Alert archive / Arkansas / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 182, NWS Little Rock, AR
NWS Little Rock, AR issued this severe thunderstorm warning at May 19, 2017, 1:28 AM CDT for 4 counties in Arkansas. It was in force for 62 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- May 19, 2017, 1:28 AM CDT (06:28 UTC)
- Expired
- May 19, 2017, 2:30 AM CDT
- In force
- 62 min
- Issued by
- NWS Little Rock, AR
- Area
- Storm-based polygon
- Hail
- 0.88 in
- Wind
- 60.0 mph
Counties Boone County, AR, Marion County, AR, Newton County, AR, Searcy County, AR
The radar
The Springfield radar (KSGF), 133 km from the middle of the area, began a volume at 06:30 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 18, 10:58 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 6.5 hours before the alert went out and 118 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
- 2055 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 1439 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 44 m²/s²
- 0-3 km storm-relative helicity
- 52 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 2.4
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Little Rock, AR wrote its last area forecast discussion before this severe thunderstorm warning went out at May 18, 10:34 PM CDT, 2 hours 54 minutes earlier.
Area forecast discussion, May 18, 10:34 PM CDT, 2 hours 54 minutes before
Area Forecast Discussion...UPDATED National Weather Service Little Rock AR 1034 PM CDT Thu May 18 2017 .UPDATE... Have updated to increase rain chances over the area in the northwest and far west tonight. 00Z upper level analysis shows a degree of ridging still in place over Arkansas, but starting to erode. Trough emenating from a closed upper low in the four corners region and interacting with a strong surface system over Oklahoma has allowed strong storms to develop and move east/northeast. Based on their current trajectory and incoming model data, these will likely clip our northwest half later tonight. There will still be a severe threat, but this should wane in the early morning hours as the storms weaken. && .PREV DISCUSSION...(ISSUED 640 PM CDT Thu May 18 2017) AVIATION... Clouds will increase over the next 24 hours, as a storm system approaches from the plains. Expect conditions to deteriorate by early Friday morning, with MVFR ceilings developing. Some improvement can be expected during the late morning and early afternoon hours, similar to today. Precipitation chances are low- confidence, except for maybe in the north. && .LZK Watches/Warnings/Advisories...NONE. && 57
Hazardous weather outlook, May 19, 12:45 AM CDT, 43 minutes before
Hazardous Weather Outlook...Updated National Weather Service Little Rock AR 1245 AM CDT Fri May 19 2017 ARZ003>007-012>016-021>025-030>034-037>047-052>057-062>069-191000- Boone-Marion-Baxter-Fulton-Sharp-Newton-Searcy-Stone-Izard- Independence-Johnson-Pope-Van Buren-Cleburne-Jackson-Logan-Conway- Faulkner-White-Woodruff-Scott-Yell-Perry-Polk-Montgomery-Garland- Saline-Pulaski-Lonoke-Prairie-Monroe-Pike-Clark-Hot Spring-Grant- Jefferson-Arkansas-Dallas-Cleveland-Lincoln-Desha-Ouachita-Calhoun- Bradley-Drew- 1245 AM CDT Fri May 19 2017 This Hazardous Weather Outlook is for a Large Part of Arkansas. .DAY ONE...Tonight The region will be between a ridge of high pressure over the southeast United States and a front and stormy conditions in the Plains. Overnight, storms from Oklahoma will build into northwest Arkansas. Some storms will be severe, with damaging winds the main concern. An isolated tornado cannot be ruled out. Locally heavy rain will also be noted, with amounts locally over an inch. .DAYS TWO THROUGH SEVEN...Friday through Wednesday Not much will change on Friday. Hit and miss showers and a few thunderstorms in the forecast, mainly in areas north and west of Little Rock. High pressure to the east will weaken Friday night and Saturday. The front to the west will head toward Arkansas, with rain chances increasing. Several rounds of thunderstorms are expected through the weekend. A few storms could become strong to severe. The stronger storms could produce large hail and damaging winds. Locally heavy rainfall will also occur. Thunderstorms will move out of the area Sunday afternoon. .Spotter Information Statement... Spotter activation may be needed Friday night and Saturday. && Visit NWS Little Rock on the web. Go to http://weather.gov/lzk. 51/46
The office that day
Everything else NWS Little Rock, AR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 19, 12:34 AM CDT | Severe Thunderstorm Warning | LZK | Johnson, Logan, Scott | 56 min |
| May 19, 12:55 AM CDT | Severe Thunderstorm Warning | LZK | Boone, Johnson, Newton | 65 min |
| May 19, 1:07 AM CDT | Severe Thunderstorm Warning | LZK | Johnson, Logan, Pope, Yell | 53 min |
| May 19, 1:42 AM CDT | Severe Thunderstorm Warning | LZK | Conway, Pope, Van Buren | 37 min |
| May 19, 2:10 AM CDT | Severe Thunderstorm Warning | LZK | Baxter, Fulton, Izard, Marion, Searcy, Stone | 30 min |
| May 19, 3:40 PM CDT | Special Weather Statement | LZK | Monroe | 50 min |
| May 19, 4:20 PM CDT | Severe Thunderstorm Warning | LZK | Monroe, Prairie, White, Woodruff | 40 min |
| May 19, 4:38 PM CDT | Severe Thunderstorm Warning | LZK | Cleburne, Independence, White | 52 min |
| May 19, 5:07 PM CDT | Severe Thunderstorm Warning | LZK | Cleburne, Independence, Izard, Sharp, Stone | 38 min |
| May 19, 5:12 PM CDT | Special Weather Statement | LZK | White | 48 min |
| May 19, 5:42 PM CDT | Special Weather Statement | LZK | White | 48 min |
| May 19, 5:43 PM CDT | Special Weather Statement | LZK | Conway, Van Buren | 47 min |
| May 19, 5:45 PM CDT | Severe Thunderstorm Warning | LZK | Independence, Jackson, White | 45 min |
| May 19, 5:49 PM CDT | Special Weather Statement | LZK | Lonoke | 41 min |
| May 19, 5:57 PM CDT | Severe Thunderstorm Warning | LZK | Faulkner, Lonoke, Pulaski | 48 min |
| May 19, 6:10 PM CDT | Special Weather Statement | LZK | Fulton, Izard | 50 min |
| May 19, 6:22 PM CDT | Severe Thunderstorm Warning | LZK | Fulton, Izard, Sharp | 53 min |
| May 19, 6:45 PM CDT | Severe Thunderstorm Warning | LZK | Lonoke, White | 45 min |
| May 19, 6:47 PM CDT | Special Weather Statement | LZK | Faulkner | 43 min |
| May 19, 6:57 PM CDT | Severe Thunderstorm Warning | LZK | Faulkner | 48 min |
Nearby
Severe Thunderstorm Warnings in Arkansas, 2017Every severe thunderstorm warning 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.