Alert archive / Kansas / Special Weather Statements in 2018

Special Weather Statement, NWS Dodge City, KS

July 17, 2018Stevens County, Kansas

NWS Dodge City, KS issued this special weather statement at Jul 17, 2018, 5:37 PM CDT for Stevens County, Kansas. It was in force for 53 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 17, 2018, 5:37 PM CDT (22:37 UTC)
Expired
Jul 17, 2018, 6:30 PM CDT
In force
53 min
Issued by
NWS Dodge City, KS

County Stevens County, KS

The radar

The Dodge City radar (KDDC), 145 km from the middle of the area, began a volume at 22:41 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

Dodge City, (KDDC), launched 12:00Z, 10.6 hours before the alert went out and 151 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, Dodge City, at 12:00Z on 2018-07-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1460 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, Dodge City, at 12:00Z on 2018-07-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 105 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
1460 J/kg
Mixed-layer CIN
-144 J/kg
Mixed-layer LCL
1371 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
105 m²/s²
0-3 km storm-relative helicity
130 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 Dodge City, KS wrote its last area forecast discussion before this special weather statement went out at Jul 17, 3:21 PM CDT, 2 hours 16 minutes earlier.

Area forecast discussion, Jul 17, 3:21 PM CDT, 2 hours 16 minutes before
Area Forecast Discussion
National Weather Service Dodge City KS
321 PM CDT Tue Jul 17 2018

...Updated short and long term discussion...

.SHORT TERM...(This evening through Wednesday)
Issued at 321 PM CDT Tue Jul 17 2018

Outflow boundary from an early morning MCS over western Nebraska
into central Kansas had pushed through southwest Kansas by late
morning. Satellite imagery shows the boundary continuing to push
south through central Oklahoma while western portions of it have
become nearly stationary over the Oklahoma Panhandle. Surface
winds north of the boundary over far southwest Kansas have veered
with time and become light and variable to southerly at 5-15 mph.
Visible satellite and radar imagery are indicating some
thunderstorms developing along the outflow boundary over the
Oklahoma Panhandle where surface moisture convergence has been
focused for the past several hours.

Model output concerning the timing and areal coverage of convection
late this afternoon through tonight is pretty variable which does
not make for much confidence in this forecast. Given the way the
surface features have lined out this afternoon, it seems that the
HRRR has the best handle on the near term storm evolution,
especially regarding the OK Panhandle storms. Later this evening
and through the overnight hours, the HRRR has been suggesting that
clusters of thunderstorms developing off the Colorado Front Range
will propagate east into southwest Kansas later this evening into
the overnight hours. This seems reasonable given the increasingly
unstable airmass developing north of the outflow boundary over far
southwest/southern Kansas as indicated by the SPC Mesoanalysis
page. A weak upper disturbance showing up in the water vapor
imagery over northwest Kansas at this time could aid in sustaining
this overnight convection. Have reconfigured late afternoon and
overnight precipitation chances to reflect this thinking. Far
northeast sections of the forecast area may not see any storms
tonight but can't totally rule them out there either.

Thunderstorms will be winding down or moving out of the forecast
area by daybreak Wednesday. The exception to this will be the
northeast part of the area around Hays. The NAM has also been
hinting at another MCS diving out of eastern Wyoming into northern
Kansas by Wednesday morning. Current forecast tracks would take it
east of the Hays area but will maintain some slight chance pops
there in the morning for that.

.LONG TERM...(Wednesday night through Tuesday)
Issued at 321 PM CDT Tue Jul 17 2018

The extended period will see the upper level ridge building
eastward toward the central and southern High Plains. The models
continue to show a break in thunderstorm activity across western
and central Kansas through the end of the week, along with the
possibility of warmer temperatures at least on Thursday and
possibly Friday. Disturbances passing by through the northern High
Plains could force frontal boundaries down into western Kansas
that will keep the very hot temperatures confined to the southern
Plains. By early next week the models show the upper level high
pressure retrograding back into the western states with northwest
flow aloft over the central High Plains. This is a favorable
pattern for late evening and overnight convective complexes
developing off the eastern slopes of the Rockies and rolling
southeast through western Kansas so we could be looking at a
return to wetter weather by the middle of next week.

&&

.AVIATION...(For the 18Z TAFS through 18Z Wednesday afternoon)
Issued at 1222 PM CDT Tue Jul 17 2018

Outflow boundary from overnight thunderstorms has move through
nearly all of southwest Kansas and is becoming stationary over
far southwest Kansas and the Oklahoma Panhandle. This will provide
the focus for widely scattered thunderstorms which could impact
the Liberal terminal by later this afternoon. Additional
thunderstorms are expected to develop along the eastern slopes of
the Rockies in Colorado this afternoon and could move out into
southwest Kansas later this evening. For now will carry VCTS at
the terminals for the late evening/overnight thunderstorm
potential and will carry a TEMPO group at least at Garden City
and Liberal as the potential for the Colorado storms making it
there is higher. There could be some MVFR cigs developing late
tonight as well but confidence in this impacting the terminals is
also not real great at this time.

&&

.PRELIMINARY POINT TEMPS/POPS...
DDC  68  94  70 100 /  40  10  10   0
GCK  67  92  67  99 /  40  10  10   0
EHA  68  96  68 101 /  30  10  10  10
LBL  68  97  69 102 /  30  10  10   0
HYS  69  89  69  97 /  30  20  10  10
P28  72  94  72 101 /  30  10  10   0

&&

.DDC WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

SHORT TERM...Gerard
LONG TERM...Gerard
AVIATION...Gerard
Hazardous weather outlook, Jul 17, 2:53 AM CDT, 14 hours 44 minutes before
Hazardous Weather Outlook
National Weather Service Dodge City KS
253 AM CDT Tue Jul 17 2018

KSZ030-031-043>046-061>066-074>081-084>090-180800-
Trego-Ellis-Scott-Lane-Ness-Rush-Hamilton-Kearny-Finney-Hodgeman-
Pawnee-Stafford-Stanton-Grant-Haskell-Gray-Ford-Edwards-Kiowa-
Pratt-Morton-Stevens-Seward-Meade-Clark-Comanche-Barber-
253 AM CDT Tue Jul 17 2018 /153 AM MDT Tue Jul 17 2018/

This hazardous weather outlook is for portions of central...south
central...southwest and west central Kansas.

.DAY ONE...Today and tonight.

Day 1 Discussion
----------------

Scattered thunderstorms will continue today and tonight. Coverage
will favor the northeast zones this morning, with scattered
thunderstorms expanding in coverage this afternoon and tonight.
Thunderstorms will again produce locally heavy rainfall and
dangerous lightning. The strongest activity will pose a risk for
strong/damaging outflow wind gusts of 50 to 60 mph.

Day 1 Hazards
-------------
* Lightning: Elevated risk
* Thunderstorm wind: Limited risk

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Days 2-7 Discussion
-------------------

Dry weather and hotter afternoons will prevail
for the remainder of the week through this weekend.
The hottest day will be Thursday, when afternoon temperatures of
100 to 104 will be common. With lower dewpoints, a heat advisory
is not expected to be required.

Days 2-7 Hazards
----------------
* Wednesday
  - Excessive heat: Elevated risk

* Thursday
  - Excessive heat: Elevated risk

* Friday
  - Excessive heat: Elevated risk

* Saturday
  - Excessive heat: Elevated risk

* Sunday
  - Excessive heat: Elevated risk

* Monday
  - Excessive heat: Elevated risk

.SPOTTER INFORMATION STATEMENT...

Limited spotter activation may be required through tonight.

&&

For more details visit our webpage http://weather.gov/ddc/ehwo

TURNER

In the hours before

Special weather statement, Jul 17, 5:20 PM CDT, 17 minutes before
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Special weather statement, Jul 17, 5:37 PM CDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 16, 7:45 PM CDTSpecial Weather StatementDDCClark60 min
Jul 16, 8:18 PM CDTSpecial Weather StatementDDCComanche27 min
Jul 17, 6:28 AM CDTAreal Flood AdvisoryDDCEllis, Trego3 hr
Jul 17, 5:20 PM CDTSpecial Weather StatementDDCSeward55 min
Jul 17, 5:44 PM CDTSevere Thunderstorm WarningDDCStevens46 min
Jul 17, 6:16 PM CDTSpecial Weather StatementDDCSeward59 min
Jul 17, 6:26 PM CDTSpecial Weather StatementDDCMeade64 min

Nearby

Special Weather Statements in Kansas, 2018Every special weather statement in 2018

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.