Alert archive / Missouri / Tornado Watches in 1998

Tornado Watch 204

April 13, 1998Randolph County, Illinois; 30 counties in Missouri

The Storm Prediction Center issued this tornado watch at Apr 13, 1998, 1:45 PM CDT for Randolph County, Illinois; 30 counties in Missouri. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Apr 13, 1998, 1:45 PM CDT (18:45 UTC)
Expired: Apr 13, 1998, 8:00 PM CDT
In force: 6 hr
Issued by: the Storm Prediction Center

All 31 counties

Randolph County, IL, Bollinger County, MO, Butler County, MO, Camden County, MO, Cape Girardeau County, MO, Carter County, MO, Crawford County, MO, Dent County, MO, Douglas County, MO, Howell County, MO, Iron County, MO, Laclede County, MO, Madison County, MO, Maries County, MO, New Madrid County, MO, Oregon County, MO, Ozark County, MO, Perry County, MO, Phelps County, MO, Pulaski County, MO, Reynolds County, MO, Ripley County, MO, Saint Francois County, MO, Sainte Genevieve County, MO, Shannon County, MO, Stoddard County, MO, Texas County, MO, Washington County, MO, Wayne County, MO, Webster County, MO, Wright County, MO

The radar

The St Louis radar (KLSX), 133 km from the middle of the area, began a volume at 18:47 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.

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Apr 13, 2:45 PM CDT	Severe Thunderstorm Warning	SGF	Phelps	35 min
Apr 13, 2:48 PM CDT	Severe Thunderstorm Warning	LSX	Crawford	42 min
Apr 13, 3:09 PM CDT	Tornado Warning	LSX	Crawford	51 min
Apr 13, 3:24 PM CDT	Tornado Warning	LSX	Washington	51 min
Apr 13, 3:48 PM CDT	Severe Thunderstorm Warning	LSX	Crawford	42 min
Apr 13, 4:11 PM CDT	Tornado Warning	LSX	Jefferson, Washington	49 min
Apr 13, 4:22 PM CDT	Severe Thunderstorm Warning	SGF	Dent	33 min
Apr 13, 4:45 PM CDT	Tornado Warning	LSX	Sainte Genevieve, Saint Francois	60 min
Apr 13, 4:54 PM CDT	Severe Thunderstorm Warning	LSX	Iron, Washington	66 min
Apr 13, 4:54 PM CDT	Severe Thunderstorm Warning	LSX	Reynolds	66 min
Apr 13, 5:40 PM CDT	Severe Thunderstorm Warning	PAH	Wayne	50 min
Apr 13, 5:42 PM CDT	Tornado Warning	LSX	Randolph	63 min
Apr 13, 5:59 PM CDT	Severe Thunderstorm Warning	SGF	Oregon	51 min
Apr 13, 6:15 PM CDT	Tornado Warning	SGF	Oregon	35 min
Apr 13, 6:19 PM CDT	Tornado Warning	LSX	Iron, Reynolds	41 min
Apr 13, 6:19 PM CDT	Severe Thunderstorm Warning	PAH	Wayne	41 min
Apr 13, 6:23 PM CDT	Tornado Warning	PAH	Ripley	52 min
Apr 13, 6:29 PM CDT	Severe Thunderstorm Warning	PAH	Bollinger	61 min
Apr 13, 6:32 PM CDT	Tornado Warning	LSX	Madison	58 min
Apr 13, 6:52 PM CDT	Tornado Warning	LSX	Randolph	68 min
Apr 13, 7:01 PM CDT	Severe Thunderstorm Warning	PAH	Cape Girardeau	44 min
Apr 13, 7:19 PM CDT	Severe Thunderstorm Warning	PAH	Wayne	41 min
Apr 13, 7:31 PM CDT	Tornado Warning	PAH	Scott, Stoddard	44 min
Apr 13, 7:35 PM CDT	Severe Thunderstorm Warning	LSX	Randolph	40 min
Apr 13, 7:48 PM CDT	Severe Thunderstorm Warning	PAH	Cape Girardeau	27 min

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 6.8 hours before the alert went out and 257 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 804 m above ground
0-6 km bulk shear: 66 kt
0-1 km storm-relative helicity: 407 m²/s²
0-3 km storm-relative helicity: 400 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
Apr 13, 11:30 AM CDT	Severe Thunderstorm Watch	SPC	Adams, Pike	6 hr
Apr 13, 3:45 PM CDT	Tornado Watch	SPC	Adams, Bond, Brown, Calhoun, Cass, Christian and 15 more	5 hr
Apr 13, 6:30 PM CDT	Tornado Watch	SPC	Alexander, Bond, Christian, Clark, Clay, Clinton and 34 more	5 hr
Apr 13, 4:00 AM CDT	Severe Thunderstorm Watch	SPC	Adair, Andrew, Atchison, Bates, Buchanan, Caldwell and 23 more	6 hr

Nearby

Tornado Watches in Missouri, 1998 Tornado Watches in Illinois, 1998 Every tornado watch in 1998

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.