunderstorm Warning	JAN	Grenada, Leflore	40 min
Apr 30, 9:50 AM CDT	Severe Thunderstorm Warning	JAN	Covington, Jefferson Davis, Lamar, Marion	55 min
Apr 30, 9:53 AM CDT	Severe Thunderstorm Warning	JAN	Attala, Montgomery, Webster	52 min
Apr 30, 9:54 AM CDT	Flash Flood Warning	JAN	Copiah, Covington, Jefferson Davis, Lawrence, Simpson, Smith	3 hr
Apr 30, 10:05 AM CDT	Tornado Warning	JAN	Montgomery, Webster	27 min
Apr 30, 10:07 AM CDT	Severe Thunderstorm Warning	JAN	Kemper, Lauderdale, Neshoba, Newton	38 min
Apr 30, 10:16 AM CDT	Severe Thunderstorm Warning	JAN	Grenada, Montgomery	22 min
Apr 30, 10:22 AM CDT	Tornado Warning	JAN	Grenada	23 min
Apr 30, 10:33 AM CDT	Severe Thunderstorm Warning	JAN	Noxubee, Winston	57 min
Apr 30, 10:43 AM CDT	Severe Thunderstorm Warning	JAN	Covington, Forrest, Jones, Lamar	62 min
Apr 30, 10:45 AM CDT	Severe Thunderstorm Warning	JAN	Kemper, Lauderdale, Noxubee	60 min
Apr 30, 10:59 AM CDT	Tornado Warning	JAN	Kemper, Noxubee	43 min
Apr 30, 11:12 AM CDT	Flash Flood Warning	JAN	Covington, Forrest, Jones, Lamar, Marion	3 hr
Apr 30, 11:24 AM CDT	Severe Thunderstorm Warning	JAN	Lowndes	36 min
Apr 30, 11:33 AM CDT	Flash Flood Warning	JAN	Covington, Forrest, Jones	3 hr
Apr 30, 11:42 AM CDT	Tornado Warning	JAN	Lowndes	8 min
Apr 30, 12:31 PM CDT	Severe Thunderstorm Warning	JAN	Forrest, Jones	34 min

Nearby

Tornado Warnings in Mississippi, 2017 Every tornado warning in 2017 Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.