Alert archive / Missouri / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 39, NWS St. Louis, MO

April 17, 20134 counties in Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Apr 17, 2013, 5:55 PM CDT for 4 counties in Missouri. It was in force for 50 min. 9 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 17, 2013, 5:55 PM CDT (22:55 UTC)
Expired: Apr 17, 2013, 6:45 PM CDT
In force: 50 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Marion County, MO, Monroe County, MO, Ralls County, MO, Shelby County, MO

The radar

The St Louis radar (KLSX), 147 km from the middle of the area, began a volume at 22:58 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	Remark
Apr 17, 5:55 PM CDT	HAIL 0.88	Paris, MO
Apr 17, 6:10 PM CDT	TSTM WND DMG	Monroe City, MO	SPOTTER REPORTS TREES AND POWER LINES DOWN ACROSS PARTS OF MONROE CITY. TIME ESTIMATED FROM RADAR.
Apr 17, 6:12 PM CDT	TSTM WND DMG	Monroe City, MO	WINDOWS BLOWN OUT OF HIGHWAY PATROL SQUAD CAR. SIGN AND TREE DAMAGE IN AREA AS WELL.
Apr 17, 6:15 PM CDT	TSTM WND DMG	8 Wnw Spaulding, MO	2 LARGE GRAIN BINS TOTALLY DESTROYED BY HIGH WINDS...GRAIN ELEVATOR DAMAGED AS WELL.
Apr 17, 6:15 PM CDT	TSTM WND DMG	Monroe City, MO	ON EAST SIDE OF TOWN...3 STORAGE SHEDS 15X20 FT DESTROYED AT SHOPPING MALL...POWER POLES SNAPPED AND POWER LINES ARE DOWN
Apr 17, 6:30 PM CDT	HAIL 0.5	9 W Palmyra, MO	30-40 MPH WINDS
Apr 17, 6:35 PM CDT	TSTM WND DMG	Rensselaer, MO	STRONG WINDS BLEW A WOODEN SWING SET APPROX 100 YARDS
Apr 17, 6:36 PM CDT	HAIL 0.75	1 S Hunnewell, MO
Apr 17, 6:40 PM CDT	HAIL 0.7	Monroe City, MO

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.

Issued	Product	Office	Lasted
Apr 17, 11:11 AM CDT	Tornado Watch	SPC	11 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 10.9 hours before the alert went out and 273 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 540 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 186 m²/s²
0-3 km storm-relative helicity: 299 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 6.8

Open this sounding in Storm Lab

The text

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

441 
WUUS53 KLSX 172255
SVRLSX
MOC127-137-173-205-172345-
/O.NEW.KLSX.SV.W.0039.130417T2255Z-130417T2345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
555 PM CDT WED APR 17 2013

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MARION COUNTY IN NORTHEAST MISSOURI...
  NORTHEASTERN MONROE COUNTY IN NORTHEAST MISSOURI...
  NORTHWESTERN RALLS COUNTY IN NORTHEAST MISSOURI...
  SOUTHEASTERN SHELBY COUNTY IN NORTHEAST MISSOURI...

* UNTIL 645 PM CDT

* AT 552 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 6 MILES NORTHEAST
  OF PARIS...AND MOVING NORTHEAST AT 40 MPH.

  HAZARD...QUARTER SIZE HAIL AND 60 MPH WIND GUSTS.

  SOURCE...TRAINED WEATHER SPOTTERS. SPOTTERS REPORTED WIND DAMAGE   
           TO A GARAGE IN PARIS AT 650 PM.

  IMPACT...HAIL DAMAGE TO VEHICLES AND CROPS IS EXPECTED. EXPECT WIND
           DAMAGE TO ROOFS...SIDING AND TREES.

* LOCATIONS IMPACTED INCLUDE...
  MONROE CITY...PALMYRA...WARREN...RENSSELAER...PHILADELPHIA...
  STOUTSVILLE...INDIAN CREEK AND HUNNEWELL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 3995 9172 3979 9137 3943 9190 3951 9207
TIME...MOT...LOC 2254Z 221DEG 36KT 3957 9192

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

$$

CVKING

1 follow-up statement

260 
WWUS53 KLSX 172314
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
614 PM CDT WED APR 17 2013

MOC127-137-173-205-172345-
/O.CON.KLSX.SV.W.0039.000000T0000Z-130417T2345Z/
MARION MO-MONROE MO-RALLS MO-SHELBY MO-
614 PM CDT WED APR 17 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
SHELBY...NORTHWESTERN RALLS...NORTHEASTERN MONROE AND MARION COUNTIES
UNTIL 645 PM CDT...

AT 611 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR MONROE CITY...
AND MOVING NORTHEAST AT 35 MPH.

HAZARD...QUARTER SIZE HAIL AND 70 MPH WIND GUSTS.

SOURCE...LAW ENFORCEMENT. WINDOW WAS BLOWN OUT OF SQUAD CAR NEAR     
         MONROE CITY.

IMPACT...HAIL DAMAGE TO VEHICLES AND CROPS IS EXPECTED. EXPECT
         CONSIDERABLE TREE DAMAGE. WIND DAMAGE IS ALSO LIKELY TO
         MOBILE HOMES...ROOFS AND OUTBUILDINGS.

LOCATIONS IMPACTED INCLUDE...
PALMYRA...WARREN...RENSSELAER AND PHILADELPHIA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 3995 9172 3979 9137 3943 9190 3951 9207
TIME...MOT...LOC 2314Z 228DEG 29KT 3967 9170

HAIL...1.00IN
WIND...70MPH

$$

CVKING

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 17, 9:07 AM CDT	River Flood Warning	LSX	Lewis	5 days
Apr 17, 9:07 AM CDT	River Flood Warning	LSX	Lewis	5 days
Apr 17, 9:07 AM CDT	River Flood Warning	LSX	Marion	5 days
Apr 17, 9:07 AM CDT	River Flood Warning	LSX	Marion	3 days
Apr 17, 10:46 AM CDT	River Flood Warning	LSX	Boone, Callaway, Cole, Moniteau	5 days
Apr 17, 10:46 AM CDT	River Flood Warning	LSX	Callaway, Osage	8 days
Apr 17, 10:46 AM CDT	River Flood Warning	LSX	Gasconade, Montgomery	8 days
Apr 17, 10:46 AM CDT	River Flood Warning	LSX	Gasconade, Montgomery	8 days
Apr 17, 10:46 AM CDT	River Flood Warning	LSX	Franklin, Warren	6 days
Apr 17, 10:46 AM CDT	River Flood Warning	LSX	Saint Charles, Saint Louis	8 days
Apr 17, 11:00 AM CDT	River Flood Warning	LSX	Lincoln	3 days
Apr 17, 11:00 AM CDT	River Flood Warning	LSX	Monroe	5 days
Apr 17, 11:48 AM CDT	River Flood Warning	LSX	Lewis	36 days
Apr 17, 11:48 AM CDT	River Flood Warning	LSX	Marion	36 days
Apr 17, 11:48 AM CDT	River Flood Warning	LSX	Marion	34 days
Apr 17, 11:48 AM CDT	River Flood Warning	LSX	Ralls	37 days
Apr 17, 11:48 AM CDT	River Flood Warning	LSX	Saint Charles	32 days
Apr 17, 11:48 AM CDT	River Flood Warning	LSX	Saint Louis, City of Saint Louis	24 days
Apr 17, 11:48 AM CDT	River Flood Warning	LSX	Perry, Sainte Genevieve	39 days
Apr 17, 12:40 PM CDT	River Flood Warning	LSX	Jefferson, Saint Louis	31 days
Apr 17, 4:47 PM CDT	Severe Thunderstorm Warning	LSX	Moniteau	43 min
Apr 17, 5:21 PM CDT	Tornado Warning	LSX	Boone, Moniteau	24 min
Apr 17, 5:24 PM CDT	Tornado Warning	LSX	Audrain, Monroe	36 min
Apr 17, 5:43 PM CDT	Severe Thunderstorm Warning	LSX	Boone, Moniteau	47 min
Apr 17, 5:55 PM CDT	Tornado Warning	LSX	Audrain, Monroe	35 min
Apr 17, 6:12 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Boone, Callaway	48 min
Apr 17, 6:15 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Boone	45 min
Apr 17, 6:24 PM CDT	Severe Thunderstorm Warning	LSX	Lewis, Marion	66 min
Apr 17, 6:42 PM CDT	Tornado Warning	LSX	Lewis, Marion	48 min
Apr 17, 6:55 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Boone, Monroe	50 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2013 Every severe thunderstorm warning in 2013

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.