Alert archive / Missouri / Tornado Warnings in 2019

Tornado Warning 8, NWS St. Louis, MO

April 30, 20194 counties in Missouri

NWS St. Louis, MO issued this tornado warning at Apr 30, 2019, 11:15 PM CDT for 4 counties in Missouri. It was in force for 30 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Apr 30, 2019, 11:15 PM CDT (04:15 UTC)
Expired
Apr 30, 2019, 11:45 PM CDT
In force
30 min
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

Counties Iron County, MO, Reynolds County, MO, Saint Francois County, MO, Washington County, MO

The radar

The St Louis radar (KLSX), 119 km from the middle of the area, began a volume at 04:19 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
Apr 30, 11:15 PM CDTHAIL 0.75 Ssw Belgrade, MO
Apr 30, 11:26 PM CDTTORNADO4 Ssw Caledonia, MOEF1 TORNADO WITH PATH LENGTH AROUND 0.06 MILES AND WIDTH AROUND 30 YARDS. A WEAK SHORT-LIVED TORNADO DESTROYED A FARM OUTBUILDING JUST WEST OF COUNTY ROAD 21 IN NORTHEAST IRON COUNTY. DAMAGE WAS STREWN TO THE NORTHEAST OF THE TRACK.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

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

IssuedProductOfficeLasted
Apr 30, 8:03 PM CDTTornado WatchSPC5 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 4.3 hours before the alert went out and 286 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 2019-05-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 390 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 00:00Z on 2019-05-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 158 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
390 J/kg
Mixed-layer CIN
-76 J/kg
Mixed-layer LCL
893 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
158 m²/s²
0-3 km storm-relative helicity
312 m²/s²
Significant tornado parameter
0.2
Supercell composite
4.0

Open this sounding in Storm Lab

The text

As transmitted.

643 
WFUS53 KLSX 010415
TORLSX
MOC093-179-187-221-010445-
/O.NEW.KLSX.TO.W.0008.190501T0415Z-190501T0445Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service St Louis MO
1115 PM CDT Tue Apr 30 2019

The National Weather Service in St Louis has issued a

* Tornado Warning for...
  Northern Iron County in southeastern Missouri...
  Northeastern Reynolds County in southeastern Missouri...
  Southern Washington County in east central Missouri...
  Southwestern St. Francois County in southeastern Missouri...

* Until 1145 PM CDT.
    
* At 1115 PM CDT, a severe thunderstorm capable of producing a
  tornado was located 7 miles east of Oates, moving east at 50 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This dangerous storm will be near...
  Belleview around 1125 PM CDT.
  Ironton, Pilot Knob, Iron Mountain Lake, Arcadia and Iron Mountain 
  around 1135 PM CDT.
  Roselle around 1140 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Belgrade, Black, Doe Run, Caledonia and Granite.

This also includes St. Joe State Park, Johnsons Shut-Ins State Park,
Fort Davidson Historic Site, Elephant Rocks State Park, and Taum Sauk
Mountain State Park.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.

&&

LAT...LON 3750 9104 3782 9106 3782 9050 3764 9047
      3764 9053 3760 9053 3760 9055 3752 9055
TIME...MOT...LOC 0415Z 263DEG 45KT 3761 9092 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

GKS

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 30, 7:32 PM CDTAreal Flood AdvisoryLSXSaint Charles, Saint Louis, City of Saint Louis3 hr
Apr 30, 7:46 PM CDTRiver Flood WarningLSXReynolds3 days
Apr 30, 8:05 PM CDTAreal Flood WarningLSXKnox, Lewis, Marion, Monroe, Ralls, Shelby24 hr
Apr 30, 9:44 PM CDTRiver Flood WarningLSXMarion3 days
Apr 30, 9:52 PM CDTAreal Flood WarningLSXAudrain, Boone, Callaway, Cole, Moniteau, Osage24 hr
Apr 30, 10:01 PM CDTAreal Flood WarningLSXFranklin, Gasconade, Jefferson, Lincoln, Montgomery, Pike and 4 more24 hr
Apr 30, 10:26 PM CDTTornado WarningLSXCrawford49 min
Apr 30, 10:47 PM CDTSevere Thunderstorm WarningLSXIron, Reynolds28 min
Apr 30, 11:05 PM CDTSevere Thunderstorm WarningLSXIron, Jefferson, Sainte Genevieve, Saint Francois, Washington40 min
Apr 30, 11:18 PM CDTRiver Flood WarningLSXLewis64 hr
Apr 30, 11:20 PM CDTSevere Thunderstorm WarningLSXIron, Madison, Reynolds40 min
Apr 30, 11:23 PM CDTRiver Flood WarningLSXSaint Charles32 hr
Apr 30, 11:26 PM CDTRiver Flood WarningLSXOsage26 hr
Apr 30, 11:29 PM CDTTornado WarningLSXJefferson, Sainte Genevieve, Saint Francois, Washington31 min
Apr 30, 11:44 PM CDTSevere Thunderstorm WarningLSXIron, Jefferson, Madison, Sainte Genevieve, Saint Francois46 min
Apr 30, 11:51 PM CDTAreal Flood WarningLSXCrawford, Iron, Madison, Reynolds, Sainte Genevieve, Saint Francois and 1 more24 hr
Apr 30, 11:52 PM CDTTornado WarningLSXJefferson, Sainte Genevieve, Saint Francois23 min
May 1, 12:01 AM CDTRiver Flood WarningLSXBoone9 hr
May 1, 12:25 AM CDTSevere Thunderstorm WarningLSXSainte Genevieve, Saint Francois50 min
May 1, 1:18 AM CDTRiver Flood WarningLSXCole58 hr
May 1, 3:44 AM CDTRiver Flood WarningLSXLewis3 days
May 1, 3:57 AM CDTRiver Flood WarningLSXLincoln33 hr
May 1, 6:22 AM CDTRiver Flood WarningLSXCrawford, Washington50 hr
May 1, 9:15 AM CDTRiver Flood WarningLSXFranklin3 days
May 1, 9:15 AM CDTRiver Flood WarningLSXCrawford25 hr
May 1, 9:15 AM CDTRiver Flood WarningLSXFranklin, Jefferson5 days
May 1, 9:15 AM CDTRiver Flood WarningLSXJefferson, Saint Louis4 days
May 1, 11:59 AM CDTRiver Flood WarningLSXJefferson, Saint Louis15 days

Nearby

Tornado Warnings in Missouri, 2019Every tornado warning in 2019Tornadoes in 2019

Sources

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