Alert archive / Texas / Severe Thunderstorm Warnings in 2016
Severe Thunderstorm Warning 484, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at Jun 11, 2016, 1:21 PM CDT for Foard County, Knox County, Texas. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jun 11, 2016, 1:21 PM CDT (18:21 UTC)
- Expired
- Jun 11, 2016, 2:00 PM CDT
- In force
- 39 min
- Issued by
- NWS Norman, OK
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Foard County, TX, Knox County, TX
The radar
The Altus AFB radar (KFDR), 110 km from the middle of the area, began a volume at 18:21 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.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Amarillo Airport, TX (KAMA), launched 12:00Z, 6.4 hours before the alert went out and 227 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
- 938 J/kg
- Mixed-layer CIN
- -113 J/kg
- Mixed-layer LCL
- 1189 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- -27 m²/s²
- 0-3 km storm-relative helicity
- 75 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
The text
As transmitted.
237
WUUS54 KOUN 111821
SVROUN
TXC155-275-111900-
/O.NEW.KOUN.SV.W.0484.160611T1821Z-160611T1900Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORMAN OK
121 PM CDT SAT JUN 11 2016
THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
WESTERN KNOX COUNTY IN NORTHERN TEXAS...
SOUTHWESTERN FOARD COUNTY IN NORTHERN TEXAS...
* UNTIL 200 PM CDT
* AT 120 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED 8 MILES WEST OF
TRUSCOTT AND 8 MILES WEST OF BENJAMIN...MOVING NORTH AT 15 MPH.
HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL.
SOURCE...RADAR INDICATED.
IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE
TO ROOFS...SIDING...AND TREES.
* LOCATIONS IMPACTED INCLUDE...
BENJAMIN AND TRUSCOTT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 3402 10005 3393 9965 3345 9983 3345 9999
3383 10000 3384 10005
TIME...MOT...LOC 1820Z 182DEG 12KT 3380 9996 3355 9994
HAIL...1.00IN
WIND...60MPH
$$
..SPEG.1 follow-up statement
784
WWUS54 KOUN 111856
SVSOUN
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
156 PM CDT SAT JUN 11 2016
TXC155-275-111905-
/O.EXP.KOUN.SV.W.0484.000000T0000Z-160611T1900Z/
KNOX TX-FOARD TX-
156 PM CDT SAT JUN 11 2016
...THE SEVERE THUNDERSTORM WARNING FOR WESTERN KNOX AND SOUTHWESTERN
FOARD COUNTIES WILL EXPIRE AT 200 PM CDT...
THE STORMS WHICH PROMPTED THE WARNING HAVE WEAKENED BELOW SEVERE
LIMITS...THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE. HOWEVER
VERY HEAVY RAIN WILL STILL OCCUR WITH THESE STORMS LEADING TO THE
POTENTIAL OF FLOODING. GUSTY WINDS AND SMALL HAIL WILL ALSO BE
POSSIBLE.
LAT...LON 3402 10005 3393 9965 3345 9983 3345 9999
3383 10000 3384 10005
TIME...MOT...LOC 1854Z 182DEG 12KT 3380 9996 3355 9994
$$
..SPEG.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 Norman, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 11, 12:30 PM CDT, 51 minutes earlier.
Area forecast discussion, Jun 11, 12:30 PM CDT, 51 minutes before
Area Forecast Discussion National Weather Service Norman OK 1230 pM CDT SAT JUN 11 2016 .AVIATION... VFR conditions to cont. Could see a few isolated/scattered showers/thunderstorms across north texas into south and perhaps central OK this aftn, however chances at any one site will remain low. However, models show a signal for a increase in convection overnight moving through the Red River valley and will intro a PROB30 group at SPS late tonight into early Sunday morning. 30 && .prev discussion... /issued 626 AM CDT SAT JUN 11 2016/ .DISCUSSION... Aviation discussion for the 12 UTC TAFs is below. && .AVIATION... VFR conditions are expected to continue. ISO-SCT SHRA/TSRA may be near KSPS and KLAW anytime after 14 UTC but did not mention due to low confidence of occurrence. Brief MVFR conditions with BR may affect a few sites before 14 UTC. Additional MVFR/IFR conditions with BR may affect a few sites again after 06 UTC. Chances of occurrence remain too low to mention. MBS && .PREV DISCUSSION... /issued 351 AM CDT SAT JUN 11 2016/ DISCUSSION... Hot temperatures and low rain chances over the next several days are the main concerns. Today, will monitor for isolated to scattered, mainly 20 to 40 percent coverage, showers and thunderstorms associated with a weak mid level disturbance that was located near Aspermont, Texas as of 330 AM this morning. This disturbance is forecast to slowly move east or northeast through the day and bring the highest rain chances today to western north Texas and possibly far southern Oklahoma this evening. Any shower or storm will be poorly organized and short lived with locally heavy rain and gusty winds up to 50 mph as the main hazards. Severe potential remains low due to weak shear and weak mid level lapse rates. Rainfall coverage should remain spotty at best, though there is some uncertainty on exact rain coverage. Highs today may be a degree or two cooler than yesterday, especially over western north Texas and southern Oklahoma as increasing moisture and clouds may limit heating a bit. Most areas will be rainfree today with near average temperatures and humid conditions expected. Tonight, a few showers and thunderstorms may linger mainly over southern Oklahoma near the mid level disturbance. Only kept 20 to 30 percent rain chances to account for this. Surface dewpoints should be slightly higher than previous nights, which should keep overnight lows up a bit. Cannot completely rule out patchy fog formation where rainfall occurs, though did not mention due to low confidence of occurrence. On Sunday, low rain chances may continue mainly east of I-35 closer to the weak mid level disturbance. Any storm would move slowly and could produce very heavy rainfall in small areas. Otherwise, hot and humid conditions under partly sunny conditions are expected. Sunday night into Monday, a weakening complex of storms or two may affect the area, moving southeastward. Kept low chances for storms, though confidence remains low. Monday still appears hot and very humid, though temperatures may be tricky due to cloud cover and some nearby rain. Monday night into Tuesday, a strong mid/upper level disturbance will move across the Central Plains. Latest model guidance suggested the greater potential for storms will be north of the Kansas and Oklahoma state line where weaker capping and stronger forcing are forecast. Stronger shear and sufficient potential instability would favor severe storms with this system. Hot and humid weather is expected again on Tuesday. Wednesday through Friday, the hottest conditions so far this year may invade Oklahoma and north Texas. Latest models hinted that triple digit heat may be possible in some areas with heat indices perhaps approaching Heat Advisory criteria of 105 degrees. Humidity values may be very high as well. Rain chances appear to be low due to warm mid level temperatures and strong capping. There is possibility that a back door cold front may bring some relief to the heat Friday into the weekend. MBS && .PRELIMINARY POINT TEMPS/POPS... Oklahoma City OK 90 71 89 70 / 10 10 20 20 Hobart OK 92 71 91 72 / 20 20 20 20 Wichita Falls TX 91 71 91 72 / 30 30 20 10 Gage OK 92 69 92 70 / 10 10 10 30 Ponca City OK 92 72 90 71 / 0 0 10 20 Durant OK 89 72 87 72 / 20 20 30 20 && .OUN Watches/Warnings/Advisories... OK...None. TX...None. && 23/17/17
Hazardous weather outlook, Jun 11, 11:52 AM CDT, 1 hour 29 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE NORMAN OK 1152 AM CDT SAT JUN 11 2016 OKZ004>048-050>052-TXZ083>090-121700- HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD- NOBLE-ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE- BECKHAM-WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN- CLEVELAND-POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-GREER-KIOWA-JACKSON- TILLMAN-COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON- JEFFERSON-CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-HARDEMAN- FOARD-WILBARGER-WICHITA-KNOX-BAYLOR-ARCHER-CLAY- 1152 AM CDT SAT JUN 11 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHERN... WESTERN...CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS. .DAY ONE...THIS AFTERNOON AND TONIGHT... .THUNDERSTORMS... A FEW THUNDERSTORMS WILL BE POSSIBLE ACROSS SOUTHERN OKLAHOMA AND NORTH TEXAS TODAY. HEAVY RAIN AND GUSTY WINDS WILL BE POSSIBLE WITH SOME OF THE STORMS...BUT SEVERE STORMS ARE NOT EXPECTED. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY... .THUNDERSTORMS... THERE WILL BE A CHANCE OF THUNDERSTORMS EACH DAY EXCEPT WEDNESDAY. HEAVY RAIN WILL CONTINUE TO BE A POTENTIAL PROBLEM. SEVERE STORMS WILL BE POSSIBLE IN FAR NORTHWEST OKLAHOMA LATE MONDAY. .HEAT... INCREASING TEMPERATURES AND HIGH HUMIDITY WILL RESULT IN HIGH AFTERNOON HEAT INDICES THROUGH MUCH OF THE WEEK...REACHING 100 TO 105 AT TIMES ACROSS MUCH OF CENTRAL AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS. GET GRAPHICS AND MORE DETAILS AT WEATHER.GOV/NORMAN...AND FOLLOW OUR WEATHER FORECAST OFFICE ON TWITTER AND FACEBOOK.
In the hours before
Special weather statement, Jun 11, 12:29 PM CDT, 52 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORMAN OK 1229 PM CDT SAT JUN 11 2016 TXZ087-111800- KNOX TX- 1229 PM CDT SAT JUN 11 2016 ...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL KNOX COUNTY UNTIL 100 PM CDT... AT 1226 PM CDT...A STRONG THUNDERSTORM WAS LOCATED 4 MILES SOUTHWEST OF BENJAMIN...MOVING NORTHEAST AT 20 MPH. OTHER STRONG TO SEVERE STORMS WERE LOCATED NEAR AND JUST NORTH OF KNOX CITY. HAZARDS INCLUDE... HAIL UP TO THE SIZE OF NICKELS... WIND GUSTS TO 50 MPH... FREQUENT CLOUD TO GROUND LIGHTNING... LAT...LON 3340 9998 3377 9985 3366 9953 3340 9975 TIME...MOT...LOC 1726Z 214DEG 18KT 3353 9984 ..SPEG.
Special weather statement, Jun 11, 1:13 PM CDT, 8 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
113 PM CDT SAT JUN 11 2016
OKZ050-111845-
LOVE OK-
113 PM CDT SAT JUN 11 2016
...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN LOVE COUNTY UNTIL
145 PM CDT...
AT 112 PM CDT...A STRONG THUNDERSTORM WAS LOCATED NEAR BURNEYVILLE...
MOVING NORTH AT 15 MPH.
HAZARDS INCLUDE...
HAIL UP TO THE SIZE OF NICKELS...
WIND GUSTS TO 50 MPH...
MINOR FLOODING IN AREAS OF POOR DRAINAGE...
LAT...LON 3384 9745 3389 9745 3391 9746 3407 9750
3407 9718 3386 9727 3389 9731 3387 9731
3385 9733 3388 9733 3388 9734 3384 9735
TIME...MOT...LOC 1812Z 185DEG 14KT 3391 9735
..SPEG.The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 11, 12:29 PM CDT | Special Weather Statement | OUN | Knox | 31 min |
| Jun 11, 12:53 PM CDT | Severe Thunderstorm Warning | OUN | Knox | 22 min |
| Jun 11, 1:33 PM CDT | Special Weather Statement | OUN | Wilbarger | 27 min |
| Jun 11, 1:53 PM CDT | Flash Flood Warning | OUN | Knox | 112 min |
| Jun 11, 2:15 PM CDT | Special Weather Statement | OUN | Knox | 30 min |
| Jun 11, 2:21 PM CDT | Special Weather Statement | OUN | Hardeman | 24 min |
| Jun 11, 3:25 PM CDT | Special Weather Statement | OUN | Clay | 35 min |
| Jun 11, 4:03 PM CDT | Special Weather Statement | OUN | Clay | 27 min |
| Jun 11, 4:25 PM CDT | Special Weather Statement | OUN | Clay | 35 min |
| Jun 11, 4:26 PM CDT | Special Weather Statement | OUN | Wichita | 49 min |
| Jun 11, 4:31 PM CDT | Severe Thunderstorm Warning | OUN | Wichita | 44 min |
| Jun 11, 4:46 PM CDT | Special Weather Statement | OUN | Wichita | 44 min |
| Jun 11, 4:47 PM CDT | Special Weather Statement | OUN | Clay | 43 min |
| Jun 11, 5:22 PM CDT | Special Weather Statement | OUN | Wichita | 23 min |
| Jun 11, 5:33 PM CDT | Special Weather Statement | OUN | Wichita | 42 min |
| Jun 11, 5:36 PM CDT | Special Weather Statement | OUN | Archer | 39 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2016Every severe thunderstorm warning in 2016
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.