Alert archive / Illinois / Tornado Watches in 1999

Tornado Watch 216

May 5, 19994 states

The Storm Prediction Center issued this tornado watch at May 5, 1999, 3:00 PM CDT for 4 states. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: May 5, 1999, 3:00 PM CDT (20:00 UTC)
Expired: May 5, 1999, 9:00 PM CDT
In force: 6 hr
Issued by: the Storm Prediction Center

All 81 counties

Alexander County, IL, Clark County, IL, Clay County, IL, Coles County, IL, Crawford County, IL, Cumberland County, IL, Edgar County, IL, Edwards County, IL, Effingham County, IL, Franklin County, IL, Gallatin County, IL, Hamilton County, IL, Hardin County, IL, Jackson County, IL, Jasper County, IL, Jefferson County, IL, Johnson County, IL, Lawrence County, IL, Marion County, IL, Massac County, IL, Pope County, IL, Pulaski County, IL, Richland County, IL, Saline County, IL, Union County, IL, Wabash County, IL, Wayne County, IL, White County, IL, Williamson County, IL, Brown County, IN, Clay County, IN, Daviess County, IN, Dubois County, IN, Gibson County, IN, Greene County, IN, Hancock County, IN, Hendricks County, IN, Johnson County, IN, Knox County, IN, Lawrence County, IN, Marion County, IN, Martin County, IN, Monroe County, IN, Morgan County, IN, Orange County, IN, Owen County, IN, Parke County, IN, Pike County, IN, Posey County, IN, Putnam County, IN, Shelby County, IN, Spencer County, IN, Sullivan County, IN, Vanderburgh County, IN, Vermillion County, IN, Vigo County, IN, Warrick County, IN, Ballard County, KY, Caldwell County, KY, Calloway County, KY, Carlisle County, KY, Crittenden County, KY, Daviess County, KY, Fulton County, KY, Graves County, KY, Henderson County, KY, Hickman County, KY, Hopkins County, KY, Livingston County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, McLean County, KY, Trigg County, KY, Union County, KY, Webster County, KY, Cape Girardeau County, MO, Mississippi County, MO, New Madrid County, MO, Scott County, MO, Stoddard County, MO

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
May 5, 3:02 PM CDT	Severe Thunderstorm Warning	PAH	Saline	43 min
May 5, 3:11 PM CDT	Severe Thunderstorm Warning	ILX	Jasper, Richland	49 min
May 5, 3:28 PM CDT	Severe Thunderstorm Warning	ILX	Crawford	62 min
May 5, 4:03 PM CDT	Severe Thunderstorm Warning	PAH	Ballard, Carlisle, McCracken	57 min
May 5, 4:18 PM CDT	Severe Thunderstorm Warning	PAH	Hickman	27 min
May 5, 5:36 PM CDT	Severe Thunderstorm Warning	LSX	Marion	49 min
May 5, 5:41 PM CDT	Severe Thunderstorm Warning	ILX	Clay, Richland	49 min
May 5, 5:41 PM CDT	Severe Thunderstorm Warning	PAH	Calloway, Trigg	49 min
May 5, 5:53 PM CDT	Severe Thunderstorm Warning	PAH	Posey, Vanderburgh	47 min
May 5, 6:02 PM CDT	Severe Thunderstorm Warning	PAH	Webster	28 min
May 5, 6:09 PM CDT	Severe Thunderstorm Warning	PAH	Gibson, Pike, Warrick	51 min
May 5, 6:11 PM CDT	Tornado Warning	LSX	Marion	49 min
May 5, 6:17 PM CDT	Severe Thunderstorm Warning	PAH	Daviess, Henderson, McLean	43 min
May 5, 6:25 PM CDT	Severe Thunderstorm Warning	ILX	Crawford, Jasper	65 min
May 5, 6:37 PM CDT	Severe Thunderstorm Warning	IND	Knox	23 min
May 5, 6:40 PM CDT	Severe Thunderstorm Warning	LMK	Dubois	30 min
May 5, 6:57 PM CDT	Severe Thunderstorm Warning	PAH	Spencer	33 min
May 5, 6:57 PM CDT	Severe Thunderstorm Warning	PAH	Pike	33 min
May 5, 8:15 PM CDT	Severe Thunderstorm Warning	IND	Bartholomew, Brown	35 min
May 5, 8:20 PM CDT	Severe Thunderstorm Warning	IND	Johnson	30 min
May 5, 8:30 PM CDT	Severe Thunderstorm Warning	IND	Shelby	30 min

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 8.0 hours before the alert went out and 258 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 49 J/kg
Mixed-layer CIN: -201 J/kg
Mixed-layer LCL: 869 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 208 m²/s²
0-3 km storm-relative helicity: 200 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 5, 6:45 PM CDT	Tornado Watch	SPC	Perry, Spencer	5 hr
May 5, 2:00 PM CDT	Tornado Watch	SPC	Dunklin, Pemiscot	7 hr

Nearby

Tornado Watches in Illinois, 1999 Tornado Watches in Indiana, 1999 Tornado Watches in Kentucky, 1999 Every tornado watch in 1999

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.