Alert archive / Missouri / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 19, NWS St. Louis, MO

April 7, 20154 counties in Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Apr 7, 2015, 8:42 AM CDT for 4 counties in Missouri. It was in force for 48 min. 18 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 7, 2015, 8:42 AM CDT (13:42 UTC)
Expired: Apr 7, 2015, 9:30 AM CDT
In force: 48 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Hail: 1.75 in
Wind: 50.0 mph

Counties Franklin County, MO, Jefferson County, MO, Saint Charles County, MO, Saint Louis County, MO

The radar

The St Louis radar (KLSX), 9 km from the middle of the area, began a volume at 13:44 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 7, 8:52 AM CDT	HAIL 0.75	Augusta, MO	HAIL WAS BETWEEN AUGUSTA AND DEFIANCE.
Apr 7, 8:53 AM CDT	HAIL 0.5	2 Sw Lake St. Louis, MO	PARKGATE DRIVE.
Apr 7, 9:00 AM CDT	TSTM WND DMG	6 E Augusta, MO	2-INCH OR BIGGER TREE LIMBS AND BRANCHES BLOWN DOWN.
Apr 7, 9:00 AM CDT	HAIL 1	Wildwood, MO
Apr 7, 9:00 AM CDT	HAIL 1.75	2 E Augusta, MO	HAIL SIZE RANGED FROM PEA TO GOLFBALL.
Apr 7, 9:02 AM CDT	HAIL 1.25	6 E Augusta, MO
Apr 7, 9:07 AM CDT	HAIL 1	5 W Weldon Spring, MO	QUARTER-SIZE HAIL BETWEEN BUSCH WILDLIFE MAIN OFFICE AND FRANCIS HOWELL HIGH SCHOOL ALONG HIGHWAY D.
Apr 7, 9:10 AM CDT	HAIL 1.75	Wildwood, MO	WINDOW SIDING DAMAGE.
Apr 7, 9:20 AM CDT	HAIL 1.25	Wildwood, MO	TWITTER REPORT
Apr 7, 9:21 AM CDT	HAIL 0.7	Chesterfield, MO	HAIL SIZE RANGED FROM PEA TO DIME.
Apr 7, 9:25 AM CDT	HAIL 0.7	Ballwin, MO
Apr 7, 9:28 AM CDT	HAIL 1	Chesterfield, MO	HAIL SIZE RANGED FROM DIME-SIZE TO QUARTER-SIZE IN CHESTERFIELD.
Apr 7, 9:29 AM CDT	HAIL 1	Ballwin, MO
Apr 7, 9:30 AM CDT	HAIL 0.88	Town And Country, MO
Apr 7, 9:30 AM CDT	HAIL 1	Chesterfield, MO
Apr 7, 9:31 AM CDT	HAIL 1	Ballwin, MO
Apr 7, 9:32 AM CDT	HAIL 0.88	Chesterfield, MO
Apr 7, 9:40 AM CDT	HAIL 0.5	Valley Park, MO

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

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 10 storm reports to this severe thunderstorm warning; the first came 18 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

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 7, 8:34 AM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 1.7 hours before the alert went out and 249 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: 134 J/kg
Mixed-layer CIN: -199 J/kg
Mixed-layer LCL: 443 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 23 m²/s²
0-3 km storm-relative helicity: 87 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

822 
WUUS53 KLSX 071342
SVRLSX
MOC071-099-183-189-071430-
/O.NEW.KLSX.SV.W.0019.150407T1342Z-150407T1430Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
842 AM CDT TUE APR 7 2015

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN FRANKLIN COUNTY IN EAST CENTRAL MISSOURI...
  NORTHWESTERN JEFFERSON COUNTY IN EAST CENTRAL MISSOURI...
  SOUTHWESTERN ST. CHARLES COUNTY IN EAST CENTRAL MISSOURI...
  WESTERN ST. LOUIS COUNTY IN EAST CENTRAL MISSOURI...

* UNTIL 930 AM CDT

* AT 841 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR AUGUSTA...
  AND MOVING EAST AT 35 MPH.

  HAZARD...GOLF BALL SIZE HAIL.

  SOURCE...TRAINED WEATHER SPOTTERS.

  IMPACT...PEOPLE AND ANIMALS OUTDOORS WILL BE INJURED. EXPECT DAMAGE
           TO ROOFS...SIDING...WINDOWS AND VEHICLES.

* LOCATIONS IMPACTED INCLUDE...
  GRAY SUMMIT...DARDENNE PRAIRIE...COTTLEVILLE...WELDON SPRING...
  WILDWOOD...EUREKA...CLARKSON VALLEY...CHESTERFIELD...ELLISVILLE...
  BALLWIN...MANCHESTER...MARYLAND HEIGHTS...TOWN AND COUNTRY...VALLEY
  PARK...MURPHY...DEFIANCE...HARVESTER...MATSON...PARKDALE AND
  PEERLESS PARK.

THIS WARNING INCLUDES BABLER MEMORIAL STATE PARK...CASTLEWOOD STATE
PARK AND ROUTE 66 STATE PARK.

THIS WARNING ALSO INCLUDES...
INTERSTATE 70 IN MISSOURI NEAR EXIT 231.INTERSTATE 44 FROM EXIT 257
TO EXIT 274.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. PREPARE IMMEDIATELY FOR LARGE DESTRUCTIVE
HAIL CAPABLE OF PRODUCING SIGNIFICANT DAMAGE. PEOPLE OUTSIDE SHOULD
MOVE TO A SHELTER...INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS.

&&

LAT...LON 3846 9048 3850 9096 3874 9097 3878 9096
      3877 9044
TIME...MOT...LOC 1343Z 278DEG 30KT 3863 9087

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

$$

GKS

3 follow-up statements

265 
WWUS53 KLSX 071358
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
858 AM CDT TUE APR 7 2015

MOC071-099-183-189-071430-
/O.CON.KLSX.SV.W.0019.000000T0000Z-150407T1430Z/
FRANKLIN MO-JEFFERSON MO-ST. CHARLES MO-ST. LOUIS MO-
858 AM CDT TUE APR 7 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WESTERN ST.
LOUIS...CENTRAL ST. CHARLES...EXTREME NORTHWESTERN JEFFERSON AND
NORTHEASTERN FRANKLIN COUNTIES UNTIL 930 AM CDT...

AT 855 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR DEFIANCE...AND
MOVING EAST AT 35 MPH.

HAZARD...GOLF BALL SIZE HAIL.

SOURCE...TRAINED WEATHER SPOTTERS.

IMPACT...PEOPLE AND ANIMALS OUTDOORS WILL BE INJURED. EXPECT DAMAGE
         TO ROOFS...SIDING...WINDOWS AND VEHICLES.

LOCATIONS IMPACTED INCLUDE...
COTTLEVILLE...WELDON SPRING...WILDWOOD...EUREKA...CLARKSON VALLEY...
CHESTERFIELD...ELLISVILLE...BALLWIN...MANCHESTER...MARYLAND
HEIGHTS...TOWN AND COUNTRY...VALLEY PARK...MURPHY...HARVESTER...
PARKDALE AND PEERLESS PARK.

THIS WARNING INCLUDES BABLER MEMORIAL STATE PARK...CASTLEWOOD STATE
PARK AND ROUTE 66 STATE PARK.

THIS WARNING ALSO INCLUDES...
INTERSTATE 70 IN MISSOURI FROM EXIT 229 TO EXIT 231.
INTERSTATE 44 FROM EXIT 257 TO EXIT 274.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. PREPARE IMMEDIATELY FOR LARGE DESTRUCTIVE
HAIL CAPABLE OF PRODUCING SIGNIFICANT DAMAGE. PEOPLE OUTSIDE SHOULD
MOVE TO A SHELTER...INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS.

&&

LAT...LON 3846 9048 3849 9088 3871 9087 3878 9082
      3877 9044
TIME...MOT...LOC 1358Z 278DEG 30KT 3861 9071

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

$$

GLASS

886 
WWUS53 KLSX 071410
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
910 AM CDT TUE APR 7 2015

MOC071-099-183-189-071430-
/O.CON.KLSX.SV.W.0019.000000T0000Z-150407T1430Z/
FRANKLIN MO-JEFFERSON MO-ST. CHARLES MO-ST. LOUIS MO-
910 AM CDT TUE APR 7 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
ST. LOUIS...CENTRAL ST. CHARLES...EXTREME NORTHWESTERN JEFFERSON AND
NORTHEASTERN FRANKLIN COUNTIES UNTIL 930 AM CDT...

AT 908 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR WILDWOOD...AND
MOVING EAST AT 25 MPH.

HAZARD...GOLF BALL SIZE HAIL.

SOURCE...TRAINED WEATHER SPOTTERS. NUMEROUS REPORTS OF QUARTER TO 
         GOLFBALL SIZE HAIL AROUND AUGUSTA.

IMPACT...PEOPLE AND ANIMALS OUTDOORS WILL BE INJURED. EXPECT DAMAGE
         TO ROOFS...SIDING...WINDOWS AND VEHICLES.

LOCATIONS IMPACTED INCLUDE...
EUREKA...CLARKSON VALLEY...CHESTERFIELD...ELLISVILLE...BALLWIN...
MANCHESTER...HIGH RIDGE...TOWN AND COUNTRY...VALLEY PARK...MURPHY...
MARYLAND HEIGHTS...PARKDALE AND PEERLESS PARK.

THIS WARNING INCLUDES BABLER MEMORIAL STATE PARK...CASTLEWOOD STATE
PARK AND ROUTE 66 STATE PARK.

THIS WARNING ALSO INCLUDES...
INTERSTATE 44 FROM EXIT 257 TO EXIT 274.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. PREPARE IMMEDIATELY FOR LARGE DESTRUCTIVE
HAIL CAPABLE OF PRODUCING SIGNIFICANT DAMAGE. PEOPLE OUTSIDE SHOULD
MOVE TO A SHELTER...INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS.

&&

LAT...LON 3864 9074 3872 9068 3873 9045 3846 9048
      3849 9088
TIME...MOT...LOC 1409Z 277DEG 20KT 3861 9065

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

$$

GLASS

626 
WWUS53 KLSX 071420
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
920 AM CDT TUE APR 7 2015

MOC183-071430-
/O.CAN.KLSX.SV.W.0019.000000T0000Z-150407T1430Z/
ST. CHARLES MO-
920 AM CDT TUE APR 7 2015

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL ST. CHARLES COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA.

LAT...LON 3863 9072 3868 9065 3868 9053 3872 9052
      3873 9047 3873 9045 3846 9048 3849 9088
TIME...MOT...LOC 1420Z 277DEG 20KT 3860 9057

$$

MOC071-099-189-071430-
/O.CON.KLSX.SV.W.0019.000000T0000Z-150407T1430Z/
FRANKLIN MO-JEFFERSON MO-ST. LOUIS MO-
920 AM CDT TUE APR 7 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
ST. LOUIS...EXTREME NORTHWESTERN JEFFERSON AND NORTHEASTERN FRANKLIN
COUNTIES UNTIL 930 AM CDT...

AT 917 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR ELLISVILLE...
AND MOVING EAST AT 25 MPH.

HAZARD...GOLF BALL SIZE HAIL. QUARTER SIZE HAIL WAS REPORTED 
         SOUTHWEST OF WELDON SPRING.

SOURCE...TRAINED WEATHER SPOTTERS.

IMPACT...PEOPLE AND ANIMALS OUTDOORS WILL BE INJURED. EXPECT DAMAGE
         TO ROOFS...SIDING...WINDOWS AND VEHICLES.

LOCATIONS IMPACTED INCLUDE...
BALLWIN...MANCHESTER...HIGH RIDGE...TOWN AND COUNTRY...VALLEY PARK...
MURPHY...MARYLAND HEIGHTS...PARKDALE AND PEERLESS PARK.

THIS WARNING INCLUDES BABLER MEMORIAL STATE PARK...CASTLEWOOD STATE
PARK AND ROUTE 66 STATE PARK.

THIS WARNING ALSO INCLUDES...
INTERSTATE 44 FROM EXIT 257 TO EXIT 274.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. PREPARE IMMEDIATELY FOR LARGE DESTRUCTIVE
HAIL CAPABLE OF PRODUCING SIGNIFICANT DAMAGE. PEOPLE OUTSIDE SHOULD
MOVE TO A SHELTER...INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS.

&&

LAT...LON 3863 9072 3868 9065 3868 9053 3872 9052
      3873 9047 3873 9045 3846 9048 3849 9088
TIME...MOT...LOC 1420Z 277DEG 20KT 3860 9057

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

$$

GLASS

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS St. Louis, MO wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 7, 6:49 AM CDT, 1 hour 53 minutes earlier.

Area forecast discussion, Apr 7, 6:49 AM CDT, 1 hour 53 minutes before

AREA FORECAST DISCUSSION...UPDATED AVIATION
NATIONAL WEATHER SERVICE ST LOUIS MO
649 AM CDT Tue Apr 7 2015

.SHORT TERM:  (Through Tonight)
Issued at 343 AM CDT Tue Apr 7 2015

Starting to sound like a broken record, but once again, focus will
be precip chances thru the period.

Expect precip over the ern portions of the CWA to continue moving
out of the area early this morning. Some isod SHRA, and perhaps TS,
will be possible. However, main focus is expected to be the ongoing
TSRA over wrn MO. Numerous mdl solns suggest this cluster of TSRA
will lift enewd into the area this morning and build sewd late this
morning, perhaps into the afternoon, as the LLJ veers. However, some
question remains how far E and S these storms will propagate before
dissipating as the LLJ weakens. As these storms dissipate, expect a
lull this afternoon into the evening before the next round arrives.
Some question remains as to where/when TSRA will initiate, but best
chances shud be along the sfc boundary across the nrn portions of
the CWA, tho any outflow boundaries may also help initiate storms.
Have kept PoPs for tonight in the change range due to questions in
boundary locations.

Given the amount of elevated CAPE and deep shear available, a severe
threat will exist with hail and winds as a primary threat.

Little change in temps for today and tonight with continued trends
twd warm guidance.

Tilly

.LONG TERM:  (Wednesday through Monday)
Issued at 414 AM CDT Tue Apr 7 2015

Not many changes from the prev forecast. Still a number of
questions exist with upcoming system. A severe threat still exists
on Wed during the late afternoon and overnight period. The greater
threat still exists on Thurs as the cdfnt pushes thru the region.
Mdl solns have changed slightly from yesterday. Mdls have sped up
timing of fropa slightly, with bulk of precip expected to be E of
the CWA by 06z Fri. Mdls now have upper trof remaining neutral as
it approaches the region. Still, enuf CAPE and deep shear will
exist to pose a severe threat. Please see the latest SPC day 2 and
day 3 outlooks for the latest info as local thinking agrees with
SPC.

Mdl solns differ regarding timing of the next system Sat into Sun.
Have low PoPs early to account for the GFS soln and trended twd
higher PoPs where/when mdls are in better agreement.

Otherwise, have continued warm trend thru Thurs despite the ample
cloud cover expected. Cooler, but seasonal avg, temps are expected
this weekend as a large sfc ridge settles into the area.

Tilly

&&

.AVIATION:  (For the 12z TAFs through 12z Wednesday Morning)
Issued at 632 AM CDT Tue Apr 7 2015

Busy fcst prd over the next 24 hrs. Warm front currently lifting
north thru cntrl MO and sthrn IL with a significant TSTM rolling
east along the bndry. This storm has a history of producing 1-2
inch hail and should arrive in the wrn STL metro area around 13Z.
CIGs have been sporadic with VFR and LIFR conditions from west to
east across the STL metro area. Model guidance indicates plenty of
IFR/MVFR conditions thru the fcst prd but lack of verification
compared to current obs makes the CIG fcst low confidence. Think
the general trend will be for CIGs to slowly rise today as the
warm front lifts north only to build back down tonight. Pattern is
conducive for scttrd convection just about anytime...but think the
best chances will be tied to the warm front and should be confined
to area along and north of I70.

Specifics for KSTL:

Sporadic CIGs this mrng are expected to rise as a warm front
lifts north...though the CIG fcst is low confidence due to poor
model performance compared to currently obs. A significant TSTM is
riding east along the bndry and should be near the terminal around
14Z. This storm has a history of producing 1-2 inch hail. The
overall pattern is such that SHRA/TSTMs are possible just about
anywhere at anytime but think the best chances this prd should be
tied to the warm front. With that bndry lifting north this
mrng...chances should decrease after this mrngs activity.

2%

&&

.PRELIMINARY POINT TEMPS/POPS:
Saint Louis     80  64  81  68 /  60  40  50  70
Quincy          74  60  77  62 /  60  40  60  80
Columbia        79  62  80  64 /  60  40  60  70
Jefferson City  80  63  81  65 /  50  40  60  70
Salem           77  62  79  66 /  50  40  30  70
Farmington      78  62  81  65 /  40  30  30  60

&&

.LSX WATCHES/WARNINGS/ADVISORIES:
MO...NONE.
IL...NONE.
&&

WFO LSX

Hazardous weather outlook, Apr 7, 4:13 AM CDT, 4 hours 29 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ST LOUIS MO
413 AM CDT TUE APR 7 2015

ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027-
034>036-041-042-047>052-059>065-072>075-084-085-099-081200-
GREENE IL-MACOUPIN IL-MONTGOMERY IL-BOND IL-FAYETTE IL-CLINTON IL-
MARION IL-WASHINGTON IL-RANDOLPH IL-ADAMS IL-BROWN IL-PIKE IL-
CALHOUN IL-JERSEY IL-MADISON IL-ST. CLAIR IL-MONROE IL-KNOX MO-
LEWIS MO-SHELBY MO-MARION MO-MONROE MO-RALLS MO-PIKE MO-BOONE MO-
AUDRAIN MO-MONITEAU MO-COLE MO-OSAGE MO-CALLAWAY MO-MONTGOMERY MO-
LINCOLN MO-GASCONADE MO-WARREN MO-ST. CHARLES MO-FRANKLIN MO-
ST. LOUIS MO-ST. LOUIS CITY MO-JEFFERSON MO-CRAWFORD MO-
WASHINGTON MO-ST. FRANCOIS MO-STE. GENEVIEVE MO-IRON MO-
MADISON MO-REYNOLDS MO-
413 AM CDT TUE APR 7 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EASTERN AND
CENTRAL MISSOURI AS WELL AS WEST CENTRAL AND SOUTHWEST ILLINOIS.

.DAY ONE...TODAY AND TONIGHT

THUNDERSTORMS ARE LIKELY THIS MORNING ACROSS PORTIONS OF CENTRAL
AND EASTERN MISSOURI AS WELL AS NORTH CENTRAL AND SOUTHWEST
ILLINOIS. THERE IS A CHANCE FOR THUNDERSTORMS ACROSS THE AREA TONIGHT.
A FEW OF THE STORMS MAY BECOME STRONG TO SEVERE..WITH LARGE HAIL
BEING THE PRIMARY SEVERE WEATHER THREAT.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

THUNDERSTORMS ARE LIKELY OVER MUCH OF THE AREA FROM WEDNESDAY
AFTERNOON...THURSDAY...AND INTO THURSDAY NIGHT. SOME OF THE THUNDERSTORMS
MAY BE SEVERE WEDNESDAY NIGHT...AND AGAIN ON THURSDAY AND INTO
THURSDAY NIGHT.

THE CHANCE FOR THUNDERSTORMS RETURNS SUNDAY THROUGH MONDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS ARE REQUESTED TO REPORT ANY HAIL THAT THEY OBSERVE
THROUGH TONIGHT.

TILLY

In the hours before

Local storm report, Apr 7, 8:24 AM CDT, 18 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
824 AM CDT TUE APR 07 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0821 AM     HAIL             2 S WENTZVILLE          38.78N  90.86W
04/07/2015  E0.25 INCH       ST. CHARLES        MO   TRAINED SPOTTER

            PEA-SIZED HAIL.

&&

FUCHS

Local storm report, Apr 7, 8:31 AM CDT, 11 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
831 AM CDT TUE APR 07 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0829 AM     HAIL             DUTZOW                  38.61N  90.99W
04/07/2015  E0.50 INCH       WARREN             MO   TRAINED SPOTTER

            HAIL SIZE RANGED FROM PEA TO MARBLE.

&&

DYE

Local storm report, Apr 7, 8:32 AM CDT, 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
832 AM CDT TUE APR 07 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0828 AM     HAIL             DUTZOW                  38.61N  90.99W
04/07/2015  E1.00 INCH       WARREN             MO   TRAINED SPOTTER

            HAIL SIZE RANGED FROM DIME TO QUARTER.

&&

DYE

Local storm report, Apr 7, 8:34 AM CDT, 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
834 AM CDT TUE APR 07 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0830 AM     HAIL             2 NNW MARTHASVILLE      38.66N  91.07W
04/07/2015  E1.00 INCH       WARREN             MO   TRAINED SPOTTER

&&

FUCHS

Local storm report, Apr 7, 8:40 AM CDT, 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
840 AM CDT TUE APR 07 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0838 AM     HAIL             EUREKA                  38.50N  90.64W
04/07/2015  E0.70 INCH       ST. LOUIS          MO   TRAINED SPOTTER

            HAIL SIZE RANGED FROM PEA TO DIME.

&&

DYE

Local storm report, Apr 7, 8:41 AM CDT, 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
841 AM CDT TUE APR 07 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0838 AM     HAIL             DUTZOW                  38.61N  90.99W
04/07/2015  E1.75 INCH       WARREN             MO   TRAINED SPOTTER

&&

DYE

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 7, 4:59 AM CDT	Severe Thunderstorm Warning	LSX	Boone	46 min
Apr 7, 5:34 AM CDT	Severe Thunderstorm Warning	LSX	Audrain, Callaway	56 min
Apr 7, 6:23 AM CDT	Severe Thunderstorm Warning	LSX	Callaway, Montgomery	67 min
Apr 7, 7:06 AM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Montgomery, Warren	54 min
Apr 7, 7:56 AM CDT	Severe Thunderstorm Warning	LSX	Franklin, Saint Charles, Saint Louis, Warren	49 min
Apr 7, 9:18 AM CDT	Severe Thunderstorm Warning	LSX	Franklin, Jefferson	42 min
Apr 7, 9:26 AM CDT	Severe Thunderstorm Warning	LSX	Jefferson, Saint Louis, City of Saint Louis	49 min
Apr 7, 9:42 AM CDT	Flash Flood Warning	LSX	Franklin, Jefferson, Saint Charles, Saint Louis, Warren	8 hr
Apr 7, 9:58 AM CDT	Severe Thunderstorm Warning	LSX	Franklin, Jefferson	47 min
Apr 7, 10:03 AM CDT	Severe Thunderstorm Warning	LSX	Saint Louis, City of Saint Louis	42 min
Apr 7, 10:43 AM CDT	Areal Flood Advisory	LSX	Saint Louis, City of Saint Louis	4 hr
Apr 7, 10:53 AM CDT	Flash Flood Warning	LSX	Crawford, Franklin, Jefferson, Washington	4 hr
Apr 7, 12:42 PM CDT	River Flood Warning	LSX	Saint Charles	35 hr
Apr 7, 12:47 PM CDT	Flash Flood Warning	LSX	Jefferson, Sainte Genevieve, Saint Francois, Washington	6 hr

Nearby

Severe Thunderstorm Warnings in Missouri, 2015 Every severe thunderstorm warning in 2015

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.