Alert archive / Missouri / Special Weather Statements in 2011
Special Weather Statement, NWS Kansas City, MO
NWS Kansas City, MO issued this special weather statement at May 20, 2011, 10:21 AM CDT for 4 counties in Missouri. It was in force for 39 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
- May 20, 2011, 10:21 AM CDT (15:21 UTC)
- Expired
- May 20, 2011, 11:00 AM CDT
- In force
- 39 min
- Issued by
- NWS Kansas City, MO
Counties Carroll County, MO, Lafayette County, MO, Pettis County, MO, Saline County, MO
The radar
The Pleasant Hill radar (KEAX), 73 km from the middle of the area, began a volume at 15:40 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
Topeka, KS (KTOP), launched 12:00Z, 3.4 hours before the alert went out and 193 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.
- Mixed-layer CAPE
- 246 J/kg
- Mixed-layer CIN
- -116 J/kg
- Mixed-layer LCL
- 722 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 48 m²/s²
- 0-3 km storm-relative helicity
- -55 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
148
WWUS83 KEAX 201521
SPSEAX
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1021 AM CDT FRI MAY 20 2011
MOZ031-038-039-044>046-054-201600-
CARROLL MO-COOPER MO-HENRY MO-JOHNSON MO-LAFAYETTE MO-PETTIS
MO-SALINE MO-
1021 AM CDT FRI MAY 20 2011
...SIGNIFICANT WEATHER ADVISORY FOR SALINE...PETTIS AND WESTERN
COOPER COUNTIES IN CENTRAL MISSOURI...AND SOUTHWESTERN CARROLL COUNTY
IN NORTH CENTRAL MISSOURI...AND EASTERN LAFAYETTE...EASTERN JOHNSON
AND NORTHEASTERN HENRY COUNTIES IN WEST CENTRAL MISSOURI UNTIL 1100
AM CDT...
AT 1016 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 7 MILES SOUTHEAST OF
MAYVIEW TO WHITEMAN AIR FORCE BASE TO LINCOLN...AND MOVING NORTH AT
40 MPH.
HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 40 MPH ARE
EXPECTED WITH THESE STORMS...ALONG WITH HEAVY RAIN.
LOCATIONS NEAR THE PATH OF THESE STORMS INCLUDE...
HIGGINSVILLE...CONCORDIA...SWEET SPRINGS...SEDALIA...CARROLLTON...
MARSHALL...MAYVIEW...LA MONTE...CORDER...ALMA...HOUSTONIA...
SMITHTON...BLACKBURN...OTTERVILLE...NORBORNE...WAVERLY...MALTA
BEND...AULLVILLE...EMMA AND DOVER.
THIS WILL IMPACT
I-70 BETWEEN MILE MARKERS 42 AND 91.
TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED
ROADWAY.
LAT...LON 3869 9305 3853 9307 3853 9329 3850 9329
3851 9351 3844 9351 3860 9364 3887 9395
3920 9379 3921 9376 3928 9376 3954 9363
3931 9317 3868 9281
TIME...MOT...LOC 1521Z 198DEG 34KT 3901 9374 3879 9353
3848 9332
$$
21The office that day
Everything else NWS Kansas City, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 20, 6:38 PM CDT | River Flood Warning | EAX | Johnson, Pettis | 17 hr |
| May 20, 6:58 PM CDT | River Flood Warning | EAX | Cooper | 36 hr |
Nearby
Special Weather Statements in Missouri, 2011Every special weather statement in 2011
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.