Alert archive / Missouri / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 21, NWS Springfield, MO

February 11, 1999Laclede County, Pulaski County, Missouri

NWS Springfield, MO issued this severe thunderstorm warning at Feb 11, 1999, 12:08 PM CST for Laclede County, Pulaski County, Missouri. It was in force for 52 min. 1 report 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
Feb 11, 1999, 12:08 PM CST (18:08 UTC)
Expired
Feb 11, 1999, 1:00 PM CST
In force
52 min
Issued by
NWS Springfield, MO
Area
Whole counties

Counties Laclede County, MO, Pulaski County, MO

The radar

The Springfield radar (KSGF), 105 km from the middle of the area, began a volume at 18:07 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
Feb 11, 12:51 PM CSTThunderstorm Wind 62Ft Leonard Wood Aaf, 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
Feb 11, 11:15 AM CSTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 6.1 hours before the alert went out and 155 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 12:00Z on 1999-02-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 261 joules per kilogram.LCLLFCEL10008507005003002001001 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 12:00Z on 1999-02-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 275 square meters per square second.19395878Sfc1 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
261 J/kg
Mixed-layer CIN
-163 J/kg
Mixed-layer LCL
871 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
275 m²/s²
0-3 km storm-relative helicity
308 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSGF 111810
SVRSGF
MOC067-105-153-169-229-111900-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SPRINGFIELD MO
1208 PM CST THU FEB 11 1999

THE NATIONAL WEATHER SERVICE IN SPRINGFIELD HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  DOUGLAS COUNTY IN SOUTHWESTERN MISSOURI
  EASTERN LACLEDE COUNTY IN SOUTHWESTERN MISSOURI
  OZARK COUNTY IN SOUTHWESTERN MISSOURI
  PULASKI COUNTY IN CENTRAL MISSOURI
  WRIGHT COUNTY IN SOUTHWESTERN MISSOURI

* UNTIL 100 PM CST

* AT 1205PM DOPPLER RADAR INDICATED SEVERE THUNDERSTORMS CAPABLE OF
  PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
  LOCATED IN A LINE FROM 5 MILES WEST OF RICHLAND TO 2 MILES EAST OF
  MARSHFIELD TO CEDAR CREEK AND WERE MOVING EAST AT 50 MPH.

* THE SEVERE THUNDERSTORM(S) WILL BE NEAR...
  WAYNESVILLE AT 1220 PM
  HARTVILLE AT 1230 PM
  AVA AT 1220 PM
  GAINESVILLE AT 1235 PM


SEVERE THUNDERSTORM STRAIGHT LINE WINDS CAN OFTEN BE AS DESTRUCTIVE AS
A TORNADO.  FOR YOUR OWN PERSONAL SAFETY...MOVE TO A SAFE AREA OR
SHELTER IMMEDIATELY.

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 11, 9:19 AM CSTSevere Thunderstorm WarningSGFMcDonald, Newton41 min
Feb 11, 9:31 AM CSTSevere Thunderstorm WarningSGFJasper49 min
Feb 11, 9:59 AM CSTSevere Thunderstorm WarningSGFDade, Lawrence61 min
Feb 11, 9:59 AM CSTSevere Thunderstorm WarningSGFBarry61 min
Feb 11, 10:54 AM CSTSevere Thunderstorm WarningSGFBarry, Lawrence, Stone66 min
Feb 11, 10:54 AM CSTSevere Thunderstorm WarningSGFBenton, Hickory, St. Clair66 min
Feb 11, 10:54 AM CSTSevere Thunderstorm WarningSGFCedar, Dade, Greene, Polk66 min
Feb 11, 10:54 AM CSTSevere Thunderstorm WarningSGFChristian66 min
Feb 11, 11:33 AM CSTSevere Thunderstorm WarningSGFCamden, Dallas, Laclede, Webster47 min
Feb 11, 11:33 AM CSTSevere Thunderstorm WarningSGFChristian, Taney47 min
Feb 11, 12:08 PM CSTSevere Thunderstorm WarningSGFDouglas, Wright52 min
Feb 11, 12:08 PM CSTSevere Thunderstorm WarningSGFOzark52 min
Feb 11, 12:24 PM CSTSevere Thunderstorm WarningSGFMaries, Phelps66 min
Feb 11, 12:24 PM CSTSevere Thunderstorm WarningSGFMiller66 min
Feb 11, 1:47 PM CSTSevere Thunderstorm WarningSGFOregon, Shannon73 min

Nearby

Severe Thunderstorm Warnings in Missouri, 1999Every severe thunderstorm warning in 1999

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.