Alert archive / Missouri / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 79, NWS St. Louis, MO

May 19, 2017Cole County, Moniteau County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at May 19, 2017, 3:03 AM CDT for Cole County, Moniteau County, Missouri. It was in force for 42 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: May 19, 2017, 3:03 AM CDT (08:03 UTC)
Expired: May 19, 2017, 3:45 AM CDT
In force: 42 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Cole County, MO, Moniteau County, MO

The radar

The St Louis radar (KLSX), 143 km from the middle of the area, began a volume at 08:06 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

Time	Report	Where
May 19, 3:07 AM CDT	HAIL 0.88	California, MO
May 19, 3:15 AM CDT	HAIL 1	Jefferson City, MO
May 19, 3:20 AM CDT	HAIL 0.7	Jefferson City, MO

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

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 8.1 hours before the alert went out and 228 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: 2055 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 1439 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 44 m²/s²
0-3 km storm-relative helicity: 52 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 2.4

Open this sounding in Storm Lab

The text

As transmitted.

621 
WUUS53 KLSX 190803
SVRLSX
MOC051-135-190845-
/O.NEW.KLSX.SV.W.0079.170519T0803Z-170519T0845Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
303 AM CDT FRI MAY 19 2017

The National Weather Service in St Louis has issued a

* Severe Thunderstorm Warning for...
  Cole County in central Missouri...
  Southern Moniteau County in central Missouri...

* Until 345 AM CDT.

* At 303 AM CDT, a severe thunderstorm was located over High Point,
  moving northeast at 40 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. 

* Locations impacted include...
  Jefferson City, California, Wardsville, St. Martins, Russellville,
  Centertown, High Point, Brazito, McGirk, Hickory Hill, Marion,
  Lohman, Eugene, Elston, Osage City, Latham and Enon.

This also includes  Jefferson Landing Historic Site.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3871 9234 3869 9236 3867 9235 3867 9230
      3865 9226 3864 9221 3860 9220 3857 9213
      3856 9209 3856 9201 3834 9241 3843 9241
      3843 9262 3858 9282
TIME...MOT...LOC 0803Z 246DEG 35KT 3847 9261 

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

Tilly

The office that day

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

Issued	Product	Office	Counties	Lasted
May 19, 3:29 AM CDT	Severe Thunderstorm Warning	LSX	Cole, Moniteau	13 min
May 19, 4:03 AM CDT	Severe Thunderstorm Warning	LSX	Crawford, Franklin, Gasconade, Montgomery, Osage, Warren and 1 more	42 min
May 19, 4:12 AM CDT	Severe Thunderstorm Warning	LSX	Callaway, Montgomery, Warren	33 min
May 19, 4:20 AM CDT	Tornado Warning	LSX	Callaway, Montgomery, Warren	25 min
May 19, 4:37 AM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Pike	53 min
May 19, 4:39 AM CDT	Severe Thunderstorm Warning	LSX	Franklin, Jefferson, Saint Charles, Saint Louis, Warren, Washington and 1 more	66 min
May 19, 6:00 PM CDT	Severe Thunderstorm Warning	LSX	Boone, Callaway, Cole, Moniteau, Osage	45 min
May 19, 6:38 PM CDT	Severe Thunderstorm Warning	LSX	Boone, Callaway, Cole, Gasconade, Montgomery, Osage	52 min

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.