Alert archive / Missouri / Excessive Heat Warnings in 2018

Excessive Heat Warning 1, NWS Kansas City, MO

June 27, 201822 counties in Missouri; 7 counties in Kansas

NWS Kansas City, MO issued this excessive heat warning at Jun 27, 2018, 1:30 PM CDT for 22 counties in Missouri; 7 counties in Kansas. It took effect at Jun 28, 2018, 12:00 PM CDT. It was in force for 55 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 27, 2018, 1:30 PM CDT (18:30 UTC)
In effect from
Jun 28, 2018, 12:00 PM CDT
Expired
Jun 30, 2018, 7:00 PM CDT
In force
55 hr
Issued by
NWS Kansas City, MO
All 29 counties

Atchison County, KS, Doniphan County, KS, Johnson County, KS, Leavenworth County, KS, Linn County, KS, Miami County, KS, Wyandotte County, KS, Andrew County, MO, Bates County, MO, Buchanan County, MO, Caldwell County, MO, Carroll County, MO, Cass County, MO, Chariton County, MO, Clay County, MO, Clinton County, MO, Cooper County, MO, DeKalb County, MO, Henry County, MO, Holt County, MO, Howard County, MO, Jackson County, MO, Johnson County, MO, Lafayette County, MO, Pettis County, MO, Platte County, MO, Randolph County, MO, Ray County, MO, Saline County, MO

The radar

The Pleasant Hill radar (KEAX), 43 km from the middle of the area, began a volume at 18:33 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

Omaha, NE (KOAX), launched 12:00Z, 6.5 hours before the alert went out and 301 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, Omaha, NE at 12:00Z on 2018-06-27Temperature 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, Omaha, NE at 12:00Z on 2018-06-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 62 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1239 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
62 m²/s²
0-3 km storm-relative helicity
50 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this excessive heat warning 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 excessive heat warning went out at Jun 27, 12:51 PM CDT, 39 minutes earlier.

Area forecast discussion, Jun 27, 12:51 PM CDT, 39 minutes before
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Hazardous weather outlook, Jun 27, 1:28 PM CDT, 2 minutes before
Hazardous Weather Outlook
National Weather Service Kansas City/Pleasant Hill MO
128 PM CDT Wed Jun 27 2018

KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040-
043>046-053-054-281830-
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-
128 PM CDT Wed Jun 27 2018

This hazardous weather outlook is for northwest...north central and
west central Missouri...as well as extreme eastern Kansas.

.DAY ONE...This Afternoon and Tonight

 Temperatures will climb into the low to mid 90s today with heat
 index values of 100 to 105 generally south of Highway 36. A Heat
 Advisory is in effect from 1 PM through 8 PM.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

 Hot weather will continue through Saturday with temperatures ranging
 from the mid to upper 90s for much of the area. Several locations
 across eastern Kansas and portions of western Missouri may see
 Thursday afternoon high temperatures reach the lower 100s. Heat
 indices will generally range from 100-109 Thursday through Saturday
 and morning lows will only fall into the 75-80 degree range.

 More detailed information can be accessed at...
 https://www.weather.gov/eax/hwo

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 26, 11:52 PM CDTSpecial Weather StatementEAXHenry38 min
Jun 27, 1:30 PM CDTHeat AdvisoryEAXBates, Buchanan, Carroll, Cass, Clay, Clinton and 10 more23 hr

Nearby

Excessive Heat Warnings in Missouri, 2018Excessive Heat Warnings in Kansas, 2018Every excessive heat warning 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.