Alert archive / Missouri / Tornado Warnings in 1998

Tornado Warning 21, NWS Springfield, MO

May 6, 1998Ozark County, Missouri

NWS Springfield, MO issued this tornado warning at May 6, 1998, 8:18 PM CDT for Ozark County, Missouri. It was in force for 37 min. 4 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, 8:18 PM CDT (01:18 UTC)
Expired
May 6, 1998, 8:55 PM CDT
In force
37 min
Issued by
NWS Springfield, MO
Area
Whole counties

County Ozark County, MO

The radar

The Springfield radar (KSGF), 107 km from the middle of the area, began a volume at 01:22 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

TimeReportWhereRemark
May 6, 8:30 PM CDTHail 0.75Brixey, MO
May 6, 8:35 PM CDTThunderstorm Wind 60Noble, MOThunderstorn winds downed large tree limbs along Highway A.
May 6, 8:50 PM CDTThunderstorm WindElijah, MOLarge tree fell on carport and caused damage to roof.
May 6, 9:00 PM CDTThunderstorm Wind 52Gainesville, 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.

IssuedProductOfficeLasted
May 6, 4:00 PM CDTTornado WatchSPC6 hr
May 6, 8:00 PM CDTTornado WatchSPC6 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 1.3 hours before the alert went out and 124 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-pSkew-T log-p diagram, Springfield, MO at 00:00Z on 1998-05-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1358 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 00:00Z on 1998-05-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 26 square meters per square second.1939587897117136Sfc1 km3 km6 km9 kmRMLM
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.

000 
TTAA00 KSGF 070118 RRA
TORSGF
MOC153-070155-

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

THE NATIONAL WEATHER SERVICE IN SPRINGFIELD HAS ISSUED A

* TORNADO WARNING FOR...
  OZARK COUNTY IN SOUTHWESTERN MISSOURI

* UNTIL 855 PM CDT

* AT 816 PM TRAINED SPOTTERS REPORTED A DEVELOPING TORNADO 2 TO 3
  MILES SOUTH OF BRIXEY OR 10 MILES NORTH OF GAINESVILLE.  THIS STORM
  WAS MOVING EAST AT 20 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  SYCAMORE
  IN AND SOUTH OF DORA

IF YOU ARE IN THE PATH OF THIS STORM TAKE SHELTER IMMEDIATELY.


SUTTON

The office that day

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

IssuedProductOfficeCountiesLasted
May 6, 7:05 PM CDTSevere Thunderstorm WarningSGFDent, Phelps50 min
May 6, 7:15 PM CDTSevere Thunderstorm WarningSGFTexas65 min
May 6, 7:28 PM CDTTornado WarningSGFDent37 min
May 6, 7:36 PM CDTFlash Flood WarningSGFBarry, Stone, Taney6 hr
May 6, 7:36 PM CDTFlash Flood WarningSGFMcDonald6 hr
May 6, 7:45 PM CDTSevere Thunderstorm WarningSGFChristian, Taney50 min
May 6, 7:52 PM CDTSevere Thunderstorm WarningSGFDouglas, Ozark33 min
May 6, 8:55 PM CDTSevere Thunderstorm WarningSGFHowell, Ozark65 min

Nearby

Tornado Warnings in Missouri, 1998Every tornado warning in 1998Tornadoes 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.