Alert archive / Missouri / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 49, NWS Springfield, MO

April 9, 2001Maries County, Phelps County, Missouri

NWS Springfield, MO issued this severe thunderstorm warning at Apr 9, 2001, 8:50 PM CDT for Maries County, Phelps County, Missouri. It was in force for 25 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
Apr 9, 2001, 8:50 PM CDT (01:50 UTC)
Expired
Apr 9, 2001, 9:15 PM CDT
In force
25 min
Issued by
NWS Springfield, MO
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Maries County, MO, Phelps County, MO

The radar

The St Louis radar (KLSX), 100 km from the middle of the area, began a volume at 01:53 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.

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 1.8 hours before the alert went out and 239 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 2001-04-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2364 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 2001-04-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 33 square meters per square second.1939587897Sfc1 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
2364 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
1707 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
33 m²/s²
0-3 km storm-relative helicity
126 m²/s²
Significant tornado parameter
0.4
Supercell composite
7.0

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KSGF 100150
SVRSGF
MOC125-161-100215-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SPRINGFIELD MO
850 PM CDT MON APR 9 2001

THE NATIONAL WEATHER SERVICE IN SPRINGFIELD HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN MARIES COUNTY IN CENTRAL MISSOURI
  NORTHEASTERN PHELPS COUNTY IN EAST CENTRAL MISSOURI

* UNTIL 915 PM CDT

* AT 848 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 8 MILES NORTH OF ST. JAMES...OR 13 MILES
  NORTHEAST OF ROLLA...MOVING NORTHEAST AT 45 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...
  MARIES AND PHELPS COUNTIES.

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A STRONG BUILDING.
DAMAGING WINDS...LARGE HAIL...FREQUENT CLOUD TO GROUND LIGHTNING...
AND VERY HEAVY RAIN4 ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS. STAY
INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

LAT...LON 3812 9180 3793 9162 3824 9129 3840 9149

FOSTER

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 9, 7:41 PM CDTSevere Thunderstorm WarningSGFBenton49 min
Apr 9, 7:44 PM CDTSevere Thunderstorm WarningSGFHickory46 min
Apr 9, 8:01 PM CDTSevere Thunderstorm WarningSGFCamden, Dallas44 min
Apr 9, 8:14 PM CDTSevere Thunderstorm WarningSGFMorgan46 min
Apr 9, 8:27 PM CDTSevere Thunderstorm WarningSGFHickory33 min
Apr 9, 8:30 PM CDTSevere Thunderstorm WarningSGFMiller45 min
Apr 9, 8:37 PM CDTSevere Thunderstorm WarningSGFLaclede38 min
Apr 9, 8:48 PM CDTSevere Thunderstorm WarningSGFCamden, Pulaski27 min
Apr 9, 9:13 PM CDTSevere Thunderstorm WarningSGFMaries, Miller, Pulaski47 min
Apr 9, 9:33 PM CDTSevere Thunderstorm WarningSGFPhelps42 min
Apr 9, 10:01 PM CDTSevere Thunderstorm WarningSGFBenton44 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2001Every severe thunderstorm warning in 2001

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.