Alert archive / Missouri / Special Weather Statements in 2015

Special Weather Statement, NWS St. Louis, MO

August 2, 2015Audrain County, Monroe County, Missouri

NWS St. Louis, MO issued this special weather statement at Aug 2, 2015, 9:39 PM CDT for Audrain County, Monroe County, Missouri. It was in force for 51 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
Aug 2, 2015, 9:39 PM CDT (02:39 UTC)
Expired
Aug 2, 2015, 10:30 PM CDT
In force
51 min
Issued by
NWS St. Louis, MO

Counties Audrain County, MO, Monroe County, MO

The radar

The St Louis radar (KLSX), 136 km from the middle of the area, began a volume at 02:40 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

Davenport, (KDVN), launched 00:00Z, 2.7 hours before the alert went out and 278 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, Davenport, at 00:00Z on 2015-08-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3927 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Davenport, at 00:00Z on 2015-08-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 167 square meters per square second.193958Sfc1 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
3927 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
1284 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
167 m²/s²
0-3 km storm-relative helicity
181 m²/s²
Significant tornado parameter
1.9
Supercell composite
16.8

Open this sounding in Storm Lab

The text

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

379 
WWUS83 KLSX 030239
SPSLSX

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
939 PM CDT SUN AUG 2 2015
 
MOZ026-034-035-041-042-030330-
MONROE MO-AUDRAIN MO-SHELBY MO-RALLS MO-BOONE MO-
939 PM CDT SUN AUG 2 2015

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN RALLS...MONROE...
AUDRAIN...SOUTHERN SHELBY AND NORTHERN BOONE COUNTIES UNTIL 1030 PM
CDT...

AT 939 PM CDT...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM NEAR SHELBINA TO 7 MILES
WEST OF WOODLAWN TO 7 MILES NORTHWEST OF HUNTSVILLE...AND MOVING
SOUTHEAST AT 50 MPH.

WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
MEXICO...CENTRALIA...MONROE CITY...SHELBINA...PARIS...SANTA FE...
HALLSVILLE...STURGEON...PERRY...MADISON...LADDONIA...FARBER...
MARTINSBURG...GRANVILLE...WOODLAWN...MAUD...HARRISBURG...HUNNEWELL...
RUSH HILL AND HOLLIDAY.

THIS WARNING ALSO INCLUDES ... 
FINGER LAKES STATE PARK...UNION COVERED BRIDGE HISTORIC SITE...AND
MARK TWAIN LAKE RECREATIONAL AREA.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
OFFICE IN ST LOUIS .

&&

LAT...LON 3924 9243 3925 9231 3968 9229 3977 9208
      3976 9185 3966 9184 3966 9160 3936 9153
      3915 9161 3915 9163 3907 9164 3905 9254
TIME...MOT...LOC 0239Z 317DEG 43KT 3970 9211 3960 9235 3950 9267 

$$

GOSSELIN

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 2, 8:54 PM CDTSpecial Weather StatementLSXKnox36 min
Aug 2, 9:18 PM CDTSpecial Weather StatementLSXShelby27 min

Nearby

Special Weather Statements in Missouri, 2015Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.