Alert archive / Missouri / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 72, NWS St. Louis, MO

June 19, 2021Pike County, Ralls County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Jun 19, 2021, 5:46 PM CDT for Pike County, Ralls County, Missouri. It was in force for 59 min. 3 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
Jun 19, 2021, 5:46 PM CDT (22:46 UTC)
Expired
Jun 19, 2021, 6:45 PM CDT
In force
59 min
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Pike County, MO, Ralls County, MO

The radar

The St Louis radar (KLSX), 85 km from the middle of the area, began a volume at 22:49 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
Jun 19, 5:55 PM CDTHAIL 1Frankford, MO
Jun 19, 6:40 PM CDTTSTM WND DMGSaint Clement, MOREPORT VIA DOT OFFICIAL: DOWNED POWER LINES ACROSS THE ROAD. TIME ESTIMATED VIA RADAR.
Jun 19, 6:40 PM CDTHAIL 1Bowling Green, MODELAYED REPORT OF 1IN HAIL.

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
Jun 19, 2:43 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 10.8 hours before the alert went out and 234 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, Lincoln, IL at 12:00Z on 2021-06-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Lincoln, IL at 12:00Z on 2021-06-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 142 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1960 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
142 m²/s²
0-3 km storm-relative helicity
203 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

780 
WUUS53 KLSX 192246
SVRLSX
MOC163-173-192345-
/O.NEW.KLSX.SV.W.0072.210619T2246Z-210619T2345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
546 PM CDT Sat Jun 19 2021

The National Weather Service in St Louis has issued a

* Severe Thunderstorm Warning for...
  Central Ralls County in northeastern Missouri...
  Pike County in northeastern Missouri...

* Until 645 PM CDT.

* At 545 PM CDT, a severe thunderstorm was located near Frankford,
  moving southeast at 30 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* This severe thunderstorm will be near...
  Frankford around 600 PM CDT.
  Spencerburg around 605 PM CDT.

Other locations in the path of this severe thunderstorm include
Bowling Green, Louisiana and Tarrants.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3948 9106 3944 9103 3941 9096 3937 9090
      3923 9116 3923 9118 3922 9118 3918 9125
      3947 9154 3962 9127
TIME...MOT...LOC 2245Z 310DEG 10KT 3953 9135 

HAIL...1.00IN
WIND...60MPH
 
$$

GKS
1 follow-up statement
784 
WWUS53 KLSX 192256
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
556 PM CDT Sat Jun 19 2021

MOC163-173-192345-
/O.CON.KLSX.SV.W.0072.000000T0000Z-210619T2345Z/
Ralls MO-Pike MO-
556 PM CDT Sat Jun 19 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM CDT
FOR CENTRAL RALLS AND PIKE COUNTIES IN NORTHEASTERN MISSOURI...

At 556 PM CDT, a severe thunderstorm was located over Frankford,
moving southeast at 25 mph.

HAZARD...Ping pong ball size hail and 60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees.

Locations impacted include...
  Bowling Green, Tarrants and Louisiana.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and damaging winds. People outside
should move to a shelter, inside a strong building and away from
windows.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3948 9106 3944 9103 3941 9096 3937 9090
      3923 9116 3923 9118 3922 9118 3918 9125
      3947 9154 3962 9127
TIME...MOT...LOC 2256Z 308DEG 12KT 3950 9130 

HAIL...1.50IN
WIND...60MPH
 
$$

GKS

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 19, 2:15 PM CDTSevere Thunderstorm WarningLSXLincoln, Pike31 min
Jun 19, 2:44 PM CDTSevere Thunderstorm WarningLSXLincoln, Pike32 min
Jun 19, 2:52 PM CDTSevere Thunderstorm WarningLSXPike38 min
Jun 19, 2:55 PM CDTSevere Thunderstorm WarningLSXLincoln50 min
Jun 19, 3:21 PM CDTSevere Thunderstorm WarningLSXPike25 min
Jun 19, 3:31 PM CDTSevere Thunderstorm WarningLSXLincoln, Saint Charles44 min
Jun 19, 4:16 PM CDTSevere Thunderstorm WarningLSXLincoln, Saint Charles, Saint Louis44 min
Jun 19, 4:35 PM CDTFlash Flood WarningLSXSaint Charles6 hr
Jun 19, 4:43 PM CDTSevere Thunderstorm WarningLSXSaint Charles, Saint Louis47 min
Jun 19, 5:09 PM CDTSevere Thunderstorm WarningLSXSaint Charles, Saint Louis51 min
Jun 19, 5:17 PM CDTSevere Thunderstorm WarningLSXSaint Louis, City of Saint Louis43 min
Jun 19, 5:25 PM CDTSevere Thunderstorm WarningLSXJefferson, Saint Louis35 min
Jun 19, 5:31 PM CDTSevere Thunderstorm WarningLSXMarion, Ralls59 min
Jun 19, 5:58 PM CDTFlash Flood WarningLSXMarion, Pike, Ralls6 hr
Jun 19, 6:00 PM CDTSevere Thunderstorm WarningLSXJefferson, Saint Louis45 min
Jun 19, 6:46 PM CDTSevere Thunderstorm WarningLSXLincoln, Pike44 min
Jun 19, 6:54 PM CDTSevere Thunderstorm WarningLSXMonroe, Ralls51 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2021Every severe thunderstorm warning in 2021

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.