Alert archive / Missouri / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 69, NWS St. Louis, MO

April 28, 2017Iron County, Reynolds County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Apr 28, 2017, 9:40 PM CDT for Iron County, Reynolds County, Missouri. It was in force for 29 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: Apr 28, 2017, 9:40 PM CDT (02:40 UTC)
Expired: Apr 28, 2017, 10:09 PM CDT
In force: 29 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Hail: 1.25 in
Wind: 50.0 mph

Counties Iron County, MO, Reynolds County, MO

The radar

The St Louis radar (KLSX), 164 km from the middle of the area, began a volume at 02:42 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, 2.7 hours before the alert went out and 269 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: 65 J/kg
Mixed-layer CIN: -331 J/kg
Mixed-layer LCL: 506 m above ground
0-6 km bulk shear: 74 kt
0-1 km storm-relative helicity: 55 m²/s²
0-3 km storm-relative helicity: 72 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

948 
WUUS53 KLSX 290240
SVRLSX
MOC093-179-290330-
/O.NEW.KLSX.SV.W.0069.170429T0240Z-170429T0330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
940 PM CDT FRI APR 28 2017

The National Weather Service in St Louis has issued a

* Severe Thunderstorm Warning for...
  Southeastern Iron County in southeastern Missouri...
  Southeastern Reynolds County in southeastern Missouri...

* Until 1030 PM CDT.

* At 940 PM CDT, a severe thunderstorm was located near Ellington,
  moving northeast at 50 mph.

  HAZARD...Half dollar size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Damage to vehicles is expected. 

* Locations impacted include...
  Ellington, Annapolis, Des Arc, Sabula and Vulcan. 

This also includes  Clearwater Lake Recreational Area.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3720 9105 3753 9056 3727 9055 3727 9074
      3717 9074 3717 9075 3714 9076 3710 9101
TIME...MOT...LOC 0240Z 239DEG 43KT 3719 9095 

HAIL...1.25IN
WIND...<50MPH
 
$$

TES

2 follow-up statements

114 
WWUS53 KLSX 290248
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
948 PM CDT FRI APR 28 2017

MOC093-179-290330-
/O.CON.KLSX.SV.W.0069.000000T0000Z-170429T0330Z/
Iron MO-Reynolds MO-
948 PM CDT FRI APR 28 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1030 PM CDT
FOR SOUTHEASTERN IRON AND SOUTHEASTERN REYNOLDS COUNTIES...

At 947 PM CDT, a severe thunderstorm was located near Ellington,
moving northeast at 50 mph.

HAZARD...Golf ball size hail. 

SOURCE...Radar indicated. 

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

Locations impacted include...
Annapolis, Des Arc, Sabula and Vulcan. 

This also includes  Clearwater Lake Recreational Area.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.

&&

LAT...LON 3726 9094 3753 9056 3727 9055 3727 9074
      3717 9074 3717 9075 3714 9076 3714 9090
TIME...MOT...LOC 0247Z 239DEG 43KT 3724 9085 

HAIL...1.75IN
WIND...<50MPH
 
$$

TES

015 
WWUS53 KLSX 290309
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
1009 PM CDT FRI APR 28 2017

MOC093-179-290319-
/O.CAN.KLSX.SV.W.0069.000000T0000Z-170429T0330Z/
Iron MO-Reynolds MO-
1009 PM CDT FRI APR 28 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN IRON AND
SOUTHEASTERN REYNOLDS COUNTIES IS CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning has been cancelled.  However small hail is
still possible with this thunderstorm.

A severe thunderstorm watch remains in effect until 500 AM CDT for
southeastern Missouri.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
St Louis.

LAT...LON 3726 9094 3753 9056 3727 9055 3727 9074
      3717 9074 3717 9075 3714 9076 3714 9090
TIME...MOT...LOC 0308Z 239DEG 43KT 3738 9056 

$$

TES

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 28, 8:28 PM CDT	River Flood Warning	LSX	Cole	7 days
Apr 28, 8:28 PM CDT	River Flood Warning	LSX	Osage	9 days
Apr 28, 8:28 PM CDT	River Flood Warning	LSX	Osage	3 days
Apr 28, 8:52 PM CDT	River Flood Warning	LSX	Lincoln	4 days
Apr 28, 8:52 PM CDT	River Flood Warning	LSX	Lincoln	14 days
Apr 28, 8:52 PM CDT	River Flood Warning	LSX	Saint Charles	69 hr
Apr 28, 9:10 PM CDT	River Flood Warning	LSX	Reynolds	7 days
Apr 28, 9:23 PM CDT	River Flood Warning	LSX	Gasconade, Montgomery	12 days
Apr 28, 9:23 PM CDT	River Flood Warning	LSX	Gasconade, Montgomery	11 days
Apr 28, 9:23 PM CDT	River Flood Warning	LSX	Franklin, Warren	9 days
Apr 28, 9:23 PM CDT	River Flood Warning	LSX	Saint Charles, Saint Louis	11 days
Apr 28, 10:18 PM CDT	River Flood Warning	LSX	Lewis	20 days
Apr 28, 10:18 PM CDT	River Flood Warning	LSX	Marion	19 days
Apr 28, 10:18 PM CDT	River Flood Warning	LSX	Marion	10 days
Apr 28, 10:18 PM CDT	River Flood Warning	LSX	Ralls	20 days
Apr 28, 10:18 PM CDT	River Flood Warning	LSX	Lincoln	43 days
Apr 28, 10:18 PM CDT	River Flood Warning	LSX	Saint Charles	40 days
Apr 28, 10:18 PM CDT	River Flood Warning	LSX	Saint Louis, City of Saint Louis	16 days
Apr 28, 10:18 PM CDT	River Flood Warning	LSX	Perry, Sainte Genevieve	43 days
Apr 28, 11:33 PM CDT	Special Weather Statement	LSX	Franklin	42 min
Apr 28, 11:42 PM CDT	Severe Thunderstorm Warning	LSX	Iron, Reynolds, Washington	48 min
Apr 29, 12:41 AM CDT	Severe Thunderstorm Warning	LSX	Sainte Genevieve	49 min
Apr 29, 1:53 AM CDT	Flash Flood Warning	LSX	Crawford, Iron, Madison, Reynolds, Sainte Genevieve, Saint Francois and 1 more	24 hr
Apr 29, 6:44 AM CDT	River Flood Warning	LSX	Madison, Saint Francois	48 hr
Apr 29, 6:44 AM CDT	River Flood Warning	LSX	Madison, Saint Francois	50 hr
Apr 29, 10:45 AM CDT	River Flood Warning	LSX	Callaway, Osage	9 days
Apr 29, 1:07 PM CDT	Special Weather Statement	LSX	Callaway, Cole, Osage	38 min
Apr 29, 1:47 PM CDT	Flash Flood Warning	LSX	Audrain, Boone, Callaway, Cole, Moniteau, Osage	8 hr
Apr 29, 2:47 PM CDT	Special Weather Statement	LSX	Franklin, Jefferson, Saint Charles, Saint Louis, Warren	58 min
Apr 29, 2:53 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Lincoln, Saint Charles, Saint Louis, Warren	52 min
Apr 29, 3:08 PM CDT	Flash Flood Warning	LSX	Audrain, Gasconade, Lincoln, Marion, Montgomery, Pike and 2 more	8 hr
Apr 29, 3:17 PM CDT	River Flood Warning	LSX	Madison	48 hr
Apr 29, 3:24 PM CDT	Severe Thunderstorm Warning	LSX	Saint Charles, Saint Louis, City of Saint Louis	51 min
Apr 29, 4:45 PM CDT	River Flood Warning	LSX	Monroe	4 days
Apr 29, 4:55 PM CDT	River Flood Warning	LSX	Marion	4 days
Apr 29, 4:55 PM CDT	River Flood Warning	LSX	Marion	47 hr

Nearby

Severe Thunderstorm Warnings in Missouri, 2017 Every severe thunderstorm warning in 2017

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.