Alert archive / Missouri / Tornado Watches in 2017
Tornado Watch 44
The Storm Prediction Center issued this tornado watch at Feb 28, 2017, 6:23 PM CST for 21 counties in Missouri. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Feb 28, 2017, 6:23 PM CST (00:23 UTC)
- Expired
- Feb 28, 2017, 11:49 PM CST
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2.5 in
- Strongest gust expected
- 60 kt
All 21 counties
Adair County, MO, Bates County, MO, Carroll County, MO, Cass County, MO, Chariton County, MO, Cooper County, MO, Grundy County, MO, Henry County, MO, Howard County, MO, Johnson County, MO, Lafayette County, MO, Linn County, MO, Livingston County, MO, Macon County, MO, Pettis County, MO, Putnam County, MO, Randolph County, MO, Ray County, MO, Saline County, MO, Schuyler County, MO, Sullivan County, MO
The radar
The Pleasant Hill radar (KEAX), 73 km from the middle of the area, began a volume at 00:26 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
- 30%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 60%
Warnings issued inside it
16 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 28, 6:37 PM CST | Severe Thunderstorm Warning | EAX | Carroll, Chariton, Lafayette, Saline | 38 min |
| Feb 28, 7:11 PM CST | Severe Thunderstorm Warning | EAX | Chariton, Howard, Randolph, Saline | 51 min |
| Feb 28, 7:52 PM CST | Severe Thunderstorm Warning | EAX | Johnson, Lafayette | 23 min |
| Feb 28, 8:13 PM CST | Severe Thunderstorm Warning | EAX | Lafayette, Saline | 15 min |
| Feb 28, 8:46 PM CST | Severe Thunderstorm Warning | EAX | Bates, Cass | 29 min |
| Feb 28, 8:51 PM CST | Severe Thunderstorm Warning | EAX | Cass, Johnson | 24 min |
| Feb 28, 9:10 PM CST | Severe Thunderstorm Warning | EAX | Bates, Cass, Johnson | 35 min |
| Feb 28, 9:22 PM CST | Severe Thunderstorm Warning | EAX | Johnson | 23 min |
| Feb 28, 9:31 PM CST | Severe Thunderstorm Warning | EAX | Cass, Henry, Johnson | 29 min |
| Feb 28, 9:44 PM CST | Severe Thunderstorm Warning | EAX | Bates, Cass, Henry, Johnson | 46 min |
| Feb 28, 9:46 PM CST | Severe Thunderstorm Warning | EAX | Johnson, Pettis | 44 min |
| Feb 28, 9:48 PM CST | Severe Thunderstorm Warning | EAX | Bates | 42 min |
| Feb 28, 9:57 PM CST | Severe Thunderstorm Warning | EAX | Henry, Johnson | 48 min |
| Feb 28, 10:24 PM CST | Severe Thunderstorm Warning | EAX | Bates, Cass, Henry | 36 min |
| Feb 28, 10:39 PM CST | Severe Thunderstorm Warning | EAX | Cooper, Pettis | 51 min |
| Feb 28, 11:14 PM CST | Severe Thunderstorm Warning | EAX | Henry, Pettis | 31 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
Topeka, KS (KFOE), launched 00:00Z, 0.4 hours before the alert went out and 185 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2351 m above ground
- 0-6 km bulk shear
- 80 kt
- 0-1 km storm-relative helicity
- 123 m²/s²
- 0-3 km storm-relative helicity
- 144 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
253
WWUS20 KWNS 010017
SEL4
SPC WW 010017
KSZ000-MOZ000-010700-
URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 44
NWS Storm Prediction Center Norman OK
720 PM CDT Tue Feb 28 2017
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Extreme eastern Kansas
West-central and northern Missouri
* Effective this Tuesday night and Wednesday morning from 720 PM
until 200 AM CDT.
* Primary threats include...
A couple tornadoes possible
Isolated very large hail events to 2.5 inches in diameter
possible
Isolated damaging wind gusts to 70 mph possible
SUMMARY...Thunderstorms developing near a cold front will offer
severe hail and gusts, and an increasing tornado threat with time,
while moving into strengthening moisture over the watch area. See
SPC mesoscale discussion 223 for additional/initial meteorological
guidance.
The tornado watch area is approximately along and 50 statute miles
east and west of a line from 40 miles south southwest of Knob Noster
MO to 25 miles north of Kirksville MO. For a complete depiction of
the watch see the associated watch outline update (WOUS64 KWNS
WOU4).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A Tornado Watch means conditions are favorable for
tornadoes and severe thunderstorms in and close to the watch
area. Persons in these areas should be on the lookout for
threatening weather conditions and listen for later statements
and possible warnings.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 41...WW 42...WW 43...
AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 2.5 inches. Extreme turbulence and surface wind
gusts to 60 knots. A few cumulonimbi with maximum tops to 450. Mean
storm motion vector 25035.
...EdwardsSPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 28, 6:05 PM CST | Mesoscale Discussion | SPC | Adair, Audrain, Barton, Bates, Benton, Boone and 39 more | 115 min |
| Feb 28, 7:46 PM CST | Mesoscale Discussion | SPC | Bollinger, Butler, Cape Girardeau, Carter, Dunklin, Madison and 10 more | 119 min |
| Feb 28, 8:06 PM CST | Mesoscale Discussion | SPC | Clark, Lewis | 84 min |
| Feb 28, 8:29 PM CST | Tornado Watch | SPC | Bollinger, Butler, Cape Girardeau, Carter, Dunklin, Mississippi and 7 more | 12 hr |
| Feb 28, 9:04 PM CST | Tornado Watch | SPC | Audrain, Barry, Barton, Benton, Boone, Callaway and 54 more | 7 hr |
| Feb 28, 10:01 PM CST | Mesoscale Discussion | SPC | Barry, Barton, Bates, Benton, Camden, Cedar and 14 more | 119 min |
| Feb 28, 10:09 PM CST | Mesoscale Discussion | SPC | Bollinger, Cape Girardeau, Perry | 66 min |
| Mar 1, 12:16 AM CST | Mesoscale Discussion | SPC | Barton, Camden, Cedar, Christian, Cole, Crawford and 28 more | 89 min |
| Mar 1, 2:09 AM CST | Mesoscale Discussion | SPC | Bollinger, Butler, Cape Girardeau, Carter, Dunklin, Madison and 9 more | 2 hr |
| Mar 1, 3:03 AM CST | Tornado Watch | SPC | Bollinger, Butler, Cape Girardeau, Carter, Dunklin, Mississippi and 7 more | 5 hr |
| Mar 1, 4:19 AM CST | Mesoscale Discussion | SPC | Mississippi | 56 min |
Nearby
Tornado Watches in Missouri, 2017Every tornado watch in 2017
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.