Alert archive / Missouri / Special Weather Statements in 2012

Special Weather Statement, NWS Kansas City, MO

April 15, 2012Bates County, Missouri; Linn County, Kansas

NWS Kansas City, MO issued this special weather statement at Apr 15, 2012, 5:35 AM CDT for Bates County, Missouri; Linn County, Kansas. It was in force for 40 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
Apr 15, 2012, 5:35 AM CDT (10:35 UTC)
Expired
Apr 15, 2012, 6:15 AM CDT
In force
40 min
Issued by
NWS Kansas City, MO

Counties Linn County, KS, Bates County, MO

The radar

The Pleasant Hill radar (KEAX), 80 km from the middle of the area, began a volume at 10:38 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

Springfield, MO (KSGF), launched 00:00Z, 10.6 hours before the alert went out and 143 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, Springfield, MO at 00:00Z on 2012-04-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 532 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 00:00Z on 2012-04-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 294 square meters per square second.19395878Sfc1 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
532 J/kg
Mixed-layer CIN
-182 J/kg
Mixed-layer LCL
1275 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
294 m²/s²
0-3 km storm-relative helicity
443 m²/s²
Significant tornado parameter
0.1
Supercell composite
3.5

Open this sounding in Storm Lab

The text

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

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What forecasters said that day

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

NWS Kansas City, MO wrote its last area forecast discussion before this special weather statement went out at Apr 15, 4:33 AM CDT, 1 hour 2 minutes earlier.

Area forecast discussion, Apr 15, 4:33 AM CDT, 1 hour 2 minutes before
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Hazardous weather outlook, Apr 15, 5:15 AM CDT, 20 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
515 AM CDT SUN APR 15 2012

KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040-
043>046-053-054-161015-
ATCHISON KS-MIAMI-LINN KS-DONIPHAN-LEAVENWORTH-WYANDOTTE-JOHNSON KS-
ATCHISON MO-NODAWAY-WORTH-GENTRY-HARRISON-MERCER-PUTNAM-SCHUYLER-
HOLT-ANDREW-DE KALB-DAVIESS-GRUNDY-SULLIVAN-ADAIR-BUCHANAN-CLINTON-
CALDWELL-LIVINGSTON-LINN MO-MACON-PLATTE-CLAY-RAY-CARROLL-CHARITON-
RANDOLPH-JACKSON-LAFAYETTE-SALINE-HOWARD-CASS-JOHNSON MO-PETTIS-
COOPER-BATES-HENRY-
515 AM CDT SUN APR 15 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST...NORTH CENTRAL AND
WEST CENTRAL MISSOURI...AS WELL AS EXTREME EASTERN KANSAS.

.DAY ONE...TODAY AND TONIGHT

THE LINE OF THUNDERSTORMS STRETCHING FROM CENTRAL OKLAHOMA TO EXTREME
NORTHWEST MISSOURI THIS MORNING WILL CONTINUE TO TRACK EASTWARD
THROUGH THE OUTLOOK AREA TODAY AHEAD OF AN ADVANCING COLD FRONT. AS
THIS LINE MOVES INTO EASTERN KANSAS AND WESTERN MISSOURI...THE MAIN
THREATS WILL BE STRONG GUSTY WINDS AND POSSIBLY LARGE HAIL. THIS
LINE WILL LIKELY WEAKEN THIS MORNING AS IT MOVES THROUGH WESTERN
MISSOURI...HOWEVER IS EXPECTED TO INCREASE IN INTENSITY BY THIS
AFTERNOON AS THE LINE PUSHES INTO CENTRAL AND NORTHEASTERN MISSOURI.
STRONG TO SEVERE THUNDERSTORMS ARE POSSIBLE WITH THIS AFTERNOON
REDEVELOPMENT...WITH THE MAIN THREATS BEING DAMAGING WINDS...LARGE
HAIL AND POSSIBLY ISOLATED TORNADOES. THIS THREAT WILL DIMINISH BY
THIS EVENING AS THE COLD FRONT PASSES EAST OF THE OUTLOOK AREA.

ADDITIONALLY...VERY STRONG AND GUSTY SOUTHERLY WINDS WILL SPREAD
ACROSS THE ENTIRE OUTLOOK AREA TODAY AS THE LOW LEVEL JET INCREASES
OVER THE REGION. SUSTAINED WIND SPEEDS OF 25 TO 30 MPH ARE EXPECTED WITH
GUSTS UPWARDS OF 40 TO 45 MPH FROM MID-MORNING THROUGH EARLY THIS
EVENING.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON IN AREAS ALONG AND
EAST OF INTERSTATE 35.

ACH

In the hours before

Special weather statement, Apr 15, 2:49 AM CDT, 2 hours 46 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
249 AM CDT SUN APR 15 2012

KSZ025-102-MOZ001-002-011-012-020-150830-
ANDREW MO-ATCHISON MO-ATCHISON KS-BUCHANAN MO-DONIPHAN KS-HOLT
MO-NODAWAY MO-
249 AM CDT SUN APR 15 2012

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN ATCHISON...WESTERN
ANDREW...WESTERN NODAWAY...HOLT...NORTHERN BUCHANAN...DONIPHAN AND
NORTHWESTERN ATCHISON COUNTIES UNTIL 330 AM CDT...

AT 245 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM FALLS CITY TO
WHITING...AND MOVING NORTHEAST AT 45 MPH.

HAIL UP TO THE SIZE OF NICKELS AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THESE STORMS...ALONG WITH HEAVY RAIN AND FREQUENT
DANGEROUS LIGHTNING.

LOCATIONS NEAR THE PATH OF THESE STORMS INCLUDE...
  HIGHLAND...MOUND CITY...TROY...WATHENA...MARYVILLE...SAVANNAH...
  COUNTRY CLUB VILLA...LANCASTER...CRAIG...WHITE CLOUD...DENTON...
  FOREST CITY...OREGON...SKIDMORE...MAITLAND...FILLMORE...AMAZONIA...
  BURLINGTON JUNCTION...HOPKINS AND HURON.

THIS WILL IMPACT THE FOLLOWING INTERSTATES...

  I-29 BETWEEN MILE MARKERS 54 AND 100.
  I-229 BETWEEN MILE MARKERS 7 AND 14.

THESE STORMS MAY INTENSIFY....AND A TORNADO WATCH IS IN EFFECT FOR
THIS AREA. BE CERTAIN TO MONITOR LOCAL RADIO AND TV STATIONS...AS
WELL AS LOCAL CABLE TV OUTLETS....FOR ADDITIONAL INFORMATION AND
POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

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 3980 9481 3943 9557 3966 9556 3966 9534
      4000 9534 4001 9532 4000 9531 4004 9542
      4012 9540 4019 9549 4024 9548 4026 9554
      4058 9481
TIME...MOT...LOC 0749Z 237DEG 41KT 4010 9552 3963 9550

CUTTER
Special weather statement, Apr 15, 3:32 AM CDT, 2 hours 3 minutes before
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Special weather statement, Apr 15, 4:00 AM CDT, 1 hour 35 minutes before
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Special weather statement, Apr 15, 5:33 AM CDT, 2 minutes before
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Special weather statement, Apr 15, 5:35 AM CDT, 0 minutes before
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The office that day

Everything else NWS Kansas City, MO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 15, 2:49 AM CDTSpecial Weather StatementEAXHolt, Nodaway41 min
Apr 15, 2:55 AM CDTRiver Flood WarningEAXAtchison, Holt16 hr
Apr 15, 2:59 AM CDTRiver Flood WarningEAXAndrew, Nodaway16 hr
Apr 15, 3:32 AM CDTSpecial Weather StatementEAXAndrew, Gentry, Nodaway, Worth43 min
Apr 15, 4:00 AM CDTSpecial Weather StatementEAXBuchanan, Clinton, DeKalb, Platte45 min
Apr 15, 4:17 AM CDTWind AdvisoryEAXAdair, Andrew, Atchison, Bates, Buchanan, Caldwell and 31 more16 hr
Apr 15, 5:33 AM CDTSpecial Weather StatementEAXDaviess, Grundy, Harrison, Mercer42 min
Apr 15, 5:47 AM CDTSpecial Weather StatementEAXBuchanan, Clinton, DeKalb28 min
Apr 15, 6:16 AM CDTSpecial Weather StatementEAXDaviess, DeKalb, Harrison29 min
Apr 15, 6:52 AM CDTSpecial Weather StatementEAXDaviess23 min
Apr 15, 7:20 AM CDTRiver Flood WarningEAXAndrew, Buchanan38 hr
Apr 15, 7:20 AM CDTRiver Flood WarningEAXAndrew, Holt, Nodaway12 hr
Apr 15, 1:04 PM CDTSevere Thunderstorm WarningEAXHenry, Johnson, Pettis41 min
Apr 15, 1:13 PM CDTSpecial Weather StatementEAXCooper, Howard32 min
Apr 15, 2:11 PM CDTSpecial Weather StatementEAXMacon34 min
Apr 15, 3:26 PM CDTRiver Flood WarningEAXAndrew, Buchanan30 hr
Apr 15, 3:26 PM CDTRiver Flood WarningEAXBuchanan51 hr
Apr 15, 4:37 PM CDTSpecial Weather StatementEAXCooper8 min

Nearby

Special Weather Statements in Missouri, 2012Special Weather Statements in Kansas, 2012Every special weather statement in 2012

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.