Alert archive / Mississippi / Tornado Watches in 2013
Tornado Watch 59
The Storm Prediction Center issued this tornado watch at Mar 23, 2013, 5:21 PM CDT for 31 counties in Mississippi. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 23, 2013, 5:21 PM CDT (22:21 UTC)
- Expired
- Mar 23, 2013, 10:56 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 31 counties
Adams County, MS, Amite County, MS, Claiborne County, MS, Clarke County, MS, Copiah County, MS, Covington County, MS, Forrest County, MS, Franklin County, MS, Hinds County, MS, Jasper County, MS, Jefferson County, MS, Jefferson Davis County, MS, Jones County, MS, Kemper County, MS, Lamar County, MS, Lauderdale County, MS, Lawrence County, MS, Leake County, MS, Lincoln County, MS, Madison County, MS, Marion County, MS, Neshoba County, MS, Newton County, MS, Pike County, MS, Rankin County, MS, Scott County, MS, Simpson County, MS, Smith County, MS, Walthall County, MS, Warren County, MS, Wilkinson County, MS
The radar
The Jackson/Brandon,MS radar (KDGX), 21 km from the middle of the area, began a volume at 22:20 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 SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 30%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 40%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
9 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 23, 5:51 PM CDT | Severe Thunderstorm Warning | JAN | Lauderdale, Newton | 39 min |
| Mar 23, 6:04 PM CDT | Severe Thunderstorm Warning | JAN | Neshoba, Newton | 41 min |
| Mar 23, 6:27 PM CDT | Severe Thunderstorm Warning | JAN | Kemper, Lauderdale | 18 min |
| Mar 23, 6:32 PM CDT | Severe Thunderstorm Warning | JAN | Kemper | 58 min |
| Mar 23, 7:34 PM CDT | Severe Thunderstorm Warning | JAN | Attala, Holmes, Leake, Madison, Yazoo | 56 min |
| Mar 23, 8:32 PM CDT | Severe Thunderstorm Warning | JAN | Kemper, Neshoba, Noxubee, Winston | 43 min |
| Mar 23, 9:09 PM CDT | Severe Thunderstorm Warning | JAN | Copiah, Hinds, Rankin, Simpson | 66 min |
| Mar 23, 9:10 PM CDT | Severe Thunderstorm Warning | JAN | Kemper, Noxubee | 35 min |
| Mar 23, 9:41 PM CDT | Severe Thunderstorm Warning | JAN | Rankin, Scott | 64 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Jackson, MS (KJAN), launched 12:00Z, 10.4 hours before the alert went out and 26 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.
- Mixed-layer CAPE
- 18 J/kg
- Mixed-layer CIN
- -308 J/kg
- Mixed-layer LCL
- 445 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- 250 m²/s²
- 0-3 km storm-relative helicity
- 168 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
812
WWUS20 KWNS 232222
SEL9
SPC WW 232222
MSZ000-240600-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 59
NWS STORM PREDICTION CENTER NORMAN OK
520 PM CDT SAT MAR 23 2013
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
PARTS OF SOUTHERN AND CENTRAL MISSISSIPPI
EFFECTIVE THIS SATURDAY AFTERNOON AND SUNDAY MORNING FROM 520 PM
UNTIL 100 AM CDT.
TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 60 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 55 MILES NORTHWEST OF MC
COMB MISSISSIPPI TO 25 MILES EAST SOUTHEAST OF MERIDIAN
MISSISSIPPI. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU9).
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.
OTHER WATCH INFORMATION...CONTINUE...WW 58...
DISCUSSION...THE ENVIRONMENT IS BECOMING INCREASING CONDUCIVE TO
SUPERCELLS ACROSS THE WATCH AREA THIS EVENING. AS LOW-LEVEL WIND
FIELDS STRENGTHEN IN RESPONSE TO A DEVELOPING SURFACE LOW ACROSS THE
LOWER MISSISSIPPI VALLEY...STORMS MAY BECOME CAPABLE OF PRODUCING A
COUPLE OF TORNADOES...IN ADDITION TO LARGE HAIL AND LOCALLY DAMAGING
WIND GUSTS.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
450. MEAN STORM MOTION VECTOR 25040.
...KERRSPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 22, 8:16 PM CDT | Mesoscale Discussion | SPC | Attala, Bolivar, Carroll, Choctaw, Claiborne, Copiah and 18 more | 119 min |
| Mar 23, 3:41 AM CDT | Mesoscale Discussion | SPC | Alcorn, Benton, Calhoun, Carroll, Chickasaw, Choctaw and 24 more | 64 min |
| Mar 23, 12:35 PM CDT | Mesoscale Discussion | SPC | Forrest, George, Greene, Hancock, Harrison, Jackson and 6 more | 85 min |
| Mar 23, 12:56 PM CDT | Severe Thunderstorm Watch | SPC | Clarke, Covington, Forrest, George, Greene, Jones and 5 more | 9 hr |
| Mar 23, 2:52 PM CDT | Mesoscale Discussion | SPC | Clarke, George, Greene, Lauderdale, Perry, Wayne | 83 min |
| Mar 23, 5:01 PM CDT | Mesoscale Discussion | SPC | Adams, Attala, Carroll, Choctaw, Claiborne, Copiah and 28 more | 119 min |
| Mar 23, 5:22 PM CDT | Mesoscale Discussion | SPC | Clarke, George, Greene, Lauderdale, Perry, Wayne | 53 min |
| Mar 23, 5:45 PM CDT | Severe Thunderstorm Watch | SPC | Attala, Bolivar, Calhoun, Carroll, Chickasaw, Choctaw and 29 more | 5 hr |
| Mar 23, 6:49 PM CDT | Mesoscale Discussion | SPC | Attala, Carroll, Choctaw, Clay, Holmes, Humphreys and 15 more | 116 min |
Nearby
Tornado Watches in Mississippi, 2013Every tornado watch in 2013
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.