Alert archive / Arkansas / Tornado Watches in 2017
Tornado Watch 162
The Storm Prediction Center issued this tornado watch at Apr 26, 2017, 10:08 AM CDT for 57 counties in Arkansas; 9 parishes in Louisiana; 13 counties in Texas. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 26, 2017, 10:08 AM CDT (15:08 UTC)
- Expired
- Apr 26, 2017, 5:00 PM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 79 counties
Arkansas County, AR, Baxter County, AR, Bradley County, AR, Calhoun County, AR, Clark County, AR, Clay County, AR, Cleburne County, AR, Cleveland County, AR, Columbia County, AR, Conway County, AR, Craighead County, AR, Cross County, AR, Dallas County, AR, Desha County, AR, Drew County, AR, Faulkner County, AR, Fulton County, AR, Garland County, AR, Grant County, AR, Greene County, AR, Hempstead County, AR, Hot Spring County, AR, Howard County, AR, Independence County, AR, Izard County, AR, Jackson County, AR, Jefferson County, AR, Lafayette County, AR, Lawrence County, AR, Lee County, AR, Lincoln County, AR, Little River County, AR, Lonoke County, AR, Miller County, AR, Monroe County, AR, Montgomery County, AR, Nevada County, AR, Ouachita County, AR, Perry County, AR, Phillips County, AR, Pike County, AR, Poinsett County, AR, Pope County, AR, Prairie County, AR, Pulaski County, AR, Randolph County, AR, Saline County, AR, Searcy County, AR, Sevier County, AR, Sharp County, AR, St. Francis County, AR, Stone County, AR, Union County, AR, Van Buren County, AR, White County, AR, Woodruff County, AR, Yell County, AR, Bienville Parish, LA, Bossier Parish, LA, Caddo Parish, LA, Claiborne Parish, LA, De Soto Parish, LA, Lincoln Parish, LA, Red River Parish, LA, Union Parish, LA, Webster Parish, LA, Bowie County, TX, Camp County, TX, Cass County, TX, Gregg County, TX, Harrison County, TX, Marion County, TX, Morris County, TX, Panola County, TX, Rusk County, TX, Smith County, TX, Titus County, TX, Upshur County, TX, Wood County, TX
The radar
The Little Rock radar (KLZK), 34 km from the middle of the area, began a volume at 15:09 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
- 70%
- One or more EF2 to EF5 tornadoes
- 50%
- Ten or more severe wind reports
- 80%
- One or more gusts of 65 knots or more
- 20%
- Ten or more severe hail reports
- 80%
- One or more hailstones of 2 inches or more
- 50%
- Six or more combined severe hail and wind reports
- 95%
Warnings issued inside it
28 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 26, 10:08 AM CDT | Severe Thunderstorm Warning | SHV | Howard, Sevier | 52 min |
| Apr 26, 10:11 AM CDT | Severe Thunderstorm Warning | LZK | Conway, Newton, Pope, Searcy, Van Buren | 49 min |
| Apr 26, 10:23 AM CDT | Severe Thunderstorm Warning | LZK | Conway, Faulkner, Pope | 37 min |
| Apr 26, 10:27 AM CDT | Severe Thunderstorm Warning | LZK | Garland, Montgomery, Perry, Scott, Yell | 33 min |
| Apr 26, 10:28 AM CDT | Tornado Warning | LZK | Conway, Faulkner, Pope, Van Buren | 26 min |
| Apr 26, 10:44 AM CDT | Severe Thunderstorm Warning | LZK | Cleburne, Conway, Faulkner, Searcy, Stone, Van Buren | 46 min |
| Apr 26, 11:16 AM CDT | Flash Flood Warning | LZK | Boone, Johnson, Marion, Newton, Pope, Searcy | 3 hr |
| Apr 26, 11:51 AM CDT | Severe Thunderstorm Warning | LZK | Fulton, Izard, Sharp | 12 min |
| Apr 26, 12:18 PM CDT | Severe Thunderstorm Warning | SHV | Howard, Little River, Sevier | 42 min |
| Apr 26, 12:35 PM CDT | Severe Thunderstorm Warning | SHV | Bowie, Camp, Franklin, Morris, Red River, Titus | 40 min |
| Apr 26, 1:32 PM CDT | Severe Thunderstorm Warning | SHV | Smith, Upshur, Wood | 43 min |
| Apr 26, 2:01 PM CDT | Flash Flood Warning | LZK | Garland, Montgomery | 3 hr |
| Apr 26, 2:38 PM CDT | Flash Flood Warning | LZK | Conway, Perry | 3 hr |
| Apr 26, 2:56 PM CDT | Severe Thunderstorm Warning | LZK | Dallas, Grant, Hot Spring, Saline | 34 min |
| Apr 26, 3:09 PM CDT | Severe Thunderstorm Warning | SHV | Cass, Harrison, Marion | 17 min |
| Apr 26, 3:19 PM CDT | Severe Thunderstorm Warning | SHV | Harrison, Panola, Rusk | 41 min |
| Apr 26, 3:42 PM CDT | Severe Thunderstorm Warning | SHV | Columbia, Nevada | 48 min |
| Apr 26, 3:43 PM CDT | Flash Flood Warning | LZK | Clark, Dallas, Grant, Hot Spring, Lonoke, Ouachita and 2 more | 3 hr |
| Apr 26, 4:04 PM CDT | Severe Thunderstorm Warning | SHV | Columbia, Lafayette | 24 min |
| Apr 26, 4:07 PM CDT | Severe Thunderstorm Warning | LZK | Arkansas, Lonoke, Monroe, Prairie | 53 min |
| Apr 26, 4:11 PM CDT | Tornado Warning | LZK | Arkansas, Jefferson, Lonoke, Prairie | 34 min |
| Apr 26, 4:18 PM CDT | Severe Thunderstorm Warning | LZK | Calhoun, Dallas, Ouachita | 57 min |
| Apr 26, 4:21 PM CDT | Tornado Warning | LZK | Monroe, Prairie, Woodruff | 39 min |
| Apr 26, 4:28 PM CDT | Severe Thunderstorm Warning | SHV | Columbia | 24 min |
| Apr 26, 4:33 PM CDT | Severe Thunderstorm Warning | LZK | Monroe, Prairie, Woodruff | 42 min |
| Apr 26, 4:46 PM CDT | Severe Thunderstorm Warning | LZK | Jackson, Woodruff | 44 min |
| Apr 26, 4:49 PM CDT | Severe Thunderstorm Warning | MEG | Crittenden, Cross, Poinsett, St. Francis | 41 min |
| Apr 26, 4:53 PM CDT | Flash Flood Warning | MEG | Craighead, Greene, Lawrence, Randolph | 3 hr |
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 (KBYH), launched 12:00Z, 3.1 hours before the alert went out and 242 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
- 271 J/kg
- Mixed-layer CIN
- -181 J/kg
- Mixed-layer LCL
- 821 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 129 m²/s²
- 0-3 km storm-relative helicity
- 160 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.9
The text
As transmitted.
313
WWUS20 KWNS 261505
SEL2
SPC WW 261505
ARZ000-LAZ000-TXZ000-262200-
URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 162
NWS Storm Prediction Center Norman OK
1005 AM CDT Wed Apr 26 2017
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Much of Arkansas
Northwest Louisiana
Northeast Texas
* Effective this Wednesday morning and afternoon from 1005 AM
until 500 PM CDT.
* Primary threats include...
A few tornadoes likely with a couple intense tornadoes possible
Widespread large hail likely with isolated very large hail
events to 2 inches in diameter possible
Widespread damaging wind gusts to 70 mph likely
SUMMARY...Severe storms will move across the watch area through this
afternoon, posing a risk of locally damaging winds, large hail, and
a few tornadoes. An isolated strong tornado or two is also
possible.
The tornado watch area is approximately along and 90 statute miles
east and west of a line from 25 miles north of Walnut Ridge AR to 35
miles southeast of Longview TX. For a complete depiction of the
watch see the associated watch outline update (WOUS64 KWNS WOU2).
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 161...WW 9997...
AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 2 inches. Extreme turbulence and surface wind
gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 24035.
...HartSPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 25, 10:51 PM CDT | Mesoscale Discussion | SPC | Benton, Boone, Carroll, Madison, Washington | 54 min |
| Apr 25, 11:27 PM CDT | Severe Thunderstorm Watch | SPC | Benton, Carroll, Crawford, Franklin, Madison, Sebastian and 1 more | 7 hr |
| Apr 26, 1:42 AM CDT | Mesoscale Discussion | SPC | Baxter, Boone, Carroll, Crawford, Franklin, Johnson and 10 more | 2 hr |
| Apr 26, 5:37 AM CDT | Mesoscale Discussion | SPC | Conway, Crawford, Franklin, Garland, Howard, Johnson and 14 more | 113 min |
| Apr 26, 6:00 AM CDT | Severe Thunderstorm Watch | SPC | Baxter, Boone, Carroll, Conway, Crawford, Franklin and 23 more | 7 hr |
| Apr 26, 7:29 AM CDT | Mesoscale Discussion | SPC | Baxter, Boone, Carroll, Conway, Crawford, Franklin and 23 more | 2 hr |
| Apr 26, 9:39 AM CDT | Mesoscale Discussion | SPC | Arkansas, Baxter, Bradley, Calhoun, Clark, Clay and 47 more | 36 min |
| Apr 26, 1:05 PM CDT | Mesoscale Discussion | SPC | Clark, Columbia, Dallas, Grant, Hempstead, Hot Spring and 9 more | 85 min |
| Apr 26, 3:53 PM CDT | Mesoscale Discussion | SPC | Clay | 97 min |
| Apr 26, 4:23 PM CDT | Mesoscale Discussion | SPC | Arkansas, Ashley, Bradley, Calhoun, Chicot, Cleveland and 19 more | 67 min |
| Apr 26, 4:44 PM CDT | Tornado Watch | SPC | Arkansas, Ashley, Bradley, Calhoun, Chicot, Cleveland and 11 more | 5 hr |
| Apr 26, 5:02 PM CDT | Severe Thunderstorm Watch | SPC | Clay, Craighead, Crittenden, Cross, Greene, Lee and 4 more | 6 hr |
| Apr 26, 6:10 PM CDT | Mesoscale Discussion | SPC | Mississippi | 95 min |
| Apr 25, 7:14 PM CDT | Mesoscale Discussion | SPC | McDonald | 91 min |
| Apr 26, 12:26 PM CDT | Mesoscale Discussion | SPC | Bollinger, Butler, Cape Girardeau, Carter, Madison, Mississippi and 6 more | 94 min |
| Apr 26, 12:46 PM CDT | Severe Thunderstorm Watch | SPC | Bollinger, Butler, Cape Girardeau, Carter, Madison, Perry and 6 more | 6 hr |
Nearby
Tornado Watches in Arkansas, 2017Tornado Watches in Texas, 2017Tornado Watches in Louisiana, 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.