Alert archive / Missouri / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 101, NWS Springfield, MO

May 18, 2000Howell County, Missouri

NWS Springfield, MO issued this severe thunderstorm warning at May 18, 2000, 6:09 PM CDT for Howell County, Missouri. It was in force for 36 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 18, 2000, 6:09 PM CDT (23:09 UTC)
Expired: May 18, 2000, 6:45 PM CDT
In force: 36 min
Issued by: NWS Springfield, MO
Area: Whole counties

County Howell County, MO

The radar

The Springfield radar (KSGF), 144 km from the middle of the area, began a volume at 23:09 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 18, 6:25 PM CDT	Hail 1	Moody, MO
May 18, 6:30 PM CDT	Thunderstorm Wind	Lanton, 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 18, 3:00 PM CDT	Tornado Watch	SPC	6 hr
May 18, 6:00 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 11.2 hours before the alert went out and 171 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: 1080 J/kg
Mixed-layer CIN: -78 J/kg
Mixed-layer LCL: 944 m above ground
0-6 km bulk shear: 64 kt
0-1 km storm-relative helicity: 364 m²/s²
0-3 km storm-relative helicity: 412 m²/s²
Significant tornado parameter: 2.3
Supercell composite: 12.8

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KSGF 182312
SVRSGF
MOC091-182345-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SPRINGFIELD MO
609 PM CDT THU MAY 18 2000

THE NATIONAL WEATHER SERVICE IN SPRINGFIELD HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN HOWELL COUNTY IN SOUTH CENTRAL MISSOURI

* UNTIL 645 PM CDT

* AT 604 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 9 MILES NORTH OF VIOLA...OR 16 MILES SOUTH OF
  WEST PLAINS...MOVING EAST AT 25 MPH. THIS SEVERE THUNDERSTORM WILL
  LIKELY PRODUCE HAIL TO THE SIZE OF QUARTERS... AND WINDS IN EXCESS
  OF 60 MPH.

* THE SEVERE THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF...
  SOUTHERN HOWELL COUNTY. THE STORM WILL ALSO AFFECT INCLUDING
  HIGHWAY 142 IN EXTREME SOUTHERN HOWELL COUNTY...INCLUDING LANTON.

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A STRONG
BUILDING. DAMAGING WINDS...LARGE HAIL...FREQUENT CLOUD TO GROUND
LIGHTNING...AND VERY HEAVY RAIN ARE ALL POSSIBLE IN SEVERE
THUNDERSTORMS. STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS
PASSED.

A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER...
SEVERE THUNDERSTO1RMS CAN PRODUCE TORNADOES WITH LITTLE ADVANCE
WARNING.

SUTTON

The office that day

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

Issued	Product	Office	Counties	Lasted
May 18, 2:53 PM CDT	Severe Thunderstorm Warning	SGF	Laclede, Pulaski	37 min
May 18, 4:23 PM CDT	Severe Thunderstorm Warning	SGF	Phelps	22 min
May 18, 4:46 PM CDT	Severe Thunderstorm Warning	SGF	Ozark	44 min
May 18, 5:24 PM CDT	Severe Thunderstorm Warning	SGF	Howell, Ozark	51 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2000 Every severe thunderstorm warning in 2000

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.