Alert archive / Texas / Tornado Warnings in 2017
Tornado Warning 52, NWS Norman, OK
NWS Norman, OK issued this tornado warning at May 18, 2017, 9:11 PM CDT for Clay County, Texas. It was in force for 34 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- May 18, 2017, 9:11 PM CDT (02:11 UTC)
- Expired
- May 18, 2017, 9:45 PM CDT
- In force
- 34 min
- Issued by
- NWS Norman, OK
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 1.75 in
County Clay County, TX
The radar
The Altus AFB radar (KFDR), 100 km from the middle of the area, began a volume at 02:11 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 was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 18, 9:16 PM CDT | HAIL 1 | Lake Arrowhead, TX |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
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, 7:47 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Fort Worth, TX (KFWD), launched 00:00Z, 2.2 hours before the alert went out and 131 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
- 1519 J/kg
- Mixed-layer CIN
- -36 J/kg
- Mixed-layer LCL
- 1729 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 154 m²/s²
- 0-3 km storm-relative helicity
- 211 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 16.4
The text
As transmitted.
523
WFUS54 KOUN 190211
TOROUN
TXC077-190245-
/O.NEW.KOUN.TO.W.0052.170519T0211Z-170519T0245Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Norman OK
911 PM CDT THU MAY 18 2017
The National Weather Service in Norman has issued a
* Tornado Warning for...
Southern Clay County in northern Texas...
* Until 945 PM CDT
* At 911 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Lake Arrowhead, moving east at 30 mph.
HAZARD...Tornado and golf ball size hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* Locations impacted include...
Henrietta, Bellevue, Lake Arrowhead and Bluegrove.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a storm shelter, safe room or an interior
room on the lowest floor of a sturdy building. Avoid windows. If you
are outdoors, in a mobile home, or in a vehicle, move to the closest
substantial shelter and protect yourself from flying debris.
&&
LAT...LON 3362 9839 3377 9842 3385 9800 3362 9800
TIME...MOT...LOC 0211Z 258DEG 28KT 3367 9833
TORNADO...RADAR INDICATED
HAIL...1.75IN
$$
30The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 18, 7:05 PM CDT | Areal Flood Advisory | OUN | Clay, Wichita | 3 hr |
| May 18, 7:34 PM CDT | Severe Thunderstorm Warning | OUN | Archer, Baylor, Clay, Wichita, Wilbarger | 41 min |
| May 18, 8:09 PM CDT | Tornado Warning | OUN | Archer, Baylor | 36 min |
| May 18, 8:19 PM CDT | Flash Flood Warning | OUN | Clay, Wichita | 3 hr |
| May 18, 8:39 PM CDT | Tornado Warning | OUN | Archer, Clay | 36 min |
| May 18, 9:40 PM CDT | Tornado Warning | OUN | Clay | 20 min |
| May 18, 9:51 PM CDT | Severe Thunderstorm Warning | OUN | Clay | 39 min |
| May 19, 6:07 AM CDT | Special Weather Statement | OUN | Wilbarger | 23 min |
| May 19, 6:14 AM CDT | Severe Thunderstorm Warning | OUN | Baylor, Wilbarger | 31 min |
| May 19, 6:18 AM CDT | Special Weather Statement | OUN | Knox | 27 min |
| May 19, 7:05 AM CDT | Special Weather Statement | OUN | Archer, Baylor | 25 min |
| May 19, 7:44 AM CDT | Special Weather Statement | OUN | Archer | 31 min |
| May 19, 7:58 AM CDT | Special Weather Statement | OUN | Baylor, Wichita | 32 min |
| May 19, 8:20 AM CDT | Special Weather Statement | OUN | Clay | 40 min |
| May 19, 8:51 AM CDT | Special Weather Statement | OUN | Clay | 39 min |
| May 19, 11:03 AM CDT | Special Weather Statement | OUN | Archer | 27 min |
| May 19, 11:19 AM CDT | Severe Thunderstorm Warning | OUN | Archer, Baylor | 41 min |
| May 19, 11:55 AM CDT | Special Weather Statement | OUN | Archer | 35 min |
| May 19, 12:21 PM CDT | Special Weather Statement | OUN | Baylor | 24 min |
| May 19, 12:30 PM CDT | Special Weather Statement | OUN | Clay | 45 min |
| May 19, 12:34 PM CDT | Severe Thunderstorm Warning | OUN | Archer, Baylor | 41 min |
| May 19, 1:10 PM CDT | Special Weather Statement | OUN | Archer | 35 min |
| May 19, 1:11 PM CDT | Special Weather Statement | OUN | Knox | 49 min |
| May 19, 1:31 PM CDT | Severe Thunderstorm Warning | OUN | Archer, Clay | 44 min |
| May 19, 1:42 PM CDT | Areal Flood Advisory | OUN | Archer, Clay, Wichita | 3 hr |
| May 19, 1:48 PM CDT | Areal Flood Advisory | OUN | Baylor, Knox | 3 hr |
| May 19, 1:54 PM CDT | Severe Thunderstorm Warning | OUN | Baylor, Knox, Wilbarger | 51 min |
| May 19, 2:07 PM CDT | Special Weather Statement | OUN | Clay | 38 min |
| May 19, 2:18 PM CDT | Severe Thunderstorm Warning | OUN | Archer, Clay | 42 min |
| May 19, 2:25 PM CDT | Flash Flood Warning | OUN | Baylor, Foard, Knox, Wilbarger | 4 hr |
| May 19, 2:53 PM CDT | Special Weather Statement | OUN | Baylor, Wichita | 67 min |
| May 19, 3:00 PM CDT | Severe Thunderstorm Warning | OUN | Clay | 45 min |
| May 19, 3:03 PM CDT | Severe Thunderstorm Warning | OUN | Archer, Baylor, Wichita, Wilbarger | 42 min |
| May 19, 3:06 PM CDT | Severe Thunderstorm Warning | OUN | Archer, Baylor, Wilbarger | 39 min |
| May 19, 3:36 PM CDT | Severe Thunderstorm Warning | OUN | Clay, Wichita | 54 min |
| May 19, 4:29 PM CDT | Severe Thunderstorm Warning | OUN | Clay | 61 min |
| May 19, 4:58 PM CDT | Areal Flood Advisory | OUN | Clay, Wichita | 4 hr |
| May 19, 5:44 PM CDT | Special Weather Statement | OUN | Archer | 31 min |
| May 19, 5:48 PM CDT | Severe Thunderstorm Warning | OUN | Archer, Clay | 42 min |
| May 19, 5:59 PM CDT | Tornado Warning | OUN | Archer, Clay | 31 min |
| May 19, 6:13 PM CDT | Severe Thunderstorm Warning | OUN | Clay | 47 min |
| May 19, 6:18 PM CDT | Tornado Warning | OUN | Clay | 27 min |
| May 19, 6:35 PM CDT | Severe Thunderstorm Warning | OUN | Clay | 40 min |
Nearby
Tornado Warnings in Texas, 2017Every tornado warning in 2017Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.