Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2004
Severe Thunderstorm Warning 201, NWS Amarillo, TX
NWS Amarillo, TX issued this severe thunderstorm warning at Aug 10, 2004, 11:42 PM CDT for Cimarron County, Oklahoma. It was in force for 93 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 10, 2004, 11:42 PM CDT (04:42 UTC)
- Expired
- Aug 11, 2004, 1:15 AM CDT
- In force
- 93 min
- Issued by
- NWS Amarillo, TX
- Area
- Counties, with a storm outline in the text
County Cimarron County, OK
The radar
The Amarillo radar (KAMA), 184 km from the middle of the area, began a volume at 04:45 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 11, 12:16 AM CDT | TSTM WND GST 72 | 17 Ne Boise City, OK | |
| Aug 11, 12:16 AM CDT | TSTM WND GST 72 | 17 Ne Boise City, OK |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
Did it verify
Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 34 minutes after it went out.
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 00:00Z, 4.7 hours before the alert went out and 185 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
- 1333 J/kg
- Mixed-layer CIN
- -13 J/kg
- Mixed-layer LCL
- 2174 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- -9 m²/s²
- 0-3 km storm-relative helicity
- 95 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS54 KAMA 110442 SVRAMA OKC025-110615- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE AMARILLO TX 1138 PM CDT TUE AUG 10 2004 THE NATIONAL WEATHER SERVICE IN AMARILLO HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CIMARRON COUNTY IN THE PANHANDLE OF OKLAHOMA * UNTIL 115 AM CDT * AT 1137 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. THE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 17 MILES NORTH OF STURGIS TO 15 MILES WEST OF BLACK MESA PARK. SEVERE WINDS MAY PRECEDE THE STORMS. * OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WHEELESS...KEYES...GRIGGS...FELT AND BOISE CITY. IN ADDITION TO DAMAGING WINDS AND HAIL...CONTINUOUS CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. DAMAGING WINDS UP TO 70 MPH WERE REPORTED AT 1127 PM IN SPRINGFIELD COLORADO WITH THIS STORM. THIS IS A DANGEROUS STORM...SEEK SAFE SHELTER AND STAY AWAY FROM WINDOWS LAT...LON 3697 10204 3697 10297 3652 10294 3653 10206 $$ KRAMAR
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 Amarillo, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 10, 3:45 PM CDT, 7 hours 57 minutes earlier.
Area forecast discussion, Aug 10, 3:45 PM CDT, 7 hours 57 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE AMARILLO TX 345 PM CDT TUE AUG 10 2004 .DISCUSSION... ACTIVE WEATHER PATTERN APPEARS TO BE SETTING UP FOR TONIGHT ACROSS THE REGION AS APPORACHING H7 S/W MOVES TOWARDS THE REGION. BIG QUESTION RIGHT NOW IS WHETHER OR NOT STORMS WILL FORM ACROSS THE REGION PRIOR TO S/W PASSAGE. DEWPTS ARE NOT AS HIGH AS THIS TIME YESTERDAY...BUT DEVELOPING SFC LOW OVER SE CO HAS HELPED TO POOL MOISTURE OVER THE OK PNHDL. ADDITIONALLY...SFC BOUNDARY RUNS FROM NEAR TURKEY OVER AMARILLO TO NEAR STRATFORD LATE THIS AFTERNOON AND THIS COULD INITIATE STORMS. WILL HAVE TO WATCH CLOSELY...AND FEEL SVR WX THREAT WILL BE EARLY ON AS STORMS DEVELOP AND MATURE. TORNADO THREAT IS NOT QUITE AS HIGH AS WINDSPEEDS ARE FAIRLY WEAK BELOW 600 MB. DAMAGING WINDS AND LOW END SVR HAIL SHOULD BE THE BIG ISSUE...THAT IS UNTIL LATE TONIGHT. STORMS FIRING ACROSS CO AND NM SHOULD EVOLVE INTO A MCS AND ROLL ACROSS THE REGION OVERNIGHT. THE BEST CHANCE FOR STORMS SHOULD BE OVER THE NE TX AND ERN OK PNHDLS...BUT ALL OF THE AREA SHOULD SEE A GOOD CHANCE AT RAIN. SEVERE THREAT APPEARS TO EVOLVE INTO A DAMAGING WIND SCENARIO...ESPECIALLY IF THE STORMS CAN GET ORGANIZED EARLY IN THEIR LIFE CYCLE. ONLY CHANGES TO GRIDS/FCST IN THE SHORT TERM WERE TO ADJUST POP GRIDS TO REFLECT EXPECTED MOVEMENT AND COVERAGE OF STORMS AND TO TWEAK TEMPS. COLD FRONT APPEARS TO HOLD OFF UNTIL EARLY TOMORROW MORNING AS 20Z SFC ANALYSIS SHOWS THIS STILL LOCATED OVER NRN KS/SRN NE. ADDITIONALLY...STRONG LOW ACROSS THE NRN U.S. STILL DIVING SOUTH AND THIS WILL HOLD FRONT UP A BIT AS WELL. THIS LOW WILL HELP TO ESTABLISH DEEP TROF ACROSS THE ERN U.S...WITH NORTHWEST FLOW ENTRENCHED OVER THE REGION AT LEAST THROUGH THE NEXT 7 DAYS. PRECIP CHANCES WILL BE MODERATED BY ANY S/W ACTIVITY PASSING ACROSS THE AREA AND ALSO BY AMOUNT OF LOW-LEVEL HEATING TO DESTABILIZE THE ATMOSPHERE. DID ADD IN 10% POPS FOR LATE SUNDAY INTO MONDAY FOR POSSIBLE S/W MOVING ACROSS THE REGION. OTHERWISE...NO CHANGES TO GRIDS BEYOND THURSDAY. FCSTID = JORDAN && .PRELIMINARY POINT TEMPS/POPS... AMARILLO 61 73 54 80 / 60 30 20 30 BEAVER 58 73 53 79 / 90 20 20 30 BOISE CITY 57 71 53 76 / 80 20 20 30 BORGER 62 74 54 80 / 70 30 20 30 BOYS RANCH 62 73 54 79 / 60 30 20 30 CANYON 62 75 55 81 / 60 30 20 30 CLARENDON 63 75 57 81 / 70 30 20 30 DALHART 59 73 53 78 / 70 20 20 30 GUYMON 59 73 53 79 / 80 20 20 30 HEREFORD 61 76 55 81 / 60 30 20 30 LIPSCOMB 60 75 55 80 / 90 30 20 30 PAMPA 61 74 56 80 / 70 30 20 30 SHAMROCK 64 76 56 80 / 70 30 20 30 WELLINGTON 65 76 58 81 / 70 40 20 30 && .AMA WATCHES/WARNINGS/ADVISORIES... TX...NONE. OK...NONE. && 11/17
Hazardous weather outlook, Aug 10, 1:00 PM CDT, 10 hours 42 minutes before
TEXAS/OKLAHOMA PANHANDLES HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AMARILLO TX 100 PM CDT TUE AUG 10 2004 OKZ001>003-TXZ001>020-111100- ARMSTRONG-BEAVER-CARSON-CIMARRON-COLLINGSWORTH-DALLAM-DEAF SMITH- DONLEY-GRAY-HANSFORD-HARTLEY-HEMPHILL-HUTCHINSON-LIPSCOMB-MOORE- OCHILTREE-OLDHAM-POTTER-RANDALL-ROBERTS-SHERMAN-TEXAS-WHEELER- 100 PM CDT TUE AUG 10 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE TEXAS AND OKLAHOMA PANHANDLES. .DAY ONE... THERE IS A MODERATE RISK OF SEVERE THUNDERSTORMS FOR ALL OF THE OKLAHOMA PANHANDLE...AND THE NORTHERN HALF OF THE TEXAS PANHANDLE TONIGHT. THE MODERATE RISK AREA IS ALONG AND NORTH OF A ROMERO TO PANHANDLE TO WHEELER LINE. THERE IS ALSO A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER THE REMAINDER OF THE TEXAS PANHANDLE TONIGHT. LARGE HAIL AND DAMAGING WINDS ARE THE PRIMARY THREATS...ESPECIALLY ACROSS THE MODERATE RISK AREA. IN ADDITION...A FLOOD WATCH FOR FLASH FLOODING REMAINS IN EFFECT THROUGH TONIGHT. THUNDERSTORMS WILL LIKELY PRODUCE VERY HEAVY RAINFALL IN JUST A SHORT PERIOD OF TIME WHICH WILL RESULT IN LOCALIZED FLASH FLOODING. .DAYS TWO THROUGH SEVEN... THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS WEDNESDAY AND EVENING ACROSS THE EXTREME WESTERN OKLAHOMA AND TEXAS PANHANDLES. THE SLIGHT RISK AREA IS ALONG AND WEST OF A LINE EXTENDING FROM NEAR SPRINGFIELD COLORADO TO BETWEEN HEREFORD AND BOOTLEG. DAMAGING WINDS AND LARGE HAIL WILL BE THE PRIMARY SEVERE WEATHER THREATS FROM ANY OF THE THUNDERSTORMS. SHOWERS AND THUNDERSTORMS ARE EXPECTED THURSDAY THROUGH SATURDAY NIGHT. A FEW STORMS COULD REACH SEVERE STRENGTH... RESULTING IN LARGE HAIL AND DAMAGING WINDS. LOCALLY HEAVY RAINFALL WILL ALSO BE POSSIBLE WITH ANY OF THE THUNDERSTORMS THAT FORM THIS WEEK...WHICH MAY LEAD TO LOCALIZED FLOODING OR FLASH FLOODING. .SPOTTER INFORMATION STATEMENT... EMERGENCY MANAGEMENT AND SPOTTER GROUPS ACROSS ALL OF THE OKLAHOMA AND TEXAS PANHANDLES SHOULD REMAIN ALERT AND BE READY FOR ACTIVATION TONIGHT AND BE READY FOR POSSIBLE ACTIVATION AGAIN WEDNESDAY AFTERNOON AND EVENING ACROSS THE EXTREME WESTERN SECTIONS OF THE PANHANDLES. SCHNEIDER
In the hours before
Local storm report, Aug 10, 8:57 PM CDT, 2 hours 45 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
857 PM CDT TUE AUG 10 2004
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION...ST.. ...SOURCE....
..REMARKS..
0825 PM HAIL 5 W ADRIAN 35.27N 102.76W
08/10/2004 0.75 INCH OLDHAM TX TRAINED SPOTTER
0825 PM TSTM WND DMG 5 W ADRIAN 35.27N 102.76W
08/10/2004 OLDHAM TX TRAINED SPOTTER
ROOF BLOWN OFF CAR PORT BY 60 MPH WINDS
&&
DHSpecial weather statement, Aug 10, 9:30 PM CDT, 2 hours 12 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AMARILLO TX 930 PM CDT TUE AUG 10 2004 TXZ012-017-110330- POTTER-RANDALL- 930 PM CDT TUE AUG 10 2004 ...STRONG THUNDERSTORMS ACROSS POTTER AND RANDALL COUNTIES... STRONG THUNDERSTORMS MOVING ACROSS AMARILLO AND CANYON ARE PRODUCING WIND GUSTS UP TO 45 MPH...SMALL HAIL UP TO PEA SIZE...AND FREQUENT LIGHTNING. THESE STORMS ARE MOVING TOWARDS THE EAST SOUTHEAST AT 25 MPH AND WILL CONTINUE TO AFFECT AMARILLO...CANYON...AND PALO DURO CANYON STATE PARK THROUGH 1030 PM. RAINFALL AMOUNTS OF UP TO ONE HALF OF AN INCH...WITH ISOLATED THREE QUARTER INCH AMOUNTS ARE POSSIBLE. JORDAN
The office that day
Everything else NWS Amarillo, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 11, 12:19 AM CDT | Severe Thunderstorm Warning | AMA | Texas | 56 min |
| Aug 11, 1:18 AM CDT | Severe Thunderstorm Warning | AMA | Beaver, Texas | 57 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 2004Every severe thunderstorm warning in 2004
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.