Alert archive / Mississippi / Tornado Warnings in 2010

Tornado Warning 19, NWS Mobile, AL

May 21, 2010Greene County, Wayne County, Mississippi

NWS Mobile, AL issued this tornado warning at May 21, 2010, 5:42 PM CDT for Greene County, Wayne County, Mississippi. It was in force for 31 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 21, 2010, 5:42 PM CDT (22:42 UTC)
Expired: May 21, 2010, 6:13 PM CDT
In force: 31 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon

Counties Greene County, MS, Wayne County, MS

The radar

The Mobile radar (KMOB), 93 km from the middle of the area, began a volume at 22:44 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

Jackson, MS (KJAN), launched 12:00Z, 10.7 hours before the alert went out and 171 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: 1818 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 498 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 121 m²/s²
0-3 km storm-relative helicity: 129 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 5.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

443 
WFUS54 KMOB 212242
TORMOB
MSC041-153-212330-
/O.NEW.KMOB.TO.W.0019.100521T2242Z-100521T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MOBILE AL
542 PM CDT FRI MAY 21 2010

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN GREENE COUNTY IN SOUTHEAST MISSISSIPPI...                 
  SOUTHEASTERN WAYNE COUNTY IN SOUTHEAST MISSISSIPPI...

* UNTIL 630 PM CDT

* AT 536 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 11 MILES WEST OF       
  BATTLES...MOVING SOUTHEAST AT 15 MPH.

* THE TORNADO WILL PASS NEAR...
  KITTRELL THROUGH 630 PM CDT

THE SAFEST PLACE TO BE DURING A TORNADO IS ON THE LOWEST FLOOR OF A
STURDY BUILDING...PREFERABLY IN AN INTERIOR HALLWAY OR A ROOM SUCH AS
A CLOSET OR BATHROOM. IF POSSIBLE...GET UNDER A WORKBENCH OR OTHER
PIECE OF STURDY FURNITURE. USE BLANKETS OR PILLOWS TO COVER YOUR BODY
AND ALWAYS STAY AWAY FROM WINDOWS.

TO REPORT ANY TORNADOES...FUNNEL CLOUDS...OR OTHER HAZARDOUS WEATHER
OBSERVATIONS TO YOUR NATIONAL WEATHER SERVICE...CALL TOLL FREE AT 1 8
7 7 6 3 3 6 7 7 2.

LAT...LON 3153 8846 3130 8853 3145 8873 3151 8870
TIME...MOT...LOC 2239Z 297DEG 11KT 3147 8868

$$

2 follow-up statements

035 
WWUS54 KMOB 212304
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
604 PM CDT FRI MAY 21 2010

MSC041-153-212330-
/O.CON.KMOB.TO.W.0019.000000T0000Z-100521T2330Z/
GREENE MS-WAYNE MS-
604 PM CDT FRI MAY 21 2010

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 630 PM CDT FOR 
SOUTHEASTERN WAYNE AND NORTHERN GREENE COUNTIES...

AT 558 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS 
TORNADO WAS OVER EXTREME NORTH CENTRAL GREENE COUNTY 3 MILES EAST OF 
SMITHTOWN...MOVING SOUTHEAST AT 10 MPH.

TO REPORT ANY TORNADOES...FUNNEL CLOUDS...OR OTHER HAZARDOUS WEATHER 
OBSERVATIONS TO YOUR NATIONAL WEATHER SERVICE...CALL TOLL FREE AT 1 8
7 7 6 3 3 6 7 7 2.

LAT...LON 3142 8869 3145 8867 3147 8848 3130 8853
TIME...MOT...LOC 2302Z 295DEG 9KT 3141 8865

$$

061 
WWUS54 KMOB 212313
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
613 PM CDT FRI MAY 21 2010

MSC041-153-212321-
/O.CAN.KMOB.TO.W.0019.000000T0000Z-100521T2330Z/
GREENE MS-WAYNE MS-
613 PM CDT FRI MAY 21 2010

...THE TORNADO WARNING FOR SOUTHEASTERN WAYNE AND NORTHERN GREENE 
COUNTIES IS CANCELLED...

...A SEVERE THUNDERSTORM WARNING CONTINUES FOR SOUTHEASTERN WAYNE 
AND NORTHERN GREENE COUNTIES...

AT 611 PM CDT...RADAR INDICATES THE CIRCULATION ASSOCIATED WITH THE 
SEVERE THUNDERSTORM MOVING SOUTHEAST THROUGH THE SMITHTOWN AREA HAS 
WEAKENED...BUT THE STORM IS STILL LIKELY PRODUCING LARGE HAIL TO THE 
SIZE OF QUARTERS AND POSSIBLY DAMAGING WINDS NEAR 60 MPH.  THE STORM 
CONTINUES MOVING SOUTHEAST AT 15 MPH.

LAT...LON 3142 8869 3145 8867 3147 8848 3130 8853
TIME...MOT...LOC 2311Z 295DEG 9KT 3140 8863

$$

The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 20, 10:12 PM CDT	Severe Thunderstorm Warning	MOB	Greene, Perry, Wayne	33 min
May 20, 10:48 PM CDT	Flash Flood Warning	MOB	Greene, Perry, Wayne	117 min
May 21, 5:30 PM CDT	Severe Thunderstorm Warning	MOB	Greene, Wayne	60 min
May 21, 6:31 PM CDT	Severe Thunderstorm Warning	MOB	Greene	59 min

Nearby

Tornado Warnings in Mississippi, 2010 Every tornado warning in 2010 Tornadoes in 2010

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.