IEM :: Storm Based Warning Stats

Storm Based Warning Geometry Statistics

Pick a time period of your choice and get back a summary table of storm based warning polygon statistics. You should be able to highlight this table and paste it into Excel, if you wish. Please note that prior to formal implementation of Storm Based Warnings, the polygons were not the official warning and so their shape may not have been accurately representing the threat.
Note: Areal flood warning polygons have only been issued since summer of 2007.
Perimeter values are in kilometers and area values in square kilometers.
Links: Download shapefile of these warnings - View visual summaries

	Year	Month	Day	Hour
Start:
End:

Data valid for warnings issued between 30 Apr 2025 00:00 and 01 May 2025 00:00 UTC
Weather Forecast Office		Summary			Tornado			Severe Thunderstorm			Marine			Flash Flood			Areal Flood			Dust Storm			Snow Squall
ID	Name	Cnt	Perim	Area	Cnt	Perim	Area	Cnt	Perim	Area	Cnt	Perim	Area	Cnt	Perim	Area	Cnt	Perim	Area	Cnt	Perim	Area	Cnt	Perim	Area
BGM	Binghamton	1	304.8	4008.1	0	0.0	0.0	1	304.8	4008.1	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0
BTV	Burlington	1	240.7	1543.5	0	0.0	0.0	1	240.7	1543.5	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0
CLE	Cleveland	5	137.6	1047.4	1	115.2	653.3	4	143.2	1145.9	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0
EWX	Austin/San Antonio	5	160.0	1467.4	0	0.0	0.0	5	160.0	1467.4	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0
FWD	Dallas/Fort Worth	36	228.3	2718.8	2	114.8	654.2	18	209.3	2395.1	0	0.0	0.0	15	264.6	3372.3	1	254.2	2871.4	0	0.0	0.0	0	0.0	0.0
ILN	Wilmington	2	105.2	529.9	0	0.0	0.0	2	105.2	529.9	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0
IND	Indianapolis	7	103.2	585.1	2	74.7	286.0	5	114.7	704.7	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0
JKL	Jackson	13	134.3	875.8	0	0.0	0.0	13	134.3	875.8	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0
JSJ	San Juan	11	53.8	134.9	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0	8	63.1	171.0	3	28.9	38.5	0	0.0	0.0	0	0.0	0.0
LMK	Louisville	6	113.2	672.7	0	0.0	0.0	6	113.2	672.7	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0
LSX	St Louis	5	107.1	703.4	4	106.5	699.8	1	109.3	717.7	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0
LUB	Lubbock	10	209.7	2710.7	0	0.0	0.0	7	187.7	2178.7	0	0.0	0.0	3	260.9	3951.9	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0
LWX	Baltimore/Washington	1	469.0	5149.3	0	0.0	0.0	1	469.0	5149.3	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0
LZK	Little Rock	28	268.8	3981.0	2	137.0	990.1	19	284.0	4596.5	0	0.0	0.0	7	265.0	3164.9	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0
MAF	Midland/Odessa	13	169.5	1576.9	0	0.0	0.0	12	175.1	1655.0	0	0.0	0.0	1	101.7	640.2	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0
MRX	Morristown	5	77.4	369.9	0	0.0	0.0	4	88.0	442.9	0	0.0	0.0	1	34.9	78.1	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0
OUN	Norman	80	216.0	3035.5	11	117.9	852.2	35	221.4	3097.2	0	0.0	0.0	28	230.0	3218.7	6	299.5	5823.5	0	0.0	0.0	0	0.0	0.0
PBZ	Pittsburgh	1	311.3	3565.4	0	0.0	0.0	1	311.3	3565.4	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0
PHI	Mount Holly	1	367.5	4411.5	0	0.0	0.0	1	367.5	4411.5	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0
RLX	Charleston	7	266.5	3467.2	0	0.0	0.0	7	266.5	3467.2	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0
RNK	Blacksburg	2	119.4	764.5	0	0.0	0.0	1	135.7	1040.1	0	0.0	0.0	1	103.2	489.0	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0
SGF	Springfield	5	196.1	2603.4	1	94.2	518.4	2	202.3	2494.2	0	0.0	0.0	1	153.4	1294.2	1	328.1	6216.0	0	0.0	0.0	0	0.0	0.0
SHV	Shreveport	16	340.9	6015.6	1	90.9	519.7	12	359.0	6499.8	0	0.0	0.0	3	351.6	5910.7	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0
SJT	San Angelo	16	173.2	1831.0	0	0.0	0.0	15	174.6	1856.9	0	0.0	0.0	1	152.6	1442.6	0	0.0	0.0	0	0.0	0.0	0	0.0	0.0
TSA	Tulsa	39	208.3	2745.7	11	99.5	560.9	19	210.5	2624.9	0	0.0	0.0	4	291.3	4328.0	5	372.6	6745.3	0	0.0	0.0	0	0.0	0.0
	Total/Averages	316	205.1	2626.3	35	107.8	682.7	192	210.4	2672.3	0	0.0	0.0	73	223.5	2946.2	16	270.5	4866.9	0	0.0	0.0	0	0.0	0.0