Alert archive / Missouri / Tornado Watches in 2014
Tornado Watch 50
The Storm Prediction Center issued this tornado watch at Apr 3, 2014, 12:46 PM CDT for 16 counties in Illinois; 9 counties in Kentucky; 18 counties in Missouri. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 3, 2014, 12:46 PM CDT (17:46 UTC)
- Expired
- Apr 3, 2014, 5:03 PM CDT
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 43 counties
Alexander County, IL, Franklin County, IL, Gallatin County, IL, Hamilton County, IL, Hardin County, IL, Jackson County, IL, Jefferson County, IL, Johnson County, IL, Massac County, IL, Perry County, IL, Pope County, IL, Pulaski County, IL, Randolph County, IL, Saline County, IL, Union County, IL, Williamson County, IL, Ballard County, KY, Calloway County, KY, Carlisle County, KY, Fulton County, KY, Graves County, KY, Hickman County, KY, Livingston County, KY, Marshall County, KY, McCracken County, KY, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Carter County, MO, Crawford County, MO, Iron County, MO, Madison County, MO, Mississippi County, MO, New Madrid County, MO, Perry County, MO, Reynolds County, MO, Ripley County, MO, Saint Francois County, MO, Sainte Genevieve County, MO, Scott County, MO, Stoddard County, MO, Washington County, MO, Wayne County, MO
The radar
The Paducah radar (KPAH), 133 km from the middle of the area, began a volume at 17:46 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
- 50%
- One or more EF2 to EF5 tornadoes
- 30%
- Ten or more severe wind reports
- 40%
- One or more gusts of 65 knots or more
- 10%
- 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
2 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 3, 1:43 PM CDT | Flash Flood Warning | LSX | Crawford, Franklin, Gasconade, Jefferson, Washington | 8 hr |
| Apr 3, 3:19 PM CDT | Flash Flood Warning | PAH | Franklin, Hamilton, Jefferson, Wayne | 3 hr |
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, 5.8 hours before the alert went out and 300 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
- 1351 J/kg
- Mixed-layer CIN
- -11 J/kg
- Mixed-layer LCL
- 604 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 248 m²/s²
- 0-3 km storm-relative helicity
- 318 m²/s²
- Significant tornado parameter
- 1.4
- Supercell composite
- 9.1
The text
As transmitted, in the capitals the NWS used until 2016.
147
WWUS20 KWNS 031742
SEL0
SPC WW 031742
ILZ000-KYZ000-MOZ000-040000-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 50
NWS STORM PREDICTION CENTER NORMAN OK
1245 PM CDT THU APR 3 2014
THE NWS STORM PREDICTION CENTER HAS ISSUED A
* TORNADO WATCH FOR PORTIONS OF
SOUTHERN ILLINOIS
WESTERN KENTUCKY
SOUTHEAST MISSOURI
* EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 1245 PM
UNTIL 700 PM CDT.
* PRIMARY THREATS INCLUDE...
SEVERAL TORNADOES WITH A FEW INTENSE TORNADOES POSSIBLE
SEVERAL LARGE HAIL EVENTS WITH A FEW VERY LARGE HAIL EVENTS TO 2
INCHES IN DIAMETER POSSIBLE
SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 55 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 65 MILES WEST SOUTHWEST OF
FARMINGTON MISSOURI TO 40 MILES EAST NORTHEAST OF PADUCAH
KENTUCKY. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0).
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 49...
DISCUSSION...A CLUSTER OF THUNDERSTORMS OVER SOUTHERN MO WILL TRACK
EASTWARD ACROSS THE WATCH AREA THIS AFTERNOON. INCREASING
INSTABILITY IN THIS REGION...COUPLED WITH FAVORABLE LOW LEVEL
VERTICAL SHEAR WILL PROMOTE A RISK OF SEVERE STORMS...INCLUDING
SUPERCELLS. A RESIDUAL OUTFLOW BOUNDARY WILL FURTHER ENHANCE THE
LOW LEVEL SHEAR AND POSE A RISK OF A FEW TORNADOES.
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 25035.
...HARTSPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 3, 1:05 AM CDT | Mesoscale Discussion | SPC | Adams, Hancock, Henderson, McDonough, Mercer, Rock Island and 2 more | 55 min |
| Apr 3, 2:49 AM CDT | Mesoscale Discussion | SPC | Adams, Bond, Brown, Bureau, Calhoun, Cass and 44 more | 116 min |
| Apr 3, 6:24 AM CDT | Mesoscale Discussion | SPC | Bond, Clay, Clinton, Effingham, Fayette, Franklin and 12 more | 96 min |
| Apr 3, 9:22 AM CDT | Mesoscale Discussion | SPC | Hardin, Massac, Pope | 83 min |
| Apr 3, 12:28 PM CDT | Mesoscale Discussion | SPC | Alexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 10 more | 62 min |
| Apr 3, 3:17 PM CDT | Mesoscale Discussion | SPC | Adams, Pike | 58 min |
| Apr 3, 4:58 PM CDT | Tornado Watch | SPC | Monroe, Randolph, Saint Clair | 7 hr |
| Apr 3, 5:16 PM CDT | Mesoscale Discussion | SPC | Clay, Harlan, Knott, Knox, Laurel, Leslie and 6 more | 89 min |
| Apr 2, 9:36 PM CDT | Mesoscale Discussion | SPC | Barton, Bates, Benton, Camden, Cass, Cedar and 18 more | 54 min |
| Apr 2, 9:59 PM CDT | Severe Thunderstorm Watch | SPC | Barton, Bates, Benton, Camden, Carroll, Cass and 21 more | 7 hr |
| Apr 3, 12:00 AM CDT | Mesoscale Discussion | SPC | Barton, Bates, Benton, Camden, Carroll, Cass and 22 more | 90 min |
| Apr 3, 9:18 AM CDT | Mesoscale Discussion | SPC | Barry, Camden, Cedar, Christian, Dade, Dallas and 18 more | 57 min |
| Apr 3, 9:33 AM CDT | Tornado Watch | SPC | Barry, Camden, Christian, Dallas, Dent, Douglas and 19 more | 7 hr |
| Apr 3, 12:05 PM CDT | Mesoscale Discussion | SPC | Barry, Camden, Cedar, Christian, Dade, Dallas and 19 more | 55 min |
| Apr 3, 12:33 PM CDT | Mesoscale Discussion | SPC | Barry, Barton, Bates, Benton, Cedar, Christian and 15 more | 87 min |
| Apr 3, 1:15 PM CDT | Tornado Watch | SPC | Barry, Barton, Bates, Benton, Camden, Cass and 29 more | 8 hr |
| Apr 3, 3:48 PM CDT | Mesoscale Discussion | SPC | Barry, Barton, Benton, Camden, Cedar, Christian and 18 more | 57 min |
| Apr 3, 4:34 PM CDT | Mesoscale Discussion | SPC | Dent, Howell, Oregon, Ozark, Shannon | 26 min |
Nearby
Tornado Watches in Missouri, 2014Tornado Watches in Illinois, 2014Tornado Watches in Kentucky, 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.