Alert archive / Missouri / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 102, NWS St. Louis, MO

May 9, 2003Pike County, Ralls County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at May 9, 2003, 5:47 PM CDT for Pike County, Ralls County, Missouri. It was in force for 43 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 9, 2003, 5:47 PM CDT (22:47 UTC)
Expired: May 9, 2003, 6:30 PM CDT
In force: 43 min
Issued by: NWS St. Louis, MO
Area: Counties, with a storm outline in the text

Counties Pike County, MO, Ralls County, MO

The radar

The St Louis radar (KLSX), 110 km from the middle of the area, began a volume at 22:50 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 9, 4:45 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 10.8 hours before the alert went out and 246 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: 817 J/kg
Mixed-layer CIN: -137 J/kg
Mixed-layer LCL: 495 m above ground
0-6 km bulk shear: 83 kt
0-1 km storm-relative helicity: 205 m²/s²
0-3 km storm-relative helicity: 242 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.1

Open this sounding in Storm Lab

The text

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

545 
WUUS53 KLSX 092247
SVRLSX
MOC163-173-092330-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
544 PM CDT FRI MAY 9 2003

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN PIKE COUNTY IN NORTHEAST MISSOURI
  EASTERN RALLS COUNTY IN NORTHEAST MISSOURI

* UNTIL 630 PM CDT

* AT 544 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A SEVERE THUNDERSTORM OVER SPENCERBURG...MOVING NORTHEAST AT 40
  MPH. STORM SPOTTERS REPORTED QUARTER SIZE HAIL IN PERRY AT 535
  PM

* LOCATIONS IMPACTED INCLUDE...
  NEW LONDON
  FRANKFORD

THIS SEVERE THUNDERSTORM HAS A HISTORY OF PRODUCING LARGE DESTRUCTIVE
HAIL. CONSIDERABLE DAMAGE IS POSSIBLE. STAY INSIDE...AND AVOID
OUTSIDE WALLS AND WINDOWS

A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER...
SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE
WARNING.

LAT...LON 3956 9160 3933 9142 3944 9103 3969 9132

$$

GKS

The office that day

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

Issued	Product	Office	Counties	Lasted
May 8, 7:24 PM CDT	Severe Thunderstorm Warning	LSX	Knox	36 min
May 8, 7:48 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Monroe, Ralls	27 min
May 8, 8:21 PM CDT	Severe Thunderstorm Warning	LSX	Marion	39 min
May 8, 10:21 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln	39 min
May 8, 10:26 PM CDT	Severe Thunderstorm Warning	LSX	Monroe	49 min
May 8, 10:51 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Boone	54 min
May 8, 11:03 PM CDT	Tornado Warning	LSX	Audrain, Boone	42 min
May 8, 11:45 PM CDT	Severe Thunderstorm Warning	LSX	Audrain	30 min
May 9, 12:04 AM CDT	Severe Thunderstorm Warning	LSX	Pike, Ralls	41 min
May 9, 5:12 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Monroe, Ralls	48 min
May 9, 5:59 PM CDT	Severe Thunderstorm Warning	LSX	Boone	46 min
May 9, 6:05 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Monroe	40 min
May 9, 6:17 PM CDT	Tornado Warning	LSX	Pike	43 min
May 9, 6:18 PM CDT	Tornado Warning	LSX	Boone	42 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2003 Every severe thunderstorm warning in 2003

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.