Alert archive / Missouri / Tornado Warnings in 1998

Tornado Warning 17, NWS Springfield, MO

April 15, 1998Hickory County, Polk County, St. Clair County, Missouri

NWS Springfield, MO issued this tornado warning at Apr 15, 1998, 4:57 AM CDT for Hickory County, Polk County, St. Clair County, Missouri. It was in force for 63 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: Apr 15, 1998, 4:57 AM CDT (09:57 UTC)
Expired: Apr 15, 1998, 6:00 AM CDT
In force: 63 min
Issued by: NWS Springfield, MO
Area: Whole counties

Counties Hickory County, MO, Polk County, MO, St. Clair County, MO

The radar

The Springfield radar (KSGF), 71 km from the middle of the area, began a volume at 09:58 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
Apr 15, 5:10 AM CDT	Hail 0.75	Flemington, MO
Apr 15, 5:15 AM CDT	Hail 1	Preston, 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
Apr 14, 11:45 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 10.0 hours before the alert went out and 111 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: 184 J/kg
Mixed-layer CIN: -27 J/kg
Mixed-layer LCL: 2557 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 126 m²/s²
0-3 km storm-relative helicity: 262 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

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

367 
WFUS1 KSGF 150958 RRA
TORSGF
MOC085-167-185-151100-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SPRINGFIELD MO
457 AM CDT WED APR 15 1998

* TORNADO WARNING FOR
  SOUTHERN HICKORY COUNTY - CENTRAL MISSOURI
  NORTHERN POLK COUNTY - SOUTHWESTERN MISSOURI
  SOUTHEASTERN ST. CLAIR COUNTY - WEST CENTRAL MISSOURI

* UNTIL 600 AM CDT
 
* SOME AREAS AFFECTED
  WEAUBLEAU BY 503 AM
  HUMANSVILLE BY 505 AM
  FLEMINGTON BY 510 AM

* AT 455 AM SPRINGFIELD DOPPLER RADAR INDICATED A DEVELOPING
  TORNADO NEAR COLLINS OR 25 MILES NORTHWEST OF BOLIVAR.
  THIS STORM WAS MOVING EAST-SOUTHEAST AT 35 MPH.
 
DO NOT USE YOUR CAR TO OUTRUN A TORNADO.  CARS ARE EASILY TOSSED
AROUND BY TORNADO WINDS.  IF YOU ARE CAUGHT IN THE PATH OF A
TORNADO...LEAVE THE CAR AND GO TO A STRONG BUILDING.  IF NO
STRUCTURE IS NEARBY...SEEK SHELTER IN A DITCH OR LOW SPOT.

DUSTY/GORDON

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 15, 12:25 AM CDT	Tornado Warning	SGF	Jasper	65 min
Apr 15, 12:38 AM CDT	Tornado Warning	SGF	Newton	62 min
Apr 15, 12:58 AM CDT	Tornado Warning	SGF	Barton, Vernon	52 min
Apr 15, 1:10 AM CDT	Tornado Warning	SGF	Cedar, Dade	65 min
Apr 15, 1:15 AM CDT	Tornado Warning	SGF	Lawrence	65 min
Apr 15, 1:39 AM CDT	Tornado Warning	SGF	Christian, Greene	66 min
Apr 15, 1:43 AM CDT	Tornado Warning	SGF	Vernon	62 min
Apr 15, 1:50 AM CDT	Tornado Warning	SGF	Polk	65 min
Apr 15, 2:17 AM CDT	Tornado Warning	SGF	Cedar, St. Clair	63 min
Apr 15, 3:03 AM CDT	Tornado Warning	SGF	Hickory	62 min
Apr 15, 3:39 AM CDT	Tornado Warning	SGF	Camden, Dallas	66 min
Apr 15, 3:57 AM CDT	Tornado Warning	SGF	Laclede	63 min
Apr 15, 4:28 AM CDT	Tornado Warning	SGF	Pulaski	62 min
Apr 15, 5:31 AM CDT	Severe Thunderstorm Warning	SGF	Dallas	34 min
Apr 15, 5:45 AM CDT	Severe Thunderstorm Warning	SGF	Laclede	50 min
Apr 15, 6:12 AM CDT	Severe Thunderstorm Warning	SGF	Phelps, Pulaski, Texas	63 min
Apr 15, 6:39 AM CDT	Severe Thunderstorm Warning	SGF	Dent	51 min
Apr 15, 12:19 PM CDT	Severe Thunderstorm Warning	SGF	St. Clair	51 min
Apr 15, 1:34 PM CDT	Severe Thunderstorm Warning	SGF	Benton, Camden, Morgan	66 min
Apr 15, 1:55 PM CDT	Tornado Warning	SGF	Camden, Morgan	65 min
Apr 15, 2:15 PM CDT	Severe Thunderstorm Warning	SGF	Miller	65 min
Apr 15, 2:44 PM CDT	Severe Thunderstorm Warning	SGF	Maries	51 min
Apr 15, 3:26 PM CDT	Tornado Warning	SGF	Maries	19 min
Apr 15, 3:44 PM CDT	Severe Thunderstorm Warning	SGF	Maries	46 min
Apr 15, 5:56 PM CDT	Severe Thunderstorm Warning	SGF	Laclede	49 min
Apr 15, 6:07 PM CDT	Severe Thunderstorm Warning	SGF	Howell, Shannon	63 min
Apr 15, 6:11 PM CDT	Severe Thunderstorm Warning	SGF	Pulaski	64 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.