Alert archive / Mississippi / Tornado Watches in 2014
Tornado Watch 101
The Storm Prediction Center issued this tornado watch at Apr 27, 2014, 5:32 PM CDT for 17 counties in Mississippi. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 27, 2014, 5:32 PM CDT (22:32 UTC)
- Expired
- Apr 27, 2014, 8:06 PM CDT
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
Counties Calhoun County, MS, Chickasaw County, MS, Coahoma County, MS, DeSoto County, MS, Itawamba County, MS, Lafayette County, MS, Lee County, MS, Marshall County, MS, Monroe County, MS, Panola County, MS, Pontotoc County, MS, Quitman County, MS, Tallahatchie County, MS, Tate County, MS, Tunica County, MS, Union County, MS, Yalobusha County, MS
The radar
The Memphis radar (KNQA), 112 km from the middle of the area, began a volume at 22:33 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
- 40%
- One or more EF2 to EF5 tornadoes
- 30%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
5 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 27, 5:49 PM CDT | Severe Thunderstorm Warning | MEG | Coahoma, Quitman, Tunica | 41 min |
| Apr 27, 5:57 PM CDT | Tornado Warning | MEG | Panola | 48 min |
| Apr 27, 6:18 PM CDT | Tornado Warning | MEG | Panola, Quitman, Tate, Tunica | 42 min |
| Apr 27, 6:42 PM CDT | Tornado Warning | MEG | Lafayette, Marshall, Panola, Tate | 48 min |
| Apr 27, 6:52 PM CDT | Severe Thunderstorm Warning | MEG | DeSoto, Tate | 38 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
Little Rock, AR (KBYH), launched 12:00Z, 10.5 hours before the alert went out and 60 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
- 644 J/kg
- Mixed-layer CIN
- -205 J/kg
- Mixed-layer LCL
- 1166 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 46 m²/s²
- 0-3 km storm-relative helicity
- 134 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.3
The text
As transmitted, in the capitals the NWS used until 2016.
435 WWUS20 KWNS 272230 SEL1 SPC WW 272230 MSZ000-280400- URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 101 NWS STORM PREDICTION CENTER NORMAN OK 530 PM CDT SUN APR 27 2014 THE NWS STORM PREDICTION CENTER HAS ISSUED A * TORNADO WATCH FOR PORTIONS OF NORTHERN MISSISSIPPI * EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 530 PM UNTIL 1100 PM CDT. * PRIMARY THREATS INCLUDE... A COUPLE INTENSE TORNADOES POSSIBLE ISOLATED VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 35 STATUTE MILES NORTH AND SOUTH OF A LINE FROM 60 MILES WEST OF OXFORD MISSISSIPPI TO 35 MILES EAST SOUTHEAST OF TUPELO MISSISSIPPI. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1). PRECAUTIONARY/PREPAREDNESS ACTIONS... 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 95...WW 96...WW 97...WW 98...WW 99...WW 100... DISCUSSION...A LARGE SUPERCELL THUNDERSTORM HAS FORMED OVER NORTHWEST MS. THIS STORM MAY PERSIST FOR A FEW HOURS... TRACKING NORTHEASTWARD ALONG A WELL-DEFINED SURFACE BOUNDARY WHERE LOW LEVEL SHEAR IS MAXIMIZED. SEVERE WEATHER INCLUDING ISOLATED TORNADOES WILL BE POSSIBLE AS THIS ACTIVITY TRACKS ACROSS THE WATCH AREA. 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 500. MEAN STORM MOTION VECTOR 25030. ...HART
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 27, 6:05 AM CDT | Mesoscale Discussion | SPC | Attala, Bolivar, Calhoun, Carroll, Chickasaw, Choctaw and 36 more | 55 min |
| Apr 27, 4:01 PM CDT | Mesoscale Discussion | SPC | Carroll, Choctaw, Coahoma, Grenada, Leflore, Montgomery and 3 more | 89 min |
| Apr 27, 4:21 PM CDT | Mesoscale Discussion | SPC | Adams, Amite, Franklin, Jefferson, Lincoln, Pike and 1 more | 114 min |
Nearby
Tornado Watches in Mississippi, 2014Every tornado watch in 2014
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.