Alert archive / Missouri / Special Weather Statements in 2011

Special Weather Statement, NWS Springfield, MO

October 17, 2011Barton County, Missouri; Crawford County, Kansas

NWS Springfield, MO issued this special weather statement at Oct 17, 2011, 7:55 PM CDT for Barton County, Missouri; Crawford County, Kansas. It was in force for 65 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: Oct 17, 2011, 7:55 PM CDT (00:55 UTC)
Expired: Oct 17, 2011, 9:00 PM CDT
In force: 65 min
Issued by: NWS Springfield, MO

Counties Crawford County, KS, Barton County, MO

The radar

The Springfield radar (KSGF), 98 km from the middle of the area, began a volume at 00:57 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, 0.9 hours before the alert went out and 88 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1614 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 328 m²/s²
0-3 km storm-relative helicity: 542 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.8

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 Springfield, MO wrote its last area forecast discussion before this special weather statement went out at Oct 17, 5:52 PM CDT, 2 hours 3 minutes earlier.

Area forecast discussion, Oct 17, 5:52 PM CDT, 2 hours 3 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SPRINGFIELD MO
552 PM CDT MON OCT 17 2011

...UPDATE TO AVIATION...

.DISCUSSION...

CURRENTLY...SCATTERED CONVECTION CONTINUES TO DEVELOP FROM
NORTHEASTERN KANSAS ACROSS NORTHERN MISSOURI AND ALONG THE LOWER
MISSOURI RIVER VALLEY. THIS DEVELOPMENT IS ASSOCIATED WITH AN
UPPER LEVEL SHORTWAVE TROUGH AND ASSOCIATED 500MB VORTICITY
MAXIMUM. CLOUD COVER WILL CONTINUE TO BUILD ACROSS THE FORECAST
AREA TODAY AHEAD OF THE ADVANCING UPPER LEVEL LOW. CURRENT IR
SATELLITE IMAGERY REVEALS A FAIRLY DECENT SHIELD OF MID TO HIGH
ALTO-CU SPREAD FROM THE COLORADO FRONT RANGE TO THE MID-
MISSISSIPPI RIVER VALLEY. SHOWER AND ISOLATED THUNDERSTORM
DEVELOPMENT ALONG AND AHEAD OF THE ASSOCIATED COLD FRONT WITH THIS
SYSTEM WILL POSE THE MAIN FORECAST CONCERN IN THE SHORT TERM...AND
BRING A MUCH NEEDED DOSE OF PRECIP TO THE REGION.

12Z SHORT TERM GUIDANCE CONTINUES TO SHOW CONSIDERABLE AGREEMENT
WITH THE TRACK AND POSITION OF THE SHORTWAVE TROUGH THROUGH THE
AFTERNOON AND EVENING. ONLY MADE MINOR CHANGES FROM THE PREVIOUS
FORECAST GIVEN THE DECENT CONSISTENCY BETWEEN THE PREVIOUS MODEL
SOLUTIONS. THE FRONT SHOULD BEGIN TO NUDGE INTO FAR SOUTHEASTERN
KANSAS AND SOUTHWESTERN MISSOURI AROUND 00Z. DEW POINTS CONTINUE
TO SURGE SLIGHTLY INTO THE UPPER 50S ACROSS FAR SOUTHWESTERN
MISSOURI AND SOUTHEASTERN KANSAS THIS AFTERNOON MAINLY ALONG A
DECENT CONVERGENCE LINE ASSOCIATED WITH THE STATIONARY FRONT
LOCATED JUST SOUTH OF THE MISSOURI/ARKANSAS BORDER. SHORT TERM
GUIDANCE SHOWS SOME INSTABILITY WILL BE AVAILABLE ACROSS PORTIONS
OF SOUTHWESTERN MISSOURI TO SUPPORT ELEVATED THUNDERSTORMS WHERE
STORMS LOOK TO DEVELOP ALONG A DECENT RIDGE OF THETA E ADVECTION
AND ISENTROPIC LIFT. 18Z RUC ANALYSIS OF MIXED LAYER CAPE SHOWS A
NARROW AXIS OF 400 J/KG NUDGING INTO FAR SOUTHWESTERN MISSOURI.
LIGHTING WILL BE THE MAIN RISK WITH THESE STORMS WITH LITTLE TO NO
SEVERE WEATHER EXPECTED. AS A WHOLE...THIS SYSTEM WILL BRING A
MUCH NEEDED SHOT OF PRECIP TO THE REGION...WITH RAINFALL TOTALS OF
UP TO AN INCH TO AN INCH AND A QUARTER TO LOCATIONS ACROSS THE
FORECAST AREA.

FOR TUESDAY AND BEYOND...THE COLD FRONT SHOULD MOVE OUT OF THE
EASTERN OZARKS THROUGH THE MORNING HOURS WITH RAIN ENDING FROM
WEST TO EAST OVERNIGHT. BEHIND THE FRONT MUCH COOLER WEATHER WILL
BE ON TAP AS A DEEPENING TROUGH DEVELOPS ACROSS THE EASTERN U.S.
ALLOWING A COOL CANADIAN AIRMASS TO FUNNEL INTO THE OZARKS THROUGH
THE END OF THE WEEK AS HIGH PRESSURE BUILDS IN. HIGHS TUESDAY
THROUGH THURSDAY WILL BE IN THE 50S...WITH WEDNESDAY BEING THE
COLDEST...WHERE HIGHS WILL ONLY REACH THE UPPER 40S ACROSS THE
EASTERN OZARKS TO THE LOWER 50S ACROSS THE WESTERN PORTIONS OF THE
FORECAST AREA. OVERNIGHT LOWS WILL DIP DOWN TO NEAR OR JUST BELOW
FREEZING NEARLY EVERY NIGHT THROUGH FRIDAY. NEEDLESS TO SAY...THIS
WILL BRING US SEVERAL OPPORTUNITIES FOR FROST IN THE EARLY MORNING
HOURS TO A LIGHT FREEZE COME THURSDAY WHEN EARLY MORNING LOWS
COULD DROP JUST BELOW FREEZING.

BY FRIDAY THE SYNOPTIC PATTERN BEGINS TO FLATTEN OUT WITH A NEARLY
ZONAL FLOW PATTERN ACROSS THE CENTRAL U.S. THIS WILL ALLOW
TEMPERATURES TO SLOWLY CREEP BACK UP TO NEAR NORMAL. THE WEEKEND
SHOULD STAY RELATIVELY DRY...WITH ONLY A SLIGHT CHANCE OF PRECIP
SUNDAY INTO MONDAY AS ANOTHER SHORTWAVE LOOKS TO MAKE ITS WAY THROUGH
THE MIDWEST.

KURTZ

&&

.AVIATION...

FOR THE 00Z TAFS...UPPER LEVEL WAVE DIVING SOUTH INTO THE TEXAS
PANHANDLE WILL HELP TO SPARK CONVECTION ACROSS THE SOUTHERN PLAINS
INTO SOUTHEAST KANSAS AND WESTERN MISSOURI THIS EVENING. LOW
PRESSURE DEVELOPING AT THE SURFACE WILL THEN TRACK NORTHEAST ALONG
THE FRONTAL BOUNDARY BRINGING SHOWERS AND ISOLATED THUNDERSTORMS
TO THE TAF SITES DURING THE LATE EVENING AND OVERNIGHT HOURS.
CLEARING WILL TAKE PLACE ON TUESDAY WITH STRONG COLD AIR ADVECTION
AND GUSTY NORTHERLY SURFACE WINDS EXPECTED.

LINDENBERG

&&

.SGF WATCHES/WARNINGS/ADVISORIES...
MO...NONE.
KS...NONE.
&&

Hazardous weather outlook, Oct 17, 12:55 PM CDT, 7 hours before

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In the hours before

Special weather statement, Oct 17, 7:55 PM CDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
755 PM CDT MON OCT 17 2011

KSZ097-MOZ066-077-180200-
CRAWFORD KS-BARTON MO-VERNON MO-
755 PM CDT MON OCT 17 2011

...SIGNIFICANT WEATHER ADVISORY FOR BARTON...SOUTHEASTERN CRAWFORD
AND SOUTHERN VERNON COUNTIES UNTIL 900 PM CDT...

AT 752 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR LONE OAK...OR 4 MILES NORTHWEST OF
PITTSBURG...MOVING NORTHEAST AT 30 MPH. PENNY SIZE HAIL...AND WINDS
AROUND 50 MPH ARE EXPECTED WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE ARMA...BEULAH...BOSTON...BURGESS...
CHICOPEE...CROWEBURG...FRANKLIN...FRONTENAC...GIRARD...HANNON...
IANTHA...IRWIN...KENOMA...LAMAR HEIGHTS...LAMAR...LIBERAL...LONE
OAK...MILFORD...MILO...MINDENMINES...MULBERRY...NASHVILLE...OAKTON...
PITTSBURG...POLK...RINGO...SHELDON...VERDELLA AND YALE.

PEOPLE IN BARTON...SOUTHEASTERN CRAWFORD AND SOUTHERN VERNON
COUNTIES...INCLUDING PITTSBURG...FRONTENAC...ARMA...MINDENMINES...
MULBERRY...LIBERAL...VERDELLA AND SHELDON...SHOULD MONITOR THE
WEATHER SITUATION CLOSELY. LISTEN FOR POSSIBLE WARNINGS AND BE
PREPARED TO TAKE APPROPRIATE ACTION SHOULD SEVERE WEATHER THREATEN.

LAT...LON 3786 9413 3745 9407 3741 9409 3736 9455
      3737 9462 3735 9462 3733 9476 3734 9479
      3749 9489
TIME...MOT...LOC 0056Z 244DEG 28KT 3746 9472

LINDENBERG

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 17, 9:06 PM CDT	Special Weather Statement	SGF	Dade	54 min
Oct 17, 9:45 PM CDT	Special Weather Statement	SGF	Newton	60 min
Oct 18, 3:52 PM CDT	Freeze Watch	SGF	Barry, Barton, Benton, Camden, Cedar, Christian and 28 more	12 hr

Nearby

Special Weather Statements in Missouri, 2011 Special Weather Statements in Kansas, 2011 Every 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.