Alert archive / Kansas / Special Weather Statements in 2021

Special Weather Statement, NWS Wichita, KS

March 12, 2021Greenwood County, Kansas

NWS Wichita, KS issued this special weather statement at Mar 12, 2021, 7:14 AM CST for Greenwood County, Kansas. It was in force for 46 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
Mar 12, 2021, 7:14 AM CST (13:14 UTC)
Expired
Mar 12, 2021, 8:00 AM CST
In force
46 min
Issued by
NWS Wichita, KS

County Greenwood County, KS

The radar

The Wichita radar (KICT), 101 km from the middle of the area, began a volume at 13:17 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, 1.2 hours before the alert went out and 138 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 12:00Z on 2021-03-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 2021-03-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 77 square meters per square second.1939587897117136Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1908 m above ground
0-6 km bulk shear
84 kt
0-1 km storm-relative helicity
77 m²/s²
0-3 km storm-relative helicity
236 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

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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 Wichita, KS wrote its last area forecast discussion before this special weather statement went out at Mar 12, 5:40 AM CST, 1 hour 34 minutes earlier.

Area forecast discussion, Mar 12, 5:40 AM CST, 1 hour 34 minutes before
Area Forecast Discussion
National Weather Service Wichita KS
540 AM CST Fri Mar 12 2021

.SHORT TERM...(Today through Sunday night)
Issued at 302 AM CST Fri Mar 12 2021

Models show increasing low level moisture transport early this
morning which should generate scattered to numerous rain showers
with some embedded storms today. A few strong storms with hail up to
nickel size will be possible mainly this morning due to combination
of steeper mid-level lapse rates, strong shear, and MUCAPE values in
the 500-1000 J/kg range. Meanwhile the strong storm chances and
coverage should begin to diminish during the afternoon/evening as
moisture transport weakens.

The upper level system over the southwestern states will move very
slowly eastward from tonight and reach western Kansas by Sunday.
Additional rounds of numerous showers and storms will affect the
region from tonight through Sunday. Standardized precipitable water
anomalies will rise 3 to 4 deviations above normal which supports
higher rainfall rates, and given the longer duration of this signal
targeting central Kansas we will expand the flood watch to cover
those areas. Widespread 2 to 4 inches with locally higher rainfall
totals are likely before this system moves east of Kansas. This will
elevate the flooding risk along with rises on many creeks and rivers
across the area. Some of the creeks and rivers could experience
minor or moderate flooding.

.LONG TERM...(Monday through Thursday)
Issued at 302 AM CST Fri Mar 12 2021

Medium range models show the upper level system gradually shifting
east of Kansas on Monday with some lingering rain possible.
Otherwise longer range models show a lull in the precipitation for
Monday night-Tuesday. This could be short-lived as another healthy
weather system is forecast by GFS model to affect the region for mid-
week which could include a possible rain/snow mix over central
Kansas. ECMWF model suggests a continuation of dry weather next week
with cooler drier air overspreading Kansas. Either solution favors
daytime highs being cooler than normal for next week, as the weather
pattern keeps the warmer air south of Kansas.

&&

.AVIATION...(For the 12Z TAFS through 12Z Saturday morning)
Issued at 540 AM CST Fri Mar 12 2021

Expect deteriorating aviation conditions this morning and later
today, as scattered SHRA and some embedded TSRA move across the area
this morning, with more widespread SHRA expected later today and
tonight.  This will lead to most locations seeing MVFR cigs and even
some MVFR vsbys in and around the convection.  So will go with
SHRA/VCTS for most locations with vsbys of 3-5sm.  For this evening,
expect cigs to continue to diminish, becoming IFR for most
locations, with MVFR vsbys due to widespread SHRA expected.

Ketcham

&&

.FIRE WEATHER...
Issued at 302 AM CST Fri Mar 12 2021

Fire weather concerns will remain low across the entire region for
several days due to widespread rainfall for today through the
weekend. Cooler temperatures will be in store for next week along
with more chances of rain by mid-week.

&&

.PRELIMINARY POINT TEMPS/POPS...
Wichita-KICT    50  47  60  51 /  80 100 100  90
Hutchinson      48  44  58  48 /  80 100 100  90
Newton          48  45  56  50 /  80  90  90  90
ElDorado        49  47  59  52 /  90  90  90  80
Winfield-KWLD   54  49  63  51 /  90 100  90  80
Russell         45  39  52  44 /  70 100 100 100
Great Bend      45  41  54  44 /  80 100 100 100
Salina          48  42  56  48 /  80  80 100 100
McPherson       48  44  57  48 /  80  90 100  90
Coffeyville     56  51  66  55 /  90  90  70  50
Chanute         52  48  62  54 /  90  80  80  50
Iola            51  47  59  53 /  90  80  80  50
Parsons-KPPF    55  50  66  54 /  90  90  80  50

&&

.ICT WATCHES/WARNINGS/ADVISORIES...
Flood Watch through Sunday afternoon for KSZ032-033-047>053-
067>072-082-083-091>096-098>100.

&&

SHORT TERM...CDJ
LONG TERM...CDJ
AVIATION...Ketcham
FIRE WEATHER...CDJ
Hazardous weather outlook, Mar 12, 4:22 AM CST, 2 hours 52 minutes before
Hazardous Weather Outlook
National Weather Service Wichita KS
422 AM CST Fri Mar 12 2021

KSZ032-033-047>053-067>072-082-083-091>096-098>100-131030-
Russell-Lincoln-Barton-Ellsworth-Saline-Rice-McPherson-Marion-Chase-
Reno-Harvey-Butler-Greenwood-Woodson-Allen-Kingman-Sedgwick-Harper-
Sumner-Cowley-Elk-Wilson-Neosho-Chautauqua-Montgomery-Labette-
422 AM CST Fri Mar 12 2021

This hazardous weather outlook is for portions of Central Kansas,
South Central Kansas and Southeast Kansas.

.DAY ONE...Today and Tonight

Scattered thunderstorms are expected for today and tonight across
the region. A few strong storms could produce pea to nickel size
hail mainly during the morning and late night hours. In addition,
periods of heavy rainfall is possible tonight.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

Periods of widespread showers and thunderstorms will continue to
affect the region for Saturday and Sunday. A few strong to
marginally severe storms will be possible on Saturday with southern
Kansas having the higher chances. Widespread rainfall amounts of 1
to 3 inches is expected for this weekend, with locally higher
amounts possible. The rain could be heavy at times, especially
during the night time hours on Saturday. In addition, modest to
significant rises on area rivers and streams are likely, with some
street and low-land flooding also possible.

Another weather system could bring more rain chances to the region
for Wednesday night into Thursday morning. Colder air could change
the precipitation over to a rain snow mix.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated today or tonight.

&&

For a graphical version of this information, see our webpage at:
https://weather.gov/crh/ghwo?sid=ict

In the hours before

Local storm report, Mar 12, 6:14 AM CST, 1 hour before
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Local storm report, Mar 12, 6:34 AM CST, 40 minutes before
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Local storm report, Mar 12, 6:45 AM CST, 29 minutes before
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Special weather statement, Mar 12, 6:50 AM CST, 24 minutes before
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Special weather statement, Mar 12, 7:10 AM CST, 4 minutes before
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Special weather statement, Mar 12, 7:14 AM CST, 0 minutes before
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The office that day

Everything else NWS Wichita, KS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 12, 4:57 AM CSTSevere Thunderstorm WarningICTKingman, Reno63 min
Mar 12, 5:00 AM CSTSpecial Weather StatementICTRice45 min
Mar 12, 5:35 AM CSTSevere Thunderstorm WarningICTHarvey, Kingman, Reno, Sedgwick55 min
Mar 12, 5:48 AM CSTSpecial Weather StatementICTCowley57 min
Mar 12, 6:07 AM CSTSevere Thunderstorm WarningICTButler, Sedgwick42 min
Mar 12, 6:50 AM CSTSpecial Weather StatementICTButler55 min
Mar 12, 7:10 AM CSTSpecial Weather StatementICTElk50 min
Mar 12, 8:43 AM CSTSevere Thunderstorm WarningICTHarper28 min
Mar 12, 9:40 AM CSTSpecial Weather StatementICTHarper65 min
Mar 12, 10:12 AM CSTSpecial Weather StatementICTElk48 min
Mar 12, 10:31 AM CSTSpecial Weather StatementICTSedgwick44 min
Mar 12, 10:43 AM CSTSpecial Weather StatementICTSumner47 min
Mar 12, 10:49 AM CSTSpecial Weather StatementICTButler41 min
Mar 12, 11:11 AM CSTSpecial Weather StatementICTButler49 min
Mar 12, 11:51 AM CSTSpecial Weather StatementICTElk54 min
Mar 12, 12:08 PM CSTAreal Flood WarningICTAllen, Woodson48 hr
Mar 12, 12:39 PM CSTSpecial Weather StatementICTWilson51 min
Mar 12, 12:55 PM CSTSpecial Weather StatementICTNeosho50 min
Mar 12, 3:04 PM CSTAreal Flood WarningICTNeosho45 hr

Nearby

Special Weather Statements in Kansas, 2021Every special weather statement in 2021

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.