Alert archive / Missouri / Tornado Warnings in 1998

Tornado Warning 20, NWS Springfield, MO

May 6, 1998Dent County, Missouri

NWS Springfield, MO issued this tornado warning at May 6, 1998, 7:28 PM CDT for Dent County, Missouri. It was in force for 37 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: May 6, 1998, 7:28 PM CDT (00:28 UTC)
Expired: May 6, 1998, 8:05 PM CDT
In force: 37 min
Issued by: NWS Springfield, MO
Area: Whole counties

County Dent County, MO

The radar

The St Louis radar (KLSX), 141 km from the middle of the area, began a volume at 00:32 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 was reported inside it

Time	Report	Where	Remark
May 6, 7:40 PM CDT	Hail 2.5	Jadwin, MO	Hail damaged a car.
May 6, 8:00 PM CDT	Hail 1.5	Gladden, MO

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 6, 5:30 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 0.5 hours before the alert went out and 218 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: 1358 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 1166 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 26 m²/s²
0-3 km storm-relative helicity: 178 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 2.9

Open this sounding in Storm Lab

The text

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

845 
WFUS1 KSGF 070029 RRA
TORSGF
MOC065-070105-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SPRINGFIELD MO
728 PM CDT WED MAY 6 1998

THE NATIONAL WEATHER SERVICE IN SPRINGFIELD HAS ISSUED A

* TORNADO WARNING FOR...
  DENT COUNTY IN SOUTH CENTRAL MISSOURI

* UNTIL 805 PM CDT

* AT 726 PM DOPPLER RADAR INDICATED A DEVELOPING TORNADO 10 MILES
  SOUTHWEST OF SALEM.  THIS STORM WAS MOVING EAST AT 20 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  AREAS SOUTH OF SALEM
  NORTH OF DARIEN


AVOID THE TEMPTATION OF TRYING TO CATCH A GLIMPSE OF A TORNADO.  IN
MANY CASES...BY THE TIME YOU SPOT A TORNADO IT MAY BE TOO LATE TO
PROTECT YOURSELF AGAINST ITS DANGERS.  SEEK SHELTER NOW AND REMAIN
PROTECTED UNTIL THE DANGER HAS PASSED.

RUNNELS/LINDENBERG

The office that day

Everything else NWS Springfield, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 6, 7:05 PM CDT	Severe Thunderstorm Warning	SGF	Dent, Phelps	50 min
May 6, 7:15 PM CDT	Severe Thunderstorm Warning	SGF	Texas	65 min
May 6, 7:36 PM CDT	Flash Flood Warning	SGF	Barry, Stone, Taney	6 hr
May 6, 7:36 PM CDT	Flash Flood Warning	SGF	McDonald	6 hr
May 6, 7:45 PM CDT	Severe Thunderstorm Warning	SGF	Christian, Taney	50 min
May 6, 7:52 PM CDT	Severe Thunderstorm Warning	SGF	Douglas, Ozark	33 min
May 6, 8:18 PM CDT	Tornado Warning	SGF	Ozark	37 min
May 6, 8:55 PM CDT	Severe Thunderstorm Warning	SGF	Howell, Ozark	65 min

Nearby

Tornado Warnings in Missouri, 1998 Every tornado warning in 1998 Tornadoes 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.