Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 208, NWS Amarillo, TX
NWS Amarillo, TX issued this severe thunderstorm warning at Oct 22, 2002, 9:16 PM CDT for Cimarron County, Oklahoma. It was in force for 44 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
- Oct 22, 2002, 9:16 PM CDT (02:16 UTC)
- Expired
- Oct 22, 2002, 10:00 PM CDT
- In force
- 44 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), 164 km from the middle of the area, began a volume at 02:16 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 |
|---|---|---|---|
| Oct 22, 9:48 PM CDT | Hail 0.88 | Griggs, OK | |
| Oct 22, 9:50 PM CDT | Hail 0.75 | Griggs, OK | The hail covered the ground three to four inches deep. |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
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 00:00Z, 2.3 hours before the alert went out and 165 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
- 796 J/kg
- Mixed-layer CIN
- -36 J/kg
- Mixed-layer LCL
- 858 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 116 m²/s²
- 0-3 km storm-relative helicity
- 147 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 2.5
The text
As transmitted, in the capitals the NWS used until 2016.
623 WUUS54 KAMA 230216 SVRAMA OKC025-230300- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE AMARILLO TX 915 PM CDT TUE OCT 22 2002 THE NATIONAL WEATHER SERVICE IN AMARILLO HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHEASTERN CIMARRON COUNTY IN THE PANHANDLE OF OKLAHOMA * UNTIL 1000 PM CDT * AT 915 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 11 MILES WEST OF GRIGGS...OR ABOUT 14 MILES SOUTHEAST OF BOISE CITY...MOVING SOUTHEAST AT 10 MPH. * SOME LOCATIONS AFFECTED BY THE STORM INCLUDE... GRIGGS NICKEL SIZED HAIL...DAMAGING WINDS...AND TORRENTIAL RAINS ARE EXPECTED WITH THIS STORM. TAKE COVER IN A SUBSTANTIAL SHELTER. LAT...LON 3662 10259 3649 10243 3651 10204 3682 10219
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 Oct 22, 3:13 PM CDT, 6 hours 3 minutes earlier.
Area forecast discussion, Oct 22, 3:13 PM CDT, 6 hours 3 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE AMARILLO TX 315 PM CDT TUE 22 OCT 2002 SUBSTANTIAL MSTR IN PLACE ACRS PNHDLS...WITH SFC DWPTS MAINLY IN 50S...WITH LOWER 60S IN SERN ZNS. H8 DWPTS OF 8 TO 11 DEG C NOTED. SFC LOW IN SERN NM WITH INVERTED TROF EXTDG NNEWD THRU WRN ZNS. SFC TROF EXPCD TO BCM ACTIVE THIS EVE AS HIGHLY ENERGIZED SWLY FLOW ALF PVLS...AND LLJ DVLPS OVR ERN HALF OF FCST AREA. CDFNT OVR SRN KS AND SERN CO EXPCD TO MOV INTO OK PNHDL AFT MIDNIGHT...AND THEN CLR TX PNHDL BY NOON WED. LESS THAN 5 DEG F OF WMG CAN BE EXPCD IN NRN ZNS DURG DAY...AND SRN ZNS WL EXPERIENCE ERY HIGHS WITH TEMPS FALLING DURG AFTN AS CAA CONTS. STG CNVGNC ALG CDFNT AND LIFT ALG SLOPING FRONTAL SFC EXPCD TO PRODUCE WSPRD SHRA ON WED. ISENTROPIC UPGLIDE DVLPS ON WED NGT AS COLD SFC RDG BUILDS SWD THRU PNHDLS. WDSPRD -RA EXPCD...WITH PSBLTY OF SLEET MIXING IN OVR OK PNHDL DUE TO COLD AIR INTRUSION. UPSLP FLOW DMSHS ON THU NGT...YET ONGOING PARADE OF SHTWVS IN SWLY FLOW ALF WARRANT CHC POPS FOR -RA. DRIER AIR IS TAPPED FRI THRU SAT NGT...WITH TEMPS MAKING RECOVERY TO 50S AND 60S FRI THRU SUN. NEXT H5 TROF DIGS OVR SWRN U.S. SUN WITH SLGT CHC OR CHC TSTMS SUN THRU MON NGT. FCSTID = 03 AMARILLO 54 56 36 45 / 70 80 80 40 BEAVER 41 44 34 38 / 80 90 90 50 BOISE CITY 40 43 32 39 / 70 70 70 40 BORGER 53 54 36 43 / 70 80 80 40 BOYS RANCH 52 53 34 44 / 60 70 70 40 CANYON 55 57 36 46 / 60 70 80 40 CLARENDON 57 60 39 48 / 70 90 80 40 DALHART 47 49 33 44 / 60 70 70 40 GUYMON 41 44 33 39 / 80 90 80 40 HEREFORD 54 59 36 47 / 60 70 70 40 LIPSCOMB 50 51 37 39 / 80 90 90 50 SHAMROCK 57 59 40 48 / 70 90 90 40 WELLINGTON 58 62 42 50 / 70 90 90 40 .AMA... TX...NONE. OK...NONE. COCKRELL
Hazardous weather outlook, Oct 22, 2:53 PM CDT, 6 hours 23 minutes before
OKZ001>003-TXZ001>020-231100- TEXAS/OKLAHOMA PANHANDLES HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AMARILLO TX 100 PM CDT TUE OCT 22 2002 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE TEXAS AND OKLAHOMA PANHANDLES. .DAY ONE... SCATTERED SEVERE THUNDERSTORMS ARE LIKELY THIS AFTERNOON AND TONIGHT WITH THE GREATEST POTENTIAL ACROSS THE SOUTHERN TEXAS PANHANDLE. THE PRIMARY THREAT WILL BE LARGE HAIL AND DAMAGING WINDS...FOLLOWED BY A SECONDARY THREAT OF LOCALLY HEAVY RAINFALL. .SPOTTER ACTIVATION CALL TO ACTION STATEMENT... SPOTTER ACTIVATION MAY BE NECESSARY THIS AFTERNOON THROUGH TONIGHT. .DAYS TWO THROUGH SEVEN... A STRONG POLAR COLD FRONT WILL MOVE ACROSS THE PANHANDLES EARLY WEDNESDAY WITH THE CHANCE FOR WINTER PRECIPITATION ACROSS THE OKLAHOMA PANHANDLE WEDNESDAY NIGHT. JH
Nearby
Severe Thunderstorm Warnings in Oklahoma, 2002Every severe thunderstorm warning in 2002
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.