Alert archive / Mississippi / Tornado Warnings in 2010

Tornado Warning 22, NWS Mobile, AL

May 21, 2010Greene County, Mississippi

NWS Mobile, AL issued this tornado warning at May 21, 2010, 7:22 PM CDT for Greene County, Mississippi. It was in force for 23 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, 7:22 PM CDT (00:22 UTC)
Expired
May 21, 2010, 7:45 PM CDT
In force
23 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon

County Greene County, MS

The radar

The Mobile radar (KMOB), 53 km from the middle of the area, began a volume at 00:25 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

Slidell Radar S, LA (KSIL), launched 00:00Z, 0.4 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-pSkew-T log-p diagram, Slidell Radar S, LA at 00:00Z on 2010-05-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2976 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 00:00Z on 2010-05-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 29 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
2976 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
891 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
29 m²/s²
0-3 km storm-relative helicity
95 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

431 
WFUS54 KMOB 220022
TORMOB
MSC041-220100-
/O.NEW.KMOB.TO.W.0022.100522T0022Z-100522T0100Z/

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

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

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

* UNTIL 800 PM CDT

* AT 716 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 5 MILES NORTH OF
  VERNAL...OR ABOUT 4 MILES SOUTHWEST OF LEAKESVILLE...MOVING
  SOUTHEAST AT 15 MPH.

* THE TORNADO WILL BE MOVE JUST WEST OF A LEAKESVILLE TO PISGAH LINE 
IN THE SOUTHEAST PORTION OF THE COUNTY.


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 3117 8860 3107 8844 3104 8843 3100 8843
      3100 8859 3112 8867
TIME...MOT...LOC 0021Z 322DEG 12KT 3111 8860

$$
1 follow-up statement
041 
WWUS54 KMOB 220045
SVSMOB

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

MSC041-220055-
/O.CAN.KMOB.TO.W.0022.000000T0000Z-100522T0100Z/
GREENE MS-
745 PM CDT FRI MAY 21 2010

...THE TORNADO WARNING FOR SOUTHEASTERN GREENE COUNTY IS CANCELLED...

LAT...LON 3117 8860 3107 8844 3104 8843 3100 8843
      3100 8859 3112 8867
TIME...MOT...LOC 0045Z 322DEG 12KT 3105 8854

$$

The office that day

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

IssuedProductOfficeCountiesLasted
May 21, 7:08 PM CDTSevere Thunderstorm WarningMOBGreene52 min
May 21, 8:00 PM CDTSevere Thunderstorm WarningMOBGeorge, Greene, Perry45 min

Nearby

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