Alert archive / Missouri / Frost Advisories in 2021

Frost Advisory 4, NWS Springfield, MO

April 21, 20214 counties in Missouri; Cherokee County, Crawford County, Kansas

NWS Springfield, MO issued this frost advisory at Apr 21, 2021, 2:52 AM CDT for 4 counties in Missouri; Cherokee County, Crawford County, Kansas. It took effect at Apr 21, 2021, 10:00 PM CDT. It was in force for 11 hr.

The area

The counties it named.

The facts

Issued
Apr 21, 2021, 2:52 AM CDT (07:52 UTC)
In effect from
Apr 21, 2021, 10:00 PM CDT
Expired
Apr 22, 2021, 9:00 AM CDT
In force
11 hr
Issued by
NWS Springfield, MO

Counties Cherokee County, KS, Crawford County, KS, Barry County, MO, Jasper County, MO, McDonald County, MO, Newton County, MO

The radar

The Springfield radar (KSGF), 94 km from the middle of the area, began a volume at 07:55 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, 7.9 hours before the alert went out and 57 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, Springfield, MO at 00:00Z on 2021-04-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 8 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 00:00Z on 2021-04-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -66 square meters per square second.1939587897Sfc1 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
8 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
830 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
-66 m²/s²
0-3 km storm-relative helicity
12 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

447 
WWUS73 KSGF 210752
NPWSGF

URGENT - WEATHER MESSAGE
National Weather Service Springfield MO
252 AM CDT Wed Apr 21 2021

KSZ073-MOZ055>058-066>071-077>083-089>092-094>098-103>106-212000-
/O.NEW.KSGF.FZ.W.0004.210422T0300Z-210422T1400Z/
/O.CON.KSGF.FZ.W.0003.000000T0000Z-210421T1400Z/
Bourbon-Benton-Morgan-Miller-Maries-Vernon-St. Clair-Hickory-
Camden-Pulaski-Phelps-Barton-Cedar-Polk-Dallas-Laclede-Texas-Dent-
Dade-Greene-Webster-Wright-Lawrence-Christian-Douglas-Howell-
Shannon-Stone-Taney-Ozark-Oregon-
Including the cities of Fort Scott, Pawnee Station, Warsaw, 
Whitakerville, Cole Camp, Crockerville, Mora, Edmonson, Lincoln, 
Versailles, Rocky Mount, Stover, Laurie, Aurora Springs, Eldon, 
Lake Ozark, Vichy, Nevada, Tiffin, Appleton City, Johnson City, 
Weaubleau, Hermitage, Pittsburg, Quincy, Wheatland, 
Cross Timbers, Osage Beach, Camdenton, Decaturville, Roach, 
Village of Four Seasons, Fort Leonard Wood, Laquey, Waynesville, 
Northwye, Rolla, Kenoma, Lamar, Cedar Springs, El Dorado Springs,
Filley, Arnica, Caplinger Mills, Stockton, Bolivar, Buffalo, 
Charity, Foose, March, Plad, Windyville, Olive, Lynchburg, 
Lebanon, Plato, Roby, Bendavis, Huggins, Lake Spring, Bangert, 
Darien, Gladden, Howes, Jadwin, Salem, Greenfield, Lockwood, 
Meinert, Springfield, Marshfield, Northview, Seymour, 
Rogersville, Dawson, Graff, Mountain Grove, Duncan, Mansfield, 
Aurora, Mount Vernon, Marionville, Nixa, Christian Center, Ozark,
Selmore, Vanzant, Ava, Goodhope, Rome, Squires, Dogwood, Pomona, 
Pottersville, Siloam Springs, South Fork, West Plains, 
White Church, Teresita, Winona, Birch Tree, Montier, 
Kimberling City, Crane, Elsey, Indian Point, Silver Dollar City, 
Branson, Hollister, Kirbyville, Edgewater Beach, Forsyth, 
Ozark Beach, Powersite, Wasola, Thayer, Alton, Couch, Greer, 
Thomasville, and Wilderness
252 AM CDT Wed Apr 21 2021

...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM CDT THIS MORNING...
...FREEZE WARNING IN EFFECT FROM 10 PM THIS EVENING TO 9 AM CDT
THURSDAY...

* WHAT...Another freeze is expected tonight into Thursday morning
  with low temperatures ranging from 26 to 31 degrees.

* WHERE...Bourbon County Kansas and most of the Missouri Ozarks.

* WHEN...The first Freeze Warning will end at 9 AM CDT this
  morning. The second Freeze Warning is in effect from 10 PM this
  evening to 9 AM CDT Thursday.

* IMPACTS...Frost and freeze conditions will kill crops, other
  sensitive vegetation and possibly damage unprotected outdoor
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

KSZ097-101-MOZ088-093-101-102-212000-
/O.NEW.KSGF.FR.Y.0004.210422T0300Z-210422T1400Z/
/O.CON.KSGF.FZ.W.0003.000000T0000Z-210421T1400Z/
Crawford-Cherokee-Jasper-Newton-McDonald-Barry-
Including the cities of Chicopee, Lone Oak, Pittsburg, 
Baxter Springs, Lowell, Riverton, Columbus, Neutral, Sherwin, 
Stippville, Joplin, Carthage, Neosho, Anderson, Noel, Goodman, 
South West City, Pineville, Rocky Comfort, Monett, Madry, 
and Cassville
252 AM CDT Wed Apr 21 2021

...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM CDT THIS MORNING...
...FROST ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 9 AM CDT
THURSDAY...

* WHAT...Temperatures tonight into Thursday morning are expected
  to fall into the low 30s. Frost will be possible again tonight.

* WHERE...In Kansas, Crawford and Cherokee Counties. In 
  Missouri, Jasper, Newton, McDonald and Barry Counties.

* WHEN...A Freeze Warning will end at 9 AM CDT this morning. The
  Frost Advisory is in effect from 10 PM this evening to 9 AM CDT
  Thursday.

* IMPACTS...Frost and freeze conditions will kill crops, other
  sensitive vegetation and possibly damage unprotected outdoor
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

Cramer
3 follow-up statements
102 
WWUS73 KSGF 211407
NPWSGF

URGENT - WEATHER MESSAGE
National Weather Service Springfield MO
907 AM CDT Wed Apr 21 2021

KSZ073-MOZ055>058-066>071-077>083-089>092-094>098-103>106-220215-
/O.EXP.KSGF.FZ.W.0003.000000T0000Z-210421T1400Z/
/O.CON.KSGF.FZ.W.0004.210422T0300Z-210422T1400Z/
Bourbon-Benton-Morgan-Miller-Maries-Vernon-St. Clair-Hickory-
Camden-Pulaski-Phelps-Barton-Cedar-Polk-Dallas-Laclede-Texas-Dent-
Dade-Greene-Webster-Wright-Lawrence-Christian-Douglas-Howell-
Shannon-Stone-Taney-Ozark-Oregon-
Including the cities of Fort Scott, Pawnee Station, Warsaw, 
Whitakerville, Cole Camp, Crockerville, Mora, Edmonson, Lincoln, 
Versailles, Rocky Mount, Stover, Laurie, Aurora Springs, Eldon, 
Lake Ozark, Vichy, Nevada, Tiffin, Appleton City, Johnson City, 
Weaubleau, Hermitage, Pittsburg, Quincy, Wheatland, 
Cross Timbers, Osage Beach, Camdenton, Decaturville, Roach, 
Village of Four Seasons, Fort Leonard Wood, Laquey, Waynesville, 
Northwye, Rolla, Kenoma, Lamar, Cedar Springs, El Dorado Springs,
Filley, Arnica, Caplinger Mills, Stockton, Bolivar, Buffalo, 
Charity, Foose, March, Plad, Windyville, Olive, Lynchburg, 
Lebanon, Plato, Roby, Bendavis, Huggins, Lake Spring, Bangert, 
Darien, Gladden, Howes, Jadwin, Salem, Greenfield, Lockwood, 
Meinert, Springfield, Marshfield, Northview, Seymour, 
Rogersville, Dawson, Graff, Mountain Grove, Duncan, Mansfield, 
Aurora, Mount Vernon, Marionville, Nixa, Christian Center, Ozark,
Selmore, Vanzant, Ava, Goodhope, Rome, Squires, Dogwood, Pomona, 
Pottersville, Siloam Springs, South Fork, West Plains, 
White Church, Teresita, Winona, Birch Tree, Montier, 
Kimberling City, Crane, Elsey, Indian Point, Silver Dollar City, 
Branson, Hollister, Kirbyville, Edgewater Beach, Forsyth, 
Ozark Beach, Powersite, Wasola, Thayer, Alton, Couch, Greer, 
Thomasville, and Wilderness
907 AM CDT Wed Apr 21 2021

...FREEZE WARNING REMAINS IN EFFECT FROM 10 PM THIS EVENING TO
9 AM CDT THURSDAY...
...FREEZE WARNING HAS EXPIRED...

* WHAT...Another freeze is expected tonight into Thursday morning
  with low temperatures ranging from 26 to 31 degrees.


* WHERE...Portions of southeast Kansas and central, east 
  central, south central, southwest and west central Missouri.

* WHEN...From 10 PM this evening to 9 AM CDT Thursday.

* IMPACTS...Frost and freeze conditions will kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

KSZ097-101-MOZ088-093-101-102-220215-
/O.EXP.KSGF.FZ.W.0003.000000T0000Z-210421T1400Z/
/O.CON.KSGF.FR.Y.0004.210422T0300Z-210422T1400Z/
Crawford-Cherokee-Jasper-Newton-McDonald-Barry-
Including the cities of Chicopee, Lone Oak, Pittsburg, 
Baxter Springs, Lowell, Riverton, Columbus, Neutral, Sherwin, 
Stippville, Joplin, Carthage, Neosho, Anderson, Noel, Goodman, 
South West City, Pineville, Rocky Comfort, Monett, Madry, 
and Cassville
907 AM CDT Wed Apr 21 2021

...FROST ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING TO
9 AM CDT THURSDAY...
...FREEZE WARNING HAS EXPIRED...

* WHAT...Temperatures tonight into Thursday morning are expected
  to fall into the low 30s. Frost will be possible again tonight.

* WHERE...In Kansas, Cherokee and Crawford Counties. In 
  Missouri, Newton, Jasper, McDonald and Barry Counties.

* WHEN...From 10 PM this evening to 9 AM CDT Thursday.

* IMPACTS...Frost could kill sensitive outdoor vegetation if 
  left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

Titus
011 
WWUS73 KSGF 220226
NPWSGF

URGENT - WEATHER MESSAGE
National Weather Service Springfield MO
926 PM CDT Wed Apr 21 2021

KSZ073-MOZ055>058-066>071-077>083-089>092-094>098-103>106-221400-
/O.CON.KSGF.FZ.W.0004.210422T0300Z-210422T1400Z/
Bourbon-Benton-Morgan-Miller-Maries-Vernon-St. Clair-Hickory-
Camden-Pulaski-Phelps-Barton-Cedar-Polk-Dallas-Laclede-Texas-Dent-
Dade-Greene-Webster-Wright-Lawrence-Christian-Douglas-Howell-
Shannon-Stone-Taney-Ozark-Oregon-
Including the cities of Fort Scott, Pawnee Station, Warsaw, 
Whitakerville, Cole Camp, Crockerville, Mora, Edmonson, Lincoln, 
Versailles, Rocky Mount, Stover, Laurie, Aurora Springs, Eldon, 
Lake Ozark, Vichy, Nevada, Tiffin, Appleton City, Johnson City, 
Weaubleau, Hermitage, Pittsburg, Quincy, Wheatland, 
Cross Timbers, Osage Beach, Camdenton, Decaturville, Roach, 
Village of Four Seasons, Fort Leonard Wood, Laquey, Waynesville, 
Northwye, Rolla, Kenoma, Lamar, Cedar Springs, El Dorado Springs,
Filley, Arnica, Caplinger Mills, Stockton, Bolivar, Buffalo, 
Charity, Foose, March, Plad, Windyville, Olive, Lynchburg, 
Lebanon, Plato, Roby, Bendavis, Huggins, Lake Spring, Bangert, 
Darien, Gladden, Howes, Jadwin, Salem, Greenfield, Lockwood, 
Meinert, Springfield, Marshfield, Northview, Seymour, 
Rogersville, Dawson, Graff, Mountain Grove, Duncan, Mansfield, 
Aurora, Mount Vernon, Marionville, Nixa, Christian Center, Ozark,
Selmore, Vanzant, Ava, Goodhope, Rome, Squires, Dogwood, Pomona, 
Pottersville, Siloam Springs, South Fork, West Plains, 
White Church, Teresita, Winona, Birch Tree, Montier, 
Kimberling City, Crane, Elsey, Indian Point, Silver Dollar City, 
Branson, Hollister, Kirbyville, Edgewater Beach, Forsyth, 
Ozark Beach, Powersite, Wasola, Thayer, Alton, Couch, Greer, 
Thomasville, and Wilderness
926 PM CDT Wed Apr 21 2021

...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM CDT THURSDAY...

* WHAT...Sub-freezing temperatures as low as 28 expected.

* WHERE...Portions of southeast Kansas and central, east 
  central, south central, southwest and west central Missouri.

* WHEN...Until 9 AM CDT Thursday.

* IMPACTS...Frost and freeze conditions will kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

KSZ097-101-MOZ088-093-101-102-221400-
/O.CON.KSGF.FR.Y.0004.210422T0300Z-210422T1400Z/
Crawford-Cherokee-Jasper-Newton-McDonald-Barry-
Including the cities of Chicopee, Lone Oak, Pittsburg, 
Baxter Springs, Lowell, Riverton, Columbus, Neutral, Sherwin, 
Stippville, Joplin, Carthage, Neosho, Anderson, Noel, Goodman, 
South West City, Pineville, Rocky Comfort, Monett, Madry, 
and Cassville
926 PM CDT Wed Apr 21 2021

...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM CDT THURSDAY...

* WHAT...Temperatures as low as 31 will result in frost 
  formation.

* WHERE...In Kansas, Cherokee and Crawford Counties. In 
  Missouri, Newton, Jasper, McDonald and Barry Counties.

* WHEN...Until 9 AM CDT Thursday.

* IMPACTS...Frost could kill sensitive outdoor vegetation if 
  left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$
280 
WWUS73 KSGF 221402
NPWSGF

URGENT - WEATHER MESSAGE
National Weather Service Springfield MO
902 AM CDT Thu Apr 22 2021

KSZ073-MOZ055>058-066>071-077>083-089>092-094>098-103>106-221515-
/O.EXP.KSGF.FZ.W.0004.000000T0000Z-210422T1400Z/
Bourbon-Benton-Morgan-Miller-Maries-Vernon-St. Clair-Hickory-
Camden-Pulaski-Phelps-Barton-Cedar-Polk-Dallas-Laclede-Texas-Dent-
Dade-Greene-Webster-Wright-Lawrence-Christian-Douglas-Howell-
Shannon-Stone-Taney-Ozark-Oregon-
Including the cities of Fort Scott, Pawnee Station, Warsaw, 
Whitakerville, Cole Camp, Crockerville, Mora, Edmonson, Lincoln, 
Versailles, Rocky Mount, Stover, Laurie, Aurora Springs, Eldon, 
Lake Ozark, Vichy, Nevada, Tiffin, Appleton City, Johnson City, 
Weaubleau, Hermitage, Pittsburg, Quincy, Wheatland, 
Cross Timbers, Osage Beach, Camdenton, Decaturville, Roach, 
Village of Four Seasons, Fort Leonard Wood, Laquey, Waynesville, 
Northwye, Rolla, Kenoma, Lamar, Cedar Springs, El Dorado Springs,
Filley, Arnica, Caplinger Mills, Stockton, Bolivar, Buffalo, 
Charity, Foose, March, Plad, Windyville, Olive, Lynchburg, 
Lebanon, Plato, Roby, Bendavis, Huggins, Lake Spring, Bangert, 
Darien, Gladden, Howes, Jadwin, Salem, Greenfield, Lockwood, 
Meinert, Springfield, Marshfield, Northview, Seymour, 
Rogersville, Dawson, Graff, Mountain Grove, Duncan, Mansfield, 
Aurora, Mount Vernon, Marionville, Nixa, Christian Center, Ozark,
Selmore, Vanzant, Ava, Goodhope, Rome, Squires, Dogwood, Pomona, 
Pottersville, Siloam Springs, South Fork, West Plains, 
White Church, Teresita, Winona, Birch Tree, Montier, 
Kimberling City, Crane, Elsey, Indian Point, Silver Dollar City, 
Branson, Hollister, Kirbyville, Edgewater Beach, Forsyth, 
Ozark Beach, Powersite, Wasola, Thayer, Alton, Couch, Greer, 
Thomasville, and Wilderness
902 AM CDT Thu Apr 22 2021

...FREEZE WARNING HAS EXPIRED...

Temperatures have warmed into the low 40s.

$$

KSZ097-101-MOZ088-093-101-102-221515-
/O.EXP.KSGF.FR.Y.0004.000000T0000Z-210422T1400Z/
Crawford-Cherokee-Jasper-Newton-McDonald-Barry-
Including the cities of Chicopee, Lone Oak, Pittsburg, 
Baxter Springs, Lowell, Riverton, Columbus, Neutral, Sherwin, 
Stippville, Joplin, Carthage, Neosho, Anderson, Noel, Goodman, 
South West City, Pineville, Rocky Comfort, Monett, Madry, 
and Cassville
902 AM CDT Thu Apr 22 2021

...FROST ADVISORY HAS EXPIRED...

Temperatures have warmed into the low 40s.

$$

Titus

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 21, 2:52 AM CDTFreeze WarningSGFBarton, Benton, Camden, Cedar, Christian, Dade and 24 more30 hr

Nearby

Frost Advisories in Missouri, 2021Frost Advisories in Kansas, 2021Every frost advisory 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.