Alert archive / Missouri / Special Weather Statements in 2012

Special Weather Statement, NWS Kansas City, MO

July 26, 2012Cass County, Missouri

NWS Kansas City, MO issued this special weather statement at Jul 26, 2012, 12:59 AM CDT for Cass County, Missouri. It was in force for 31 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
Jul 26, 2012, 12:59 AM CDT (05:59 UTC)
Expired
Jul 26, 2012, 1:30 AM CDT
In force
31 min
Issued by
NWS Kansas City, MO

County Cass County, MO

The radar

The Pleasant Hill radar (KEAX), 17 km from the middle of the area, began a volume at 06:02 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 00:00Z, 6.0 hours before the alert went out and 130 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, Topeka, KS at 00:00Z on 2012-07-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 993 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, Topeka, KS at 00:00Z on 2012-07-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 20 square meters per square second.1939Sfc1 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
993 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
3081 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
20 m²/s²
0-3 km storm-relative helicity
109 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.

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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 Jul 25, 11:55 PM CDT, 1 hour 4 minutes earlier.

Area forecast discussion, Jul 25, 11:55 PM CDT, 1 hour 4 minutes before
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Hazardous weather outlook, Jul 25, 7:04 PM CDT, 5 hours 55 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
704 PM CDT WED JUL 25 2012

KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040-
043>046-053-054-261130-
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-
704 PM CDT WED JUL 25 2012

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

.DAY ONE...TONIGHT

ISOLATED THUNDERSTORMS WILL CONTINUE OVER EXTREME EAST CENTRAL
KANSAS AND FAR WEST CENTRAL MISSOURI UNTIL AROUND SUNSET. STRONG
DOWNBURST-TYPE WINDS UP TO 50 MPH ARE POSSIBLE WHEN THESE STORMS
COLLAPSE. ADDITIONAL SCATTERED THUNDERSTORM ACTIVITY TIED TO AN
APPROACHING COLD FRONT WILL AFFECT NORTHERN MISSOURI THIS EVENING. A
FEW OF THESE STORMS COULD BECOME SEVERE AND PRODUCE DAMAGING STRAIGHT
LINE WINDS. THE SCATTERED THUNDERSTORMS WILL CONTINUE PRESSING
SOUTHEAST OVERNIGHT BUT LIKELY WEAKEN AS THEY REACH THE MISSOURI
RIVER BY SUNRISE.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

A FEW THUNDERSTORMS MAY BE ONGOING SOUTH OF THE MISSOURI RIVER EARLY
THURSDAY MORNING. THIS ACTIVITY WILL EXIT THE REGION BY EARLY
AFTERNOON AND SEVERE WEATHER IS NOT EXPECTED.

TEMPERATURES MAY AGAIN APPROACH 100 DEGREES BY EARLY NEXT WEEK...
ESPECIALLY SOUTH OF THE MISSOURI RIVER. AT THE PRESENT TIME...
HUMIDITY VALUES SHOULD REMAIN LOW AND ADVISORIES ARE NOT PRESENTLY
ANTICIPATED.

.SPOTTER INFORMATION STATEMENT...

WITH ISOLATED TO WIDELY SCATTERED NATURE OF THUNDERSTORMS THIS
EVENING...SPOTTER ACTIVATION IS PRESENTLY NOT ANTICIPATED BUT
REPORTS OF HIGH WIND GUSTS WOULD BE APPRECIATED.

MJ

In the hours before

Special weather statement, Jul 25, 8:57 PM CDT, 4 hours 2 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
857 PM CDT WED JUL 25 2012

KSZ102-MOZ011-260230-
DONIPHAN KS-HOLT MO-
857 PM CDT WED JUL 25 2012

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN HOLT AND
NORTHWESTERN DONIPHAN COUNTIES UNTIL 930 PM CDT...

AT 851 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR ROBINSON...OR NEAR HIGHLAND...MOVING EAST AT
25 MPH.

WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH
HEAVY RAIN.

LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...
  HIGHLAND...IOWA POINT AND FANNING.

THIS STORM MAY INTENSIFY...SO 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 3989 9534 3993 9534 3996 9510 3981 9505
      3977 9534 3988 9535
TIME...MOT...LOC 0156Z 260DEG 20KT 3986 9532

MJ
Special weather statement, Jul 25, 9:24 PM CDT, 3 hours 35 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
924 PM CDT WED JUL 25 2012

MOZ011-260315-
HOLT MO-
924 PM CDT WED JUL 25 2012

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN HOLT COUNTY UNTIL 1015
PM CDT...

AT 923 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM CRAIG TO FALLS CITY
TO 6 MILES NORTH OF MORRILL...AND MOVING EAST AT 20 MPH.

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...
  MOUND CITY...CRAIG...BIG LAKE...BIGELOW AND FORTESCUE.

THIS WILL IMPACT

 I-29 BETWEEN MILE MARKERS 81 AND 99.

THESE STORMS MAY INTENSIFY...SO 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 4026 9548 4026 9545 4025 9507 4024 9506
      4023 9506 4009 9520 4001 9532 4003 9535
      4002 9539 4004 9542 4006 9542 4007 9540
      4012 9540 4018 9548 4023 9547 4025 9551
TIME...MOT...LOC 0224Z 273DEG 19KT 4023 9543 4011 9559
          4002 9571

MJ
Special weather statement, Jul 25, 10:11 PM CDT, 2 hours 48 minutes before
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Local storm report, Jul 25, 11:05 PM CDT, 1 hour 54 minutes before
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Special weather statement, Jul 26, 12:59 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
Jul 25, 9:24 PM CDTSpecial Weather StatementEAXHolt51 min
Jul 25, 9:45 PM CDTSevere Thunderstorm WarningEAXHolt, Nodaway35 min
Jul 25, 10:11 PM CDTSpecial Weather StatementEAXGentry49 min
Jul 25, 10:19 PM CDTSevere Thunderstorm WarningEAXDaviess, Gentry, Harrison41 min
Jul 25, 8:57 PM CDTSpecial Weather StatementEAXDoniphan33 min

Nearby

Special Weather Statements in Missouri, 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.