Alert archive / Missouri / Tornado Watches in 2019
Tornado Watch 681
The Storm Prediction Center issued this tornado watch at Oct 21, 2019, 3:06 AM CDT for 5 states. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Oct 21, 2019, 3:06 AM CDT (08:06 UTC)
- Expired
- Oct 21, 2019, 9:00 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1 in
- Strongest gust expected
- 60 kt
All 74 counties
Clay County, AR, Craighead County, AR, Crittenden County, AR, Cross County, AR, Greene County, AR, Lee County, AR, Mississippi County, AR, Phillips County, AR, Poinsett County, AR, St. Francis County, AR, Alexander County, IL, Clinton County, IL, Franklin County, IL, Jackson County, IL, Jefferson County, IL, Johnson County, IL, Marion County, IL, Massac County, IL, Monroe County, IL, Perry County, IL, Pulaski County, IL, Randolph County, IL, Saint Clair County, IL, Union County, IL, Washington County, IL, Williamson County, IL, Ballard County, KY, Carlisle County, KY, Fulton County, KY, Graves County, KY, Hickman County, KY, McCracken County, KY, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Carter County, MO, Crawford County, MO, Dunklin County, MO, Iron County, MO, Jefferson County, MO, Madison County, MO, Mississippi County, MO, New Madrid County, MO, Pemiscot County, MO, Perry County, MO, Reynolds County, MO, Ripley County, MO, Saint Francois County, MO, Sainte Genevieve County, MO, Scott County, MO, Stoddard County, MO, Washington County, MO, Wayne County, MO, Benton County, TN, Carroll County, TN, Chester County, TN, Crockett County, TN, Decatur County, TN, Dyer County, TN, Fayette County, TN, Gibson County, TN, Hardeman County, TN, Hardin County, TN, Haywood County, TN, Henderson County, TN, Henry County, TN, Lake County, TN, Lauderdale County, TN, Madison County, TN, McNairy County, TN, Obion County, TN, Shelby County, TN, Tipton County, TN, Weakley County, TN
The radar
The Memphis radar (KNQA), 118 km from the middle of the area, began a volume at 08:07 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.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 40%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 40%
- One or more gusts of 65 knots or more
- 20%
- Ten or more severe hail reports
- 5%
- One or more hailstones of 2 inches or more
- 5%
- Six or more combined severe hail and wind reports
- 50%
Warnings issued inside it
25 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 21, 3:08 AM CDT | Severe Thunderstorm Warning | LSX | Crawford, Iron, Reynolds, Washington | 67 min |
| Oct 21, 3:11 AM CDT | Severe Thunderstorm Warning | PAH | Carter, Ripley, Wayne | 49 min |
| Oct 21, 3:37 AM CDT | Severe Thunderstorm Warning | PAH | Butler, Wayne | 23 min |
| Oct 21, 3:41 AM CDT | Severe Thunderstorm Warning | MEG | Craighead, Crittenden, Cross, Greene, Lee, Poinsett and 1 more | 49 min |
| Oct 21, 3:44 AM CDT | Severe Thunderstorm Warning | LSX | Monroe, Randolph | 46 min |
| Oct 21, 3:45 AM CDT | Severe Thunderstorm Warning | PAH | Bollinger, Cape Girardeau, Stoddard | 30 min |
| Oct 21, 4:00 AM CDT | Severe Thunderstorm Warning | PAH | Jackson | 45 min |
| Oct 21, 4:02 AM CDT | Severe Thunderstorm Warning | PAH | Franklin, Jefferson | 28 min |
| Oct 21, 4:26 AM CDT | Severe Thunderstorm Warning | MEG | Craighead, Crittenden, Cross, Mississippi, Poinsett | 49 min |
| Oct 21, 5:05 AM CDT | Severe Thunderstorm Warning | MEG | Crittenden, Cross, Lee, Poinsett, St. Francis | 40 min |
| Oct 21, 5:11 AM CDT | Severe Thunderstorm Warning | MEG | Craighead, Mississippi, Poinsett | 49 min |
| Oct 21, 5:40 AM CDT | Severe Thunderstorm Warning | PAH | Johnson, Pope, Saline, Williamson | 35 min |
| Oct 21, 5:44 AM CDT | Severe Thunderstorm Warning | MEG | Craighead, Crittenden, Cross, Mississippi, Poinsett | 46 min |
| Oct 21, 5:52 AM CDT | Tornado Warning | MEG | Mississippi, Poinsett | 12 min |
| Oct 21, 5:56 AM CDT | Severe Thunderstorm Warning | MEG | Crittenden, Cross, Lee, St. Francis | 49 min |
| Oct 21, 6:13 AM CDT | Severe Thunderstorm Warning | MEG | Mississippi | 47 min |
| Oct 21, 6:20 AM CDT | Severe Thunderstorm Warning | MEG | Crittenden | 40 min |
| Oct 21, 6:23 AM CDT | Tornado Warning | MEG | Lauderdale, Tipton | 25 min |
| Oct 21, 6:26 AM CDT | Tornado Warning | MEG | Crittenden | 34 min |
| Oct 21, 6:26 AM CDT | Tornado Warning | MEG | Mississippi | 25 min |
| Oct 21, 6:40 AM CDT | Tornado Warning | MEG | Shelby | 20 min |
| Oct 21, 7:00 AM CDT | Severe Thunderstorm Warning | MEG | Pemiscot | 45 min |
| Oct 21, 7:01 AM CDT | Severe Thunderstorm Warning | MEG | Fayette, Hardeman, Haywood, Lauderdale, Madison, Shelby and 1 more | 44 min |
| Oct 21, 7:08 AM CDT | Severe Thunderstorm Warning | PAH | Fulton, Graves, Hickman | 29 min |
| Oct 21, 7:09 AM CDT | Tornado Warning | MEG | Fayette, Hardeman | 14 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Little Rock, AR (KLZK), launched 00:00Z, 8.1 hours before the alert went out and 170 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
- 689 J/kg
- Mixed-layer CIN
- -31 J/kg
- Mixed-layer LCL
- 952 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- 67 m²/s²
- 0-3 km storm-relative helicity
- 167 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 1.6
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 20, 7:01 PM CDT | Tornado Watch | SPC | Columbia, Hempstead, Howard, Lafayette, Little River, Miller and 2 more | 7 hr |
| Oct 20, 8:27 PM CDT | Tornado Watch | SPC | Benton, Carroll, Crawford, Franklin, Madison, Sebastian and 1 more | 5 hr |
| Oct 20, 10:19 PM CDT | Mesoscale Discussion | SPC | Benton, Washington | 86 min |
| Oct 20, 11:32 PM CDT | Mesoscale Discussion | SPC | Baxter, Clark, Cleburne, Cleveland, Conway, Dallas and 27 more | 88 min |
| Oct 20, 11:48 PM CDT | Tornado Watch | SPC | Arkansas, Baxter, Boone, Bradley, Calhoun, Clark and 41 more | 8 hr |
| Oct 21, 1:50 AM CDT | Tornado Watch | SPC | Columbia, Hempstead, Howard, Lafayette, Little River, Miller and 3 more | 5 hr |
| Oct 21, 4:57 AM CDT | Mesoscale Discussion | SPC | Ashley, Bradley, Chicot, Desha, Drew | 63 min |
| Oct 21, 5:30 AM CDT | Severe Thunderstorm Watch | SPC | Ashley, Chicot | 4 hr |
| Oct 21, 1:54 AM CDT | Mesoscale Discussion | SPC | Alexander, Franklin, Jackson, Johnson, Massac, Perry and 6 more | 2 hr |
| Oct 21, 6:59 AM CDT | Mesoscale Discussion | SPC | Calloway, Christian, Todd, Trigg | 91 min |
| Oct 20, 9:39 PM CDT | Mesoscale Discussion | SPC | Barry, Barton, Bates, Benton, Camden, Cedar and 21 more | 96 min |
| Oct 20, 10:21 PM CDT | Tornado Watch | SPC | Barry, Barton, Camden, Cedar, Christian, Dade and 24 more | 5 hr |
Nearby
Tornado Watches in Missouri, 2019Tornado Watches in Tennessee, 2019Tornado Watches in Illinois, 2019Every tornado watch in 2019
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.