Alert archive / Arkansas / Tornado Watches in 2020
Tornado Watch 191
The Storm Prediction Center issued this tornado watch at May 16, 2020, 3:27 PM CDT for 4 states. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- May 16, 2020, 3:27 PM CDT (20:27 UTC)
- Expired
- May 16, 2020, 9:00 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 0.5 in
- Strongest gust expected
- 60 kt
All 35 counties
Calhoun County, AR, Clark County, AR, Columbia County, AR, Dallas County, AR, Garland County, AR, Hempstead County, AR, Hot Spring County, AR, Howard County, AR, Lafayette County, AR, Little River County, AR, Miller County, AR, Montgomery County, AR, Nevada County, AR, Ouachita County, AR, Pike County, AR, Polk County, AR, Sevier County, AR, Union County, AR, Bossier Parish, LA, Caddo Parish, LA, Claiborne Parish, LA, Union Parish, LA, Webster Parish, LA, McCurtain County, OK, Bowie County, TX, Camp County, TX, Cass County, TX, Franklin County, TX, Harrison County, TX, Marion County, TX, Morris County, TX, Red River County, TX, Titus County, TX, Upshur County, TX, Wood County, TX
The radar
The Shreveport radar (KSHV), 149 km from the middle of the area, began a volume at 20:30 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
- 50%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 30%
- 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
- 40%
Warnings issued inside it
27 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 16, 3:36 PM CDT | Tornado Warning | SHV | Bowie, Cass | 24 min |
| May 16, 3:44 PM CDT | Tornado Warning | SHV | McCurtain | 46 min |
| May 16, 3:47 PM CDT | Tornado Warning | SHV | McCurtain | 43 min |
| May 16, 3:56 PM CDT | Tornado Warning | SHV | Little River | 49 min |
| May 16, 4:23 PM CDT | Tornado Warning | SHV | McCurtain | 52 min |
| May 16, 4:27 PM CDT | Tornado Warning | SHV | Bowie, Cass | 19 min |
| May 16, 4:37 PM CDT | Tornado Warning | SHV | Little River | 38 min |
| May 16, 4:43 PM CDT | Tornado Warning | SHV | Columbia | 47 min |
| May 16, 5:00 PM CDT | Tornado Warning | SHV | Bowie | 20 min |
| May 16, 5:12 PM CDT | Tornado Warning | SHV | McCurtain | 48 min |
| May 16, 5:16 PM CDT | Tornado Warning | SHV | Little River, Miller | 29 min |
| May 16, 5:16 PM CDT | Tornado Warning | SHV | Columbia, Union | 44 min |
| May 16, 5:19 PM CDT | Tornado Warning | SHV | Columbia, Lafayette, Nevada | 41 min |
| May 16, 5:35 PM CDT | Tornado Warning | SHV | Hempstead, Howard, Little River, Miller, Sevier | 40 min |
| May 16, 5:42 PM CDT | Flash Flood Warning | SHV | McCurtain | 4 hr |
| May 16, 5:58 PM CDT | Tornado Warning | SHV | Hempstead, Nevada | 47 min |
| May 16, 6:09 PM CDT | Tornado Warning | SHV | Sevier | 37 min |
| May 16, 6:36 PM CDT | Flash Flood Warning | SHV | Hempstead, Howard, Little River, Sevier | 3 hr |
| May 16, 6:45 PM CDT | Tornado Warning | SHV | Hempstead | 18 min |
| May 16, 6:47 PM CDT | Severe Thunderstorm Warning | LZK | Clark, Pike | 43 min |
| May 16, 6:48 PM CDT | Flash Flood Warning | SHV | Hempstead, Nevada | 117 min |
| May 16, 6:50 PM CDT | Tornado Warning | LZK | Clark, Pike | 25 min |
| May 16, 7:30 PM CDT | Severe Thunderstorm Warning | LZK | Clark, Garland, Hot Spring, Montgomery, Pike | 35 min |
| May 16, 8:11 PM CDT | Flash Flood Warning | LZK | Clark, Garland, Hot Spring, Montgomery, Pike | 3 hr |
| May 16, 8:13 PM CDT | Tornado Warning | SHV | Union | 32 min |
| May 16, 8:31 PM CDT | Severe Thunderstorm Warning | LZK | Calhoun, Ouachita | 16 min |
| May 16, 8:32 PM CDT | Tornado Warning | SHV | Union | 17 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
Shreveport, LA (KSHV), launched 12:00Z, 8.5 hours before the alert went out and 144 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
- 144 J/kg
- Mixed-layer CIN
- -88 J/kg
- Mixed-layer LCL
- 699 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 20 m²/s²
- 0-3 km storm-relative helicity
- 43 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
678 WWUS20 KWNS 162023 SEL1 SPC WW 162023 ARZ000-LAZ000-OKZ000-TXZ000-170200- URGENT - IMMEDIATE BROADCAST REQUESTED Tornado Watch Number 191 NWS Storm Prediction Center Norman OK 325 PM CDT Sat May 16 2020 The NWS Storm Prediction Center has issued a * Tornado Watch for portions of southwest Arkansas northwest Louisiana southeast Oklahoma northeast Texas * Effective this Saturday afternoon and evening from 325 PM until 900 PM CDT. * Primary threats include... A few tornadoes possible Isolated damaging wind gusts to 70 mph possible SUMMARY...Low topped supercells may remain capable of producing a few tornadoes in the Ark-La-Tex region this afternoon into early evening. The tornado watch area is approximately along and 75 statute miles east and west of a line from 35 miles north of De Queen AR to 45 miles south southwest of El Dorado AR. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU1). 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. && AVIATION...Tornadoes and a few severe thunderstorms with hail surface and aloft to 0.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 400. Mean storm motion vector 18030. ...Dial
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 16, 1:16 PM CDT | Mesoscale Discussion | SPC | Ashley, Bradley, Calhoun, Clark, Cleveland, Columbia and 19 more | 2 hr |
| May 16, 5:31 PM CDT | Mesoscale Discussion | SPC | Columbia, Hempstead, Howard, Lafayette, Little River, Miller and 4 more | 59 min |
| May 16, 6:21 PM CDT | Mesoscale Discussion | SPC | Ashley, Chicot, Drew | 84 min |
| May 15, 8:18 PM CDT | Mesoscale Discussion | SPC | Beaver, Cimarron, Texas | 2 hr |
| May 15, 8:56 PM CDT | Mesoscale Discussion | SPC | Atascosa, Bandera, Bastrop, Bee, Bell, Bexar and 71 more | 2 hr |
| May 15, 9:14 PM CDT | Severe Thunderstorm Watch | SPC | Aransas, Atascosa, Bandera, Bastrop, Bee, Bell and 66 more | 7 hr |
| May 15, 11:44 PM CDT | Mesoscale Discussion | SPC | Aransas, Atascosa, Austin, Bastrop, Bee, Bell and 48 more | 2 hr |
| May 16, 12:54 AM CDT | Severe Thunderstorm Watch | SPC | Austin, Brazoria, Chambers, Colorado, Fort Bend, Galveston and 6 more | 4 hr |
| May 16, 1:31 AM CDT | Mesoscale Discussion | SPC | Aransas, Brooks, Calhoun, Duval, Goliad, Hidalgo and 11 more | 89 min |
Nearby
Tornado Watches in Arkansas, 2020Tornado Watches in Texas, 2020Tornado Watches in Louisiana, 2020Every tornado watch in 2020
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.