Active spring pattern across the center of our nation with several episodes of severe weather and heavy rainfall expected into next week. The potential for very large hail, long track tornadoes, severe wind gusts, frequent cloud to ground lightning strikes and flash flooding are in the outlook. Furthermore, dangerous early season heat wave continues for the Gulf Coast states into early next week. Read More >
SVR/TOR Warnings | Flash Flood | Tornadoes | Winter Storms | High Wind |
SVR (severe thunderstorm warnings): The number of severe thunderstorm warnings issued.
TOR (tornado warnings): The number of tornado warnings issued.
TOTAL (total of severe and tornado warnings): The total number of severe thunderstorm and tornado warnings combined.
FFW (flash flood warnings): The number of flash flood warnings.
WARN (warnings): The number of warnings issued.
VERIF (verification): The number of warnings that verified.
EVENTS (events): Total number of actual severe weather events.
UNWARN (unwarned): The number of unwarned events.
WATCH (watches): The number of watches that were in effect before warnings were issued.
FAR (false alarm ratio): The percentage of warnings where the particular weather event did not occur.
POD (probability of detection): The percentage of events that were warned for and the conditions occured.
CSI (critical success index): The number of warned events divided by the sum of the total number of events and the number of the unverified counties.
LT (lead time): The average lead time before the first reported instance of the particular event.
SVR/TOR Warnings
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1994 | 133 | 36 | 169 | 166 | .503 | .620 | .381 | 12.1 |
1995 | 125 | 9 | 134 | 104 | .590 | .606 | .324 | 13.2 |
1996 | 89 | 5 | 94 | 76 | .436 | .868 | .519 | 18.2 |
1997 | 224 | 36 | 260 | 204 | .388 | .882 | .565 | 21.9 |
1998 | 330 | 52 | 382 | 386 | .343 | .904 | .614 | 27.1 |
1999 | 125 | 16 | 141 | 131 | .362 | .924 | .606 | 23.6 |
2000 | 240 | 14 | 254 | 260 | .276 | .919 | .681 | 22.4 |
2001 | 184 | 14 | 198 | 216 | .228 | .931 | .730 | 19.1 |
2002 | 170 | 28 | 198 | 214 | .192 | .879 | .727 | 17.4 |
2003 | 118 | 8 | 126 | 135 | .254 | .859 | .665 | 15.4 |
2004 | 165 | 27 | 192 | 191 | .375 | .848 | .562 | 19.9 |
2005 | 132 | 22 | 154 | 172 | .305 | .779 | .580 | 14.9 |
2006 | 211 | 6 | 217 | 243 | .226 | .901 | .714 | 18.8 |
2007** | 226 | 17 | 243 | 261 | .347 | .808 | .565 | 16.3 |
2008 | 168 | 26 | 194 | 318 | .428 | .792 | .497 | 18.7 |
2009 | 78 | 24 | 102 | 158 | .363 | .876 | .585 | 21.7 |
2010 | 114 | 11 | 125 | 213 | .312 | .749 | .559 | 17.2 |
2011 | 104 | 23 | 127 | 246 | .252 | .845 | .658 | 17.2 |
2012 | 124 | 3 | 127 | 226 | .220 | .780 | .639 | 14.4 |
2013 | 123 | 21 | 144 | 164 | .451 | .767 | .470 | 15.7 |
2014 | 136 | 5 | 141 | 203 | .369 | .837 | .562 | 18.9 |
** Storm Based Warnings began 10/1/2007
Flash Flood
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1997 | 14 | 8 | .357 | 1.000 | .643 | 18.8 |
1998 | 48 | 32 | 0 | 1.000 | 1.000 | 31.3 |
1999 | 38 | 18 | .447 | .778 | .477 | 54.0 |
2000 | 76 | 45 | .092 | 1.000 | .908 | 48.9 |
2001 | 15 | 7 | .553 | 1.000 | .467 | 41.4 |
2002 | 20 | 15 | .250 | .813 | .639 | 49.3 |
2003 | 4 | 2 | .500 | 1.000 | .500 | 0 |
2004 | 82 | 49 | .098 | .980 | .886 | 70.0 |
2005 | 9 | 7 | .222 | 1.000 | .778 | 12.7 |
2006 | 3 | 3 | .333 | .667 | .500 | 0 |
2007 | 52 | 59 | .231 | .949 | .739 | 66.8 |
2008 | 39 | 35 | .179 | .749 | .664 | 12.7 |
2009 | 15 | 20 | .200 | .863 | .710 | 68.9 |
2010 | 30 | 23 | .633 | .332 | .211 | 21.6 |
2011 | 22 | 13 | .591 | .671 | .341 | 54.3 |
2012 | 6 | 2 | .833 | .492 | .142 | 4.4 |
2013 | 39 | 50 | .179 | .826 | .700 | 73.2 |
2014 | 20 | 32 | .300 | .887 | .643 | 69.4 |
Tornadoes
YEAR | WARN | EVENTS | UNWARN | FAR | POD | CSI | LT |
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1995 | 9 | 6 | 4 | .778 | .333 | .154 | 4.3 |
1996 | 5 | 2 | 1 | .800 | .500 | .167 | 11.5 |
1997 | 36 | 7 | 2 | .861 | .714 | .132 | 5.9 |
1998 | 52 | 9 | 3 | .885 | .667 | .109 | 5.6 |
1999 | 16 | 5 | 1 | .750 | .800 | .235 | 22.4 |
2000 | 14 | 6 | 3 | .786 | .500 | .176 | 9.2 |
2001 | 14 | 9 | 2 | .357 | .778 | .543 | 18.1 |
2002 | 28 | 9 | 3 | .750 | .667 | .222 | 7.8 |
2003 | 8 | 1 | 0 | .875 | 1.000 | .125 | 18 |
2004 | 27 | 20 | 7 | .593 | .650 | .334 | 13.2 |
2005 | 22 | 17 | 7 | .545 | .588 | .345 | 4.9 |
2006 | 6 | 1 | 1 | 1.000 | 0 | 0 | 0.0 |
2007 | 17 | 7 | 4 | .882 | .429; | .102 | 6.1 |
2008 | 26 | 8 | 2 | .769 | .739 | .213 | 11.7 |
2009 | 24 | 8 | 2 | .750 | .708 | .227 | 15.2 |
2010 | 11 | 9 | 4 | .545 | .436 | .286 | 7.1 |
2011 | 23 | 14 | 2 | .565 | .728 | .374 | 10.9 |
2012 | 3 | 2 | 1 | .667 | .215 | .150 | 0.2 |
2013 | 21 | 5 | 5 | 1.000 | 0 | 0 | 0.0 |
2014 | 5 | 3 | 2 | .800 | .333 | .143 | 0.3 |
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High Wind
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Last Updated 4/3/15 - tjs