Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 252, NWS Amarillo, TX
NWS Amarillo, TX issued this severe thunderstorm warning at Aug 20, 2007, 8:46 PM CDT for Beaver County, Texas County, Oklahoma. It was in force for 89 min. 2 reports 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
- Aug 20, 2007, 8:46 PM CDT (01:46 UTC)
- Expired
- Aug 20, 2007, 10:15 PM CDT
- In force
- 89 min
- Issued by
- NWS Amarillo, TX
- Area
- Counties, with a storm outline in the text
Counties Beaver County, OK, Texas County, OK
The radar
The Dodge City radar (KDDC), 126 km from the middle of the area, began a volume at 01:46 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 |
|---|---|---|---|
| Aug 20, 9:30 PM CDT | HAIL 0.75 | 5 S Turpin, OK | ON HIGHWAY 83 |
| Aug 20, 10:03 PM CDT | HAIL 0.75 | 2 W Adams, OK |
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 |
|---|---|---|---|
| Aug 20, 5:52 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Dodge City, (KDDC), launched 00:00Z, 1.8 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
- 1511 J/kg
- Mixed-layer CIN
- -121 J/kg
- Mixed-layer LCL
- 2343 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 7 m²/s²
- 0-3 km storm-relative helicity
- 72 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS54 KAMA 210147 SVRAMA OKC007-139-210315- /O.NEW.KAMA.SV.W.0252.070821T0146Z-070821T0315Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE AMARILLO TX 846 PM CDT MON AUG 20 2007 THE NATIONAL WEATHER SERVICE IN AMARILLO HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHWESTERN BEAVER COUNTY IN THE PANHANDLE OF OKLAHOMA NORTHEASTERN TEXAS COUNTY IN THE PANHANDLE OF OKLAHOMA * UNTIL 1015 PM CDT * AT 842 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING HALF DOLLAR SIZE HAIL... AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 8 MILES NORTH NORTHEAST OF TYRONE...OR ABOUT NEAR LIBERAL...MOVING SOUTHEAST AT 20 MPH. * LOCATIONS IMPACTED INCLUDE... FLORIS... TURPIN... TYRONE... BAKER... ADAMS... HOOKER... TO REPORT SEVERE WEATHER...PLEASE CALL THE NATIONAL WEATHER SERVICE AT 8 0 6 3 3 5 1 1 2 1. LAT...LON 3699 10058 3699 10139 3672 10126 3669 10050 $$ KRAMAR
3 follow-up statements
000 WWUS54 KAMA 210203 SVSAMA SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE AMARILLO TX 902 PM CDT MON AUG 20 2007 OKC007-139-210315- /O.CON.KAMA.SV.W.0252.000000T0000Z-070821T0315Z/ TEXAS OK-BEAVER OK- 902 PM CDT MON AUG 20 2007 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT FOR NORTHWESTERN BEAVER AND NORTHEASTERN TEXAS COUNTIES... AT 859 PM CDT...A SEVERE THUNDERSTORM WAS DETECTED CAPABLE OF PRODUCING HALF DOLLAR SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR TYRONE...OR ABOUT 11 MILES SOUTHWEST OF LIBERAL...MOVING SOUTHEAST AT 20 MPH. * LOCATIONS IMPACTED INCLUDE... TURPIN... BAKER... TYRONE... FLORIS... HOOKER... ADAMS... DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM. WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM. TO REPORT SEVERE WEATHER...PLEASE CALL THE NATIONAL WEATHER SERVICE AT 8 0 6 3 3 5 1 1 2 1. LAT...LON 3699 10058 3699 10139 3672 10126 3669 10050 $$ KRAMAR
000 WWUS54 KAMA 210217 SVSAMA SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE AMARILLO TX 918 PM CDT MON AUG 20 2007 OKC007-139-210315- /O.CON.KAMA.SV.W.0252.000000T0000Z-070821T0315Z/ TEXAS OK-BEAVER OK- 918 PM CDT MON AUG 20 2007 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT FOR NORTHWESTERN BEAVER AND NORTHEASTERN TEXAS COUNTIES... AT 916 PM CDT...A SEVERE THUNDERSTORM WAS DETECTED CAPABLE OF PRODUCING PING PONG BALL SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR BAKER...OR ABOUT 12 MILES SOUTHWEST OF LIBERAL...MOVING SOUTHEAST AT 25 MPH. * LOCATIONS IMPACTED INCLUDE... BAKER... TURPIN... BOYD... TYRONE... ADAMS... FLORIS... HOOKER... TO REPORT SEVERE WEATHER...PLEASE CALL THE NATIONAL WEATHER SERVICE AT 8 0 6 3 3 5 1 1 2 1. LAT...LON 3699 10062 3699 10133 3672 10126 3664 10064 $$ KRAMAR
000 WWUS54 KAMA 210236 SVSAMA SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE AMARILLO TX 935 PM CDT MON AUG 20 2007 OKC007-139-210315- /O.CON.KAMA.SV.W.0252.000000T0000Z-070821T0315Z/ TEXAS OK-BEAVER OK- 935 PM CDT MON AUG 20 2007 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT FOR NORTHWESTERN BEAVER AND NORTHEASTERN TEXAS COUNTIES... AT 933 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING PING PONG BALL SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS APPROACHING ADAMS OKLAHOMA...OR ABOUT 17 MILES SOUTH OF LIBERAL...MOVING SOUTHEAST AT 25 MPH. A SECOND SEVERE STORM WAS APPROACHING BOYD OKLAHOMA AND IS CAPABLE OF PRODUCING HAIL TO QUARTER SIZE. * LOCATIONS IMPACTED INCLUDE... BOYD... TURPIN... BAKER... ADAMS... FLORIS... TYRONE... HOOKER... AT 930 PM...PENNY SIZE HAIL WAS REPORTED BY A TRAINED SPOTTER 5 MILES SOUTH OF TURPIN. IF YOU ARE IN THE PATH OF THESE STORMS...TAKE IMMEDIATE ACTION TO PROTECT LIFE AND PROPERTY. TO REPORT SEVERE WEATHER...PLEASE CALL THE NATIONAL WEATHER SERVICE AT 8 0 6 3 3 5 1 1 2 1. LAT...LON 3699 10062 3699 10133 3672 10126 3664 10064 $$ KRAMAR
The office that day
Everything else NWS Amarillo, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 20, 10:12 PM CDT | Severe Thunderstorm Warning | AMA | Beaver | 46 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 2007Every severe thunderstorm warning in 2007
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.