Alert archive / Mississippi / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 247, NWS Jackson, MS

May 20, 2016Noxubee County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at May 20, 2016, 4:41 PM CDT for Noxubee County, Mississippi. It was in force for 19 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: May 20, 2016, 4:41 PM CDT (21:41 UTC)
Expired: May 20, 2016, 5:00 PM CDT
In force: 19 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Noxubee County, MS

The radar

The Columbus AFB radar (KGWX), 74 km from the middle of the area, began a volume at 21:42 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 9.7 hours before the alert went out and 145 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: 7 J/kg
Mixed-layer CIN: -181 J/kg
Mixed-layer LCL: 1126 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 67 m²/s²
0-3 km storm-relative helicity: 146 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

752 
WUUS54 KJAN 202141
SVRJAN
MSC103-202200-
/O.NEW.KJAN.SV.W.0247.160520T2141Z-160520T2200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
441 PM CDT FRI MAY 20 2016

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN NOXUBEE COUNTY IN EAST CENTRAL MISSISSIPPI...

* UNTIL 500 PM CDT

* AT 441 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER BIGBEE
  VALLEY...OR NEAR PICKENSVILLE...MOVING SOUTHEAST AT 15 MPH.

  HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE 
           TO ROOFS...SIDING...AND TREES. 

* THIS SEVERE THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF
  NORTHEASTERN NOXUBEE COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 3327 8831 3321 8832 3314 8832 3314 8833
      3322 8843 3329 8835 3328 8830
TIME...MOT...LOC 2141Z 306DEG 12KT 3323 8836 

HAIL...1.00IN
WIND...60MPH
 
$$

17

1 follow-up statement

464 
WWUS54 KJAN 202150
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
450 PM CDT FRI MAY 20 2016

MSC103-202200-
/O.EXP.KJAN.SV.W.0247.000000T0000Z-160520T2200Z/
NOXUBEE MS-
450 PM CDT FRI MAY 20 2016

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN NOXUBEE COUNTY
WILL EXPIRE AT 500 PM CDT...
        
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND HAVE EXITED THE WARNED AREA. THEREFORE THE WARNING WILL
BE ALLOWED TO EXPIRE.

LAT...LON 3327 8831 3321 8832 3314 8832 3314 8833
      3322 8843 3329 8835 3328 8830
TIME...MOT...LOC 2149Z 306DEG 12KT 3323 8836 

$$

17

What forecasters said that day

The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at May 20, 2:55 PM CDT, 1 hour 46 minutes earlier.

Area forecast discussion, May 20, 2:55 PM CDT, 1 hour 46 minutes before

Area Forecast Discussion
National Weather Service Jackson MS
255 PM CDT FRI MAY 20 2016

.DISCUSSION...WV imagery showing narrow stripe of ascent has about
cleared the forecast area as deep/strong subsidence has set up in its
wake over western sections. Although a few showers were allowed to
develop over the northeast this afternoon, for the most part
conditions have remained dry.

Storm system will continue pulling away tonight as mid level nw
flow/ridging builds in from the west, clearing remaining cloud cover
away.

While amplified flow will not look like a usual late May
pattern, the temperature regime will. Maximum temperatures in the
lower to middle 80s early in the period should have no trouble
warming into the upper 80s to near 90 by the end of the period as
ridging pattern keeps lower layers warm. This warmth with dewpoints
in the upper 60s/lower 70s will keep a chance of mainly afternoon
showers and thunderstorms in the west. Meanwhile over the east,
dewpoints in the lower 60s will mean a larger diurnal range each day
and a lesser probability of precipitation./26/

&&

.AVIATION...Sky conditions have become sct/few at nearly all
locations with a few shra/tsra up by GTR as of 20z. look for skies
to continue to be a mix of few/sct as we head into evening with some
clear skies at some areas. There remains some uncertainty, but later
tonight, there is potential for IFR ceilings/vis to develop across
the E/SE locations after 07-08z. This was added to MEI/HBG with
conditions improving by 15z to VFR. /CME/

&&

.PRELIMINARY POINT TEMPS/POPS...
Jackson       64  86  62  84 /   8   3   9   2
Meridian      62  85  58  84 /   6   3  12   2
Vicksburg     60  84  61  84 /   7   3   4   4
Hattiesburg   65  88  63  86 /  11   1   1   3
Natchez       63  85  63  84 /   4   1   2   3
Greenville    60  82  61  83 /   7   4   4   3
Greenwood     60  83  58  83 /   9   4   7   1

&&

.JAN Watches/Warnings/Advisories...
MS...None.
LA...None.
AR...None.
&&

Hazardous weather outlook, May 20, 2:07 PM CDT, 2 hours 34 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE JACKSON MS
207 PM CDT FRI MAY 20 2016

ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074-
211915-
ASHLEY-CHICOT-MOREHOUSE-WEST CARROLL-EAST CARROLL-RICHLAND-
MADISON LA-FRANKLIN LA-CATAHOULA-TENSAS-CONCORDIA-BOLIVAR-
SUNFLOWER-LEFLORE-GRENADA-CARROLL-MONTGOMERY-WEBSTER-CLAY-LOWNDES-
CHOCTAW-OKTIBBEHA-WASHINGTON-HUMPHREYS-HOLMES-ATTALA-WINSTON-
NOXUBEE-ISSAQUENA-SHARKEY-YAZOO-MADISON MS-LEAKE-NESHOBA-KEMPER-
WARREN-HINDS-RANKIN-SCOTT-NEWTON-LAUDERDALE-CLAIBORNE-COPIAH-
SIMPSON-SMITH-JASPER-CLARKE-JEFFERSON-ADAMS-FRANKLIN MS-LINCOLN-
LAWRENCE-JEFFERSON DAVIS-COVINGTON-JONES-MARION-LAMAR-FORREST-
207 PM CDT FRI MAY 20 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST
ARKANSAS...NORTHEAST LOUISIANA...CENTRAL MISSISSIPPI...EAST
CENTRAL MISSISSIPPI...NORTH CENTRAL MISSISSIPPI...NORTHEAST
MISSISSIPPI...NORTHWEST MISSISSIPPI...SOUTH CENTRAL MISSISSIPPI...
SOUTHEAST MISSISSIPPI...SOUTHWEST MISSISSIPPI...AND WEST CENTRAL
MISSISSIPPI.

.DAY ONE...TONIGHT AND SATURDAY

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.DAYS TWO THROUGH SEVEN...SATURDAY NIGHT THROUGH THURSDAY

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER CALL TO ACTION STATEMENT...
THE ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS...AND
EMERGENCY MANAGEMENT PERSONNEL IN SUPPORT OF SEVERE WEATHER
OPERATIONS IS NOT EXPECTED THROUGH NEXT THURSDAY.

CME

&&

...HAZARD LEGEND...

NO SHORT TERM HAZARDS EXPECTED.

...USEFUL WEATHER WEB PAGES (URLS)...

NWS JAN HOME PAGE...
   WWW.WEATHER.GOV/JAN
STAY AWARE, STAY SAFE NWS JAN BRIEFING PAGE...
   WWW.SRH.NOAA.GOV/JAN/?N=SAFE
FIND NWS JAN ON FACEBOOK...
   WWW.FACEBOOK.COM/NWSJACKSONMS
FOLLOW NWS JAN ON TWITTER...
   @NWSJACKSONMS

   PLEASE CONVERT ALL WEB ADDRESSES TO LOWER CASE BEFORE ENTERING!

In the hours before

Local storm report, May 20, 2:29 PM CDT, 2 hours 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
229 PM CDT FRI MAY 20 2016

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1248 AM     TSTM WND DMG     3 SSE SUNRISE           31.27N 89.20W
05/20/2016                   FORREST            MS   EMERGENCY MNGR

            TREE DOWN ON RUGER RD NEAR OLD RIFFLE RANGE RD.

&&

CME

Special weather statement, May 20, 3:36 PM CDT, 1 hour 5 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
336 PM CDT FRI MAY 20 2016

MSZ038-039-202100-
NOXUBEE MS-WINSTON MS-
336 PM CDT FRI MAY 20 2016

...A STRONG THUNDERSTORM WILL AFFECT WEST CENTRAL NOXUBEE AND EAST
CENTRAL WINSTON COUNTIES UNTIL 400 PM CDT...

AT 335 PM CDT...METEOROLOGISTS WERE TRACKING A STRONG THUNDERSTORM
NEAR MASHULAVILLE...OR 12 MILES EAST OF LOUISVILLE...MOVING EAST AT 10
MPH.

DIME SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THIS STORM.

THIS STORM WILL REMAIN OVER MAINLY RURAL AREAS OF WEST CENTRAL
NOXUBEE AND EAST CENTRAL WINSTON COUNTIES.

LAT...LON 3307 8889 3318 8890 3324 8877 3303 8875
TIME...MOT...LOC 2035Z 265DEG 10KT 3313 8884

17

Special weather statement, May 20, 4:18 PM CDT, 23 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
418 PM CDT FRI MAY 20 2016

MSZ031-039-202145-
NOXUBEE MS-LOWNDES MS-
418 PM CDT FRI MAY 20 2016

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN NOXUBEE AND
SOUTHEASTERN LOWNDES COUNTIES UNTIL 445 PM CDT...

AT 418 PM CDT...METEOROLOGISTS WERE TRACKING A STRONG THUNDERSTORM
NEAR BIGBEE VALLEY...OR 10 MILES NORTHWEST OF PICKENSVILLE...MOVING
EAST AT 15 MPH.

NICKEL SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THIS STORM.

THIS STRONG THUNDERSTORM WILL BE NEAR...
  BIGBEE VALLEY AROUND 435 PM CDT.

LAT...LON 3319 8832 3324 8853 3335 8849 3336 8830
TIME...MOT...LOC 2118Z 286DEG 14KT 3330 8842

17

The office that day

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

Issued	Product	Office	Counties	Lasted
May 20, 12:10 AM CDT	Severe Thunderstorm Warning	JAN	Forrest, Lamar	65 min
May 20, 12:59 AM CDT	Special Weather Statement	JAN	Jones	46 min
May 20, 3:36 PM CDT	Special Weather Statement	JAN	Winston	24 min
May 20, 4:02 PM CDT	Severe Thunderstorm Warning	JAN	Lowndes	13 min
May 20, 4:18 PM CDT	Special Weather Statement	JAN	Lowndes	27 min
May 20, 4:48 PM CDT	Special Weather Statement	JAN	Noxubee	27 min
May 20, 5:01 PM CDT	Severe Thunderstorm Warning	JAN	Noxubee	14 min
May 20, 5:16 PM CDT	Severe Thunderstorm Warning	JAN	Kemper, Noxubee	14 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2016 Every severe thunderstorm warning in 2016

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.