Alert archive / Missouri / Special Weather Statements in 2021
Special Weather Statement, NWS Kansas City, MO
NWS Kansas City, MO issued this special weather statement at Apr 7, 2021, 12:31 PM CDT for DeKalb County, Missouri. It was in force for 29 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
- Apr 7, 2021, 12:31 PM CDT (17:31 UTC)
- Expired
- Apr 7, 2021, 1:00 PM CDT
- In force
- 29 min
- Issued by
- NWS Kansas City, MO
County DeKalb County, MO
The radar
The Pleasant Hill radar (KEAX), 140 km from the middle of the area, began a volume at 17:33 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
Topeka, KS (KTOP), launched 12:00Z, 5.5 hours before the alert went out and 157 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.
- Mixed-layer CAPE
- 1 J/kg
- Mixed-layer CIN
- -337 J/kg
- Mixed-layer LCL
- 1401 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 43 m²/s²
- 0-3 km storm-relative helicity
- 156 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.5
The text
As transmitted.
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</html>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 Apr 7, 12:15 PM CDT, 16 minutes earlier.
Area forecast discussion, Apr 7, 12:15 PM CDT, 16 minutes before
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<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
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Please try again in a few minutes.
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</html>Hazardous weather outlook, Apr 7, 5:07 AM CDT, 7 hours 24 minutes before
Hazardous Weather Outlook National Weather Service Kansas City/Pleasant Hill MO 507 AM CDT Wed Apr 7 2021 KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040- 043>046-053-054-081015- 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- 507 AM CDT Wed Apr 7 2021 This hazardous weather outlook is for northwest...north central and west central Missouri...as well as extreme eastern Kansas. .DAY ONE...Today and Tonight First round of storms are expected to move out of the area completely by 6am. By midday, another round of strong to severe storms are possible. Strong wind gusts and large hail are the main threats, with the tornado risk low at this time. More detailed information can be accessed at... https://www.weather.gov/eax/hwo .DAYS TWO THROUGH SEVEN...Thursday through Tuesday Rain is expected to continue through early Thursday, with another chance for rain to arrive Friday night. More detailed information can be accessed at... https://www.weather.gov/eax/hwo
In the hours before
Special weather statement, Apr 7, 6:33 AM CDT, 5 hours 58 minutes before
Special Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
633 AM CDT Wed Apr 7 2021
MOZ046-071200-
Cooper MO-
633 AM CDT Wed Apr 7 2021
...SIGNIFICANT WEATHER ADVISORY FOR EASTERN COOPER COUNTY UNTIL 700
AM CDT...
At 633 AM CDT, Doppler radar was tracking a strong thunderstorm near
Boonville, moving northeast at 50 mph.
Penny size hail will be possible with this storm.
Locations impacted include...
Boonville, Prairie Home and Wooldridge.
This includes Interstate 70 in Missouri between mile markers 101 and
114.
LAT...LON 3868 9262 3869 9278 3897 9280 3898 9270
3898 9263 3897 9261 3897 9256 3892 9250
TIME...MOT...LOC 1133Z 235DEG 44KT 3889 9267
BlairSpecial weather statement, Apr 7, 11:24 AM CDT, 1 hour 7 minutes before
Special Weather Statement National Weather Service Kansas City/Pleasant Hill MO 1124 AM CDT Wed Apr 7 2021 MOZ005-006-071700- Mercer MO-Harrison MO- 1124 AM CDT Wed Apr 7 2021 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN MERCER AND SOUTHEASTERN HARRISON COUNTIES UNTIL NOON CDT... At 1124 AM CDT, Doppler radar was tracking a strong thunderstorm near Gilman City, or 7 miles southeast of Bethany, moving north at 30 mph. Half inch hail will be possible with this storm. Locations impacted include... Mount Moriah. PRECAUTIONARY/PREPAREDNESS ACTIONS... This storm may intensify, so be certain to monitor local radio stations and available television stations for additional information and possible warnings from the National Weather Service. && LAT...LON 4040 9366 4014 9384 4016 9398 4046 9390 TIME...MOT...LOC 1624Z 201DEG 27KT 4022 9391 CDB
Special weather statement, Apr 7, 11:39 AM CDT, 52 minutes before
Special Weather Statement National Weather Service Kansas City/Pleasant Hill MO 1139 AM CDT Wed Apr 7 2021 MOZ006-015-016-071715- Grundy MO-Mercer MO-Sullivan MO- 1139 AM CDT Wed Apr 7 2021 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN GRUNDY... SOUTHEASTERN MERCER AND NORTHWESTERN SULLIVAN COUNTIES UNTIL 1215 PM CDT... At 1139 AM CDT, Doppler radar was tracking a strong thunderstorm near Trenton, moving northeast at 30 mph. Half inch hail will be possible with this storm. Locations impacted include... Spickard, Tindall, Harris and Osgood. PRECAUTIONARY/PREPAREDNESS ACTIONS... This storm may intensify, so be certain to monitor local radio stations and available television stations for additional information and possible warnings from the National Weather Service. && LAT...LON 4008 9346 4014 9361 4037 9356 4031 9318 TIME...MOT...LOC 1639Z 215DEG 27KT 4014 9352 CDB
Special weather statement, Apr 7, 12:31 PM CDT, 0 minutes before
Special Weather Statement National Weather Service Kansas City/Pleasant Hill MO 1231 PM CDT Wed Apr 7 2021 MOZ004-013-071800- De Kalb MO-Gentry MO- 1231 PM CDT Wed Apr 7 2021 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN GENTRY AND NORTHWESTERN DEKALB COUNTIES UNTIL 100 PM CDT... At 1231 PM CDT, Doppler radar was tracking a strong thunderstorm near Union Star, or 8 miles northwest of Maysville, moving north at 40 mph. Half inch hail and winds in excess of 40 mph will be possible with this storm. Locations impacted include... Stanberry, King City, Union Star and Ford City. PRECAUTIONARY/PREPAREDNESS ACTIONS... This storm may intensify, so be certain to monitor local radio stations and available television stations for additional information and possible warnings from the National Weather Service. && A Severe Thunderstorm Watch remains in effect until 700 PM CDT for northwestern Missouri. LAT...LON 4015 9425 3986 9449 3993 9461 4024 9460 TIME...MOT...LOC 1731Z 197DEG 33KT 3996 9450 CDB
The office that day
Everything else NWS Kansas City, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 7, 6:33 AM CDT | Special Weather Statement | EAX | Cooper | 27 min |
| Apr 7, 11:24 AM CDT | Special Weather Statement | EAX | Harrison | 36 min |
| Apr 7, 11:39 AM CDT | Special Weather Statement | EAX | Grundy | 36 min |
| Apr 7, 1:16 PM CDT | Special Weather Statement | EAX | Henry | 29 min |
| Apr 7, 1:21 PM CDT | Special Weather Statement | EAX | Worth | 24 min |
| Apr 7, 1:40 PM CDT | Special Weather Statement | EAX | Henry | 35 min |
| Apr 7, 2:49 PM CDT | Severe Thunderstorm Warning | EAX | Pettis | 26 min |
| Apr 7, 3:09 PM CDT | Severe Thunderstorm Warning | EAX | Cooper, Pettis | 23 min |
| Apr 7, 3:34 PM CDT | Special Weather Statement | EAX | Howard | 26 min |
| Apr 7, 4:39 PM CDT | Special Weather Statement | EAX | Adair, Macon | 51 min |
Nearby
Special Weather Statements in Missouri, 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.