Alert archive / Arkansas / Tornado Watches in 2014

Tornado Watch 53

April 3, 201437 counties in Arkansas; Monroe County, Randolph County, Saint Clair County, Illinois; 36 counties in Missouri

The Storm Prediction Center issued this tornado watch at Apr 3, 2014, 4:58 PM CDT for 37 counties in Arkansas; Monroe County, Randolph County, Saint Clair County, Illinois; 36 counties in Missouri. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Apr 3, 2014, 4:58 PM CDT (21:58 UTC)
Expired
Apr 4, 2014, 12:00 AM CDT
In force
7 hr
Issued by
the Storm Prediction Center
Largest hail expected
2 in
Strongest gust expected
60 kt
All 76 counties

Baxter County, AR, Boone County, AR, Calhoun County, AR, Clark County, AR, Cleburne County, AR, Conway County, AR, Dallas County, AR, Faulkner County, AR, Fulton County, AR, Garland County, AR, Grant County, AR, Hot Spring County, AR, Independence County, AR, Izard County, AR, Jackson County, AR, Johnson County, AR, Logan County, AR, Lonoke County, AR, Marion County, AR, Montgomery County, AR, Newton County, AR, Ouachita County, AR, Perry County, AR, Pike County, AR, Polk County, AR, Pope County, AR, Prairie County, AR, Pulaski County, AR, Saline County, AR, Scott County, AR, Searcy County, AR, Sharp County, AR, Stone County, AR, Van Buren County, AR, White County, AR, Woodruff County, AR, Yell County, AR, Monroe County, IL, Randolph County, IL, Saint Clair County, IL, Bollinger County, MO, Boone County, MO, Butler County, MO, Callaway County, MO, Cape Girardeau County, MO, Carter County, MO, City of Saint Louis, MO, Cole County, MO, Crawford County, MO, Dent County, MO, Franklin County, MO, Gasconade County, MO, Howell County, MO, Iron County, MO, Jefferson County, MO, Madison County, MO, Mississippi County, MO, Moniteau County, MO, Montgomery County, MO, New Madrid County, MO, Oregon County, MO, Osage County, MO, Ozark County, MO, Perry County, MO, Reynolds County, MO, Ripley County, MO, Saint Charles County, MO, Saint Francois County, MO, Saint Louis County, MO, Sainte Genevieve County, MO, Scott County, MO, Shannon County, MO, Stoddard County, MO, Warren County, MO, Washington County, MO, Wayne County, MO

The radar

The Little Rock radar (KLZK), 128 km from the middle of the area, began a volume at 22:01 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
60%
One or more EF2 to EF5 tornadoes
30%
Ten or more severe wind reports
50%
One or more gusts of 65 knots or more
20%
Ten or more severe hail reports
50%
One or more hailstones of 2 inches or more
30%
Six or more combined severe hail and wind reports
90%

Warnings issued inside it

45 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Apr 3, 5:37 PM CDTSevere Thunderstorm WarningLSXCole, Osage38 min
Apr 3, 5:48 PM CDTTornado WarningLSXCole, Osage27 min
Apr 3, 6:06 PM CDTTornado WarningLSXFranklin, Gasconade, Osage24 min
Apr 3, 6:31 PM CDTSevere Thunderstorm WarningLSXFranklin, Gasconade, Saint Charles, Warren44 min
Apr 3, 7:00 PM CDTSevere Thunderstorm WarningLSXLincoln, Montgomery, Saint Charles, Warren45 min
Apr 3, 7:13 PM CDTTornado Warning Tornado observedLSXFranklin, Jefferson, Saint Charles, Saint Louis, Warren32 min
Apr 3, 7:22 PM CDTSevere Thunderstorm WarningLSXFranklin, Jefferson, Saint Charles, Saint Louis, Warren53 min
Apr 3, 7:26 PM CDTSevere Thunderstorm WarningPAHRipley34 min
Apr 3, 7:30 PM CDTSevere Thunderstorm WarningLZKBaxter, Marion, Newton, Searcy45 min
Apr 3, 7:33 PM CDTTornado WarningLZKBaxter, Marion, Newton, Searcy42 min
Apr 3, 7:46 PM CDTSevere Thunderstorm WarningPAHButler, Carter, Ripley29 min
Apr 3, 7:46 PM CDTSevere Thunderstorm WarningSGFDouglas, Ozark44 min
Apr 3, 7:55 PM CDTSevere Thunderstorm WarningPAHRipley35 min
Apr 3, 8:00 PM CDTSevere Thunderstorm WarningPAHBollinger, Cape Girardeau30 min
Apr 3, 8:01 PM CDTSevere Thunderstorm WarningPAHCape Girardeau, Perry29 min
Apr 3, 8:03 PM CDTSevere Thunderstorm WarningLZKBaxter, Fulton, Izard, Marion, Stone42 min
Apr 3, 8:03 PM CDTTornado WarningPAHCape Girardeau27 min
Apr 3, 8:04 PM CDTSevere Thunderstorm WarningLSXMadison, Monroe, Saint Clair41 min
Apr 3, 8:04 PM CDTTornado WarningPAHRipley26 min
Apr 3, 8:09 PM CDTSevere Thunderstorm WarningLSXCrawford, Franklin, Gasconade, Washington51 min
Apr 3, 8:11 PM CDTTornado WarningPAHButler, Stoddard, Wayne34 min
Apr 3, 8:16 PM CDTTornado WarningLZKBaxter, Izard, Stone44 min
Apr 3, 8:16 PM CDTTornado WarningPAHButler, Ripley14 min
Apr 3, 8:23 PM CDTTornado Warning Tornado observedLSXMadison, Saint Clair22 min
Apr 3, 8:24 PM CDTSevere Thunderstorm WarningPAHCape Girardeau51 min
Apr 3, 8:30 PM CDTTornado WarningPAHButler15 min
Apr 3, 8:32 PM CDTSevere Thunderstorm WarningPAHBollinger, Cape Girardeau, Stoddard, Wayne28 min
Apr 3, 8:43 PM CDTSevere Thunderstorm WarningLZKFulton, Izard, Sharp47 min
Apr 3, 8:44 PM CDTTornado WarningPAHBollinger, Butler, Stoddard, Wayne31 min
Apr 3, 8:46 PM CDTSevere Thunderstorm WarningLSXClinton, Madison, Saint Clair44 min
Apr 3, 8:54 PM CDTSevere Thunderstorm WarningSGFOregon51 min
Apr 3, 9:00 PM CDTSevere Thunderstorm WarningLSXMonroe45 min
Apr 3, 9:01 PM CDTTornado WarningSGFOregon44 min
Apr 3, 9:14 PM CDTSevere Thunderstorm WarningPAHCape Girardeau, Scott, Stoddard31 min
Apr 3, 9:17 PM CDTSevere Thunderstorm WarningPAHCarter, Ripley43 min
Apr 3, 9:25 PM CDTFlash Flood WarningLSXCrawford, Franklin, Jefferson, Washington9 hr
Apr 3, 9:33 PM CDTSevere Thunderstorm WarningPAHCape Girardeau, Scott27 min
Apr 3, 9:40 PM CDTSevere Thunderstorm WarningPAHButler, Wayne50 min
Apr 3, 9:44 PM CDTFlash Flood WarningLSXClinton, Marion, Monroe, Saint Clair, Washington9 hr
Apr 3, 9:59 PM CDTSevere Thunderstorm WarningPAHBollinger, Cape Girardeau, Perry46 min
Apr 3, 10:13 PM CDTSevere Thunderstorm WarningLSXRandolph47 min
Apr 3, 10:15 PM CDTSevere Thunderstorm WarningLZKCalhoun, Ouachita45 min
Apr 3, 10:22 PM CDTSevere Thunderstorm WarningPAHBollinger, Stoddard38 min
Apr 3, 10:42 PM CDTSevere Thunderstorm WarningPAHCape Girardeau, Scott33 min
Apr 3, 11:44 PM CDTSevere Thunderstorm WarningLZKCalhoun, Ouachita46 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

Springfield, MO (KSGF), launched 12:00Z, 10.0 hours before the alert went out and 153 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, Springfield, MO at 12:00Z on 2014-04-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1727 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 12:00Z on 2014-04-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 417 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
1727 J/kg
Mixed-layer CIN
-17 J/kg
Mixed-layer LCL
686 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
417 m²/s²
0-3 km storm-relative helicity
423 m²/s²
Significant tornado parameter
3.5
Supercell composite
15.3

Open this sounding in Storm Lab

The text

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

799 
WWUS20 KWNS 032158
SEL3  
SPC WW 032158
ARZ000-ILZ000-MOZ000-040500-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 53
NWS STORM PREDICTION CENTER NORMAN OK
500 PM CDT THU APR 3 2014

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* TORNADO WATCH FOR PORTIONS OF 
  CENTRAL ARKANSAS
  EXTREME SOUTHWEST ILLINOIS
  EAST CENTRAL AND SOUTHEAST MISSOURI

* EFFECTIVE THIS THURSDAY AFTERNOON FROM 500 PM UNTIL MIDNIGHT
  CDT.

* PRIMARY THREATS INCLUDE...
  SEVERAL TORNADOES LIKELY 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 60 STATUTE
MILES EAST AND WEST OF A LINE FROM 30 MILES SOUTH SOUTHWEST OF
HOT SPRINGS ARKANSAS TO 65 MILES NORTHEAST OF VICHY MISSOURI. 
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU3).

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...THIS TORNADO WATCH REPLACES TORNADO
WATCH NUMBER 49...TORNADO WATCH NUMBER 50. WATCH NUMBER 49 50
WILL NOT BE IN EFFECT AFTER 500 PM CDT. CONTINUE...WW 51...WW
52...

DISCUSSION...CONVECTION WILL CONTINUE ALONG THE WARM FRONT/OUTFLOW
BOUNDARY FROM CENTRAL INTO E CENTRAL MO...AND OTHER STORMS WILL
LIKELY SPREAD INTO THE WATCH AREA FROM THE W THIS EVENING AS THE LOW
LEVELS WARM AND MOISTEN IN THE WAKE OF EARLIER STORMS.  THE
COMBINATION OF VERTICAL SHEAR AND INSTABILITY WILL SUPPORT RISKS OF
TORNADOES...DAMAGING WINDS...AND LARGE HAIL THROUGH LATE EVENING.

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 24035.


...THOMPSON

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 3, 9:18 AM CDTMesoscale DiscussionSPCBaxter, Benton, Boone, Carroll, Cleburne, Conway and 28 more57 min
Apr 3, 9:33 AM CDTTornado WatchSPCBaxter, Benton, Boone, Calhoun, Carroll, Clark and 38 more7 hr
Apr 3, 12:05 PM CDTMesoscale DiscussionSPCBaxter, Benton, Boone, Carroll, Clark, Cleburne and 27 more55 min
Apr 3, 12:33 PM CDTMesoscale DiscussionSPCBenton, Carroll, Crawford, Franklin, Madison, Sebastian and 1 more87 min
Apr 3, 1:15 PM CDTTornado WatchSPCBenton, Carroll, Crawford, Franklin, Madison, Sebastian and 1 more8 hr
Apr 3, 1:46 PM CDTMesoscale DiscussionSPCHempstead, Howard, Little River, Miller, Montgomery, Pike and 4 more89 min
Apr 3, 1:50 PM CDTTornado WatchSPCHempstead, Howard, Lafayette, Little River, Miller, Nevada and 1 more7 hr
Apr 3, 3:48 PM CDTMesoscale DiscussionSPCBenton, Carroll, Crawford, Madison, Washington57 min
Apr 3, 4:34 PM CDTMesoscale DiscussionSPCBaxter, Boone, Calhoun, Clark, Cleburne, Conway and 35 more26 min
Apr 3, 1:05 AM CDTMesoscale DiscussionSPCAdams, Hancock, Henderson, McDonough, Mercer, Rock Island and 2 more55 min
Apr 3, 2:49 AM CDTMesoscale DiscussionSPCAdams, Bond, Brown, Bureau, Calhoun, Cass and 44 more116 min
Apr 3, 6:24 AM CDTMesoscale DiscussionSPCBond, Clay, Clinton, Effingham, Fayette, Franklin and 12 more96 min
Apr 3, 9:22 AM CDTMesoscale DiscussionSPCHardin, Massac, Pope83 min
Apr 3, 12:28 PM CDTMesoscale DiscussionSPCAlexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 10 more62 min
Apr 3, 12:46 PM CDTTornado WatchSPCAlexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 10 more4 hr
Apr 3, 3:17 PM CDTMesoscale DiscussionSPCAdams, Pike58 min
Apr 2, 9:36 PM CDTMesoscale DiscussionSPCBarton, Bates, Benton, Camden, Cass, Cedar and 18 more54 min
Apr 2, 9:59 PM CDTSevere Thunderstorm WatchSPCBarton, Bates, Benton, Camden, Carroll, Cass and 21 more7 hr
Apr 3, 12:00 AM CDTMesoscale DiscussionSPCBarton, Bates, Benton, Camden, Carroll, Cass and 22 more90 min

Nearby

Tornado Watches in Arkansas, 2014Tornado Watches in Missouri, 2014Tornado Watches in Illinois, 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.