Alert archive / Oklahoma / Tornado Warnings in 1993
Tornado Warning 10, NWS Norman, OK
NWS Norman, OK issued this tornado warning at Apr 28, 1993, 6:47 PM CDT for Greer County, Kiowa County, Washita County, Oklahoma. It was in force for 43 min.
The area
The counties it named.
The facts
- Issued
- Apr 28, 1993, 6:47 PM CDT (23:47 UTC)
- Expired
- Apr 28, 1993, 7:30 PM CDT
- In force
- 43 min
- Issued by
- NWS Norman, OK
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Greer County, OK, Kiowa County, OK, Washita County, OK
The radar
The Altus AFB radar (KFDR), 78 km from the middle of the area, began a volume at 23:48 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.
The nearest sounding before it
Fort Sill, OK (KFSI), launched 12:00Z, 11.8 hours before the alert went out and 84 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
- 209 J/kg
- Mixed-layer CIN
- -89 J/kg
- Mixed-layer LCL
- 648 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 36 m²/s²
- 0-3 km storm-relative helicity
- 17 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this tornado 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 tornado warning went out at Apr 28, 3:42 PM CDT, 3 hours 5 minutes earlier.
Area forecast discussion, Apr 28, 3:42 PM CDT, 3 hours 5 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE OKLAHOMA CITY OK 345 PM CDT WED APR 28 1993 OUTFLO FM PREV CONVECTION HAS MADE FNT/INVERTED TROF DIFFICULT TO FIND THIS AFTN...IN ANY CASE EXPECT THIS FEATURE...WHICH IS NOW SOMEWHERE ACRS NRN OK TO WORK SWD AND BE IN THE XTRM SERN PTN OF THE FA BY THU AFTN. MOISTURE STILL STREAMING NWD ATTM AND FNT WL NOT MOV AS FAST AS MOST OF THE PROGS SHOW...THUS HIGH POPS FOR TONIGHT AND SPCLY FOR THE S ON THU. FOR FRI WL CONFINE MENTION OF PCPN TO XTRM SERN ZONES. FPC AND FWC TEMPS IN GOOD AGREEMENT AND WL BE FOLLOWED CLOSELY...THO GUID MINS FOR TNGT LIKELY TOO LOW. PAYNE COUNTY HAS RCVD SOME SUBSTANTIAL RAINFALL TDA...BUT FOR THE SHORT RANGE PCPN HAS NOT MOVD EWD FM THE STILLWATER AREA...RAINFALL TOTALS MUST BE WATCHED CLOSELY IN PAYNE COUNTY SHOULD ADDNL PCPN MOVE IN THIS EVE. OKC 56/68/52/72 7631 GAG 55/65/49/72 4321 PNC 54/65/51/70 7421 SPS 60/72/55/75 5742 .OK...NONE. .TX...NONE.
In the hours before
Special weather statement, Apr 28, 1:35 PM CDT, 5 hours 12 minutes before
OKC119-282300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE OKLAHOMA CITY OK 135 PM CDT WED APR 28 1993 ...A RAPID RISE IS EXPECTED ON STILLWATER CREEK EARLY THIS AFTERNOON... RUNOFF FROM HEAVY RAINFALL THIS MORNING OVER WESTERN PAYNE COUNTY IN THE VICINITY OF CARL BLACKWELL DAM WILL MOVE DOWN STILLWATER CREEK AND SHOULD APPROACH THE CITY OF STILLWATER THIS AFTERNOON. A RAPID RISE ON STILLWATER CREEK TO NEAR BANKFULL IS LIKELY IN THE SOUTHERN AND WESTERN PARTS OF STILLWATER NEAR THE WASHINGTON STREET CROSSING BY MID AFTERNOON. ADDITIONAL RAINFALL IS LIKELY OVER THE STILLWATER CREEK DRAINAGE BASIN DURING THE AFTERNOON. THE RAINFALL THIS MORNING HAS SATURATED THE GROUND OVER THE UPPER PORTION OF THE STILLWATER CREEK DRAINAGE BASIN... AND MUCH OF THE ADDITIONAL RAINFALL WILL RUN OFF QUICKLY. ADDITIONAL HEAVY RAINFALL WILL RESULT IN HIGHER WATER LEVELS IN STILLWATER CREEK AND POSSIBLE FLOODING IN SOUTHERN AND WESTERN PORTIONS OF STILLWATER. STAY TUNED TO NOAA WEATHER RADIO FOR LATER UPDATES AND POSSIBLE WARNINGS. PERSONS WITH PROPERTY NEAR STILLWATER CREEK SHOULD BE PREPARED TO TAKE QUICK ACTION IF HEAVY RAINFALL DEVELOPS OVER WESTERN PAYNE COUNTY.
Special weather statement, Apr 28, 1:37 PM CDT, 5 hours 10 minutes before
OKC119-282300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE OKLAHOMA CITY OK 135 PM CDT WED APR 28 1993 ...A RAPID RISE IS EXPECTED ON STILLWATER CREEK EARLY THIS AFTERNOON... RUNOFF FROM HEAVY RAINFALL THIS MORNING OVER WESTERN PAYNE COUNTY IN THE VICINITY OF CARL BLACKWELL DAM WILL MOVE DOWN STILLWATER CREEK AND SHOULD APPROACH THE CITY OF STILLWATER THIS AFTERNOON. A RAPID RISE ON STILLWATER CREEK TO NEAR BANKFULL IS LIKELY IN THE SOUTHERN AND WESTERN PARTS OF STILLWATER NEAR THE WASHINGTON STREET CROSSING BY MID AFTERNOON. ADDITIONAL RAINFALL IS LIKELY OVER THE STILLWATER CREEK DRAINAGE BASIN DURING THE AFTERNOON. THE RAINFALL THIS MORNING HAS SATURATED THE GROUND OVER THE UPPER PORTION OF THE STILLWATER CREEK DRAINAGE BASIN... AND MUCH OF THE ADDITIONAL RAINFALL WILL RUN OFF QUICKLY. ADDITIONAL HEAVY RAINFALL WILL RESULT IN HIGHER WATER LEVELS IN STILLWATER CREEK AND POSSIBLE FLOODING IN SOUTHERN AND WESTERN PORTIONS OF STILLWATER. STAY TUNED TO NOAA WEATHER RADIO FOR LATER UPDATES AND POSSIBLE WARNINGS. PERSONS WITH PROPERTY NEAR STILLWATER CREEK SHOULD BE PREPARED TO TAKE QUICK ACTION IF HEAVY RAINFALL DEVELOPS OVER WESTERN PAYNE COUNTY.
Local storm report, Apr 28, 6:47 PM CDT, 0 minutes before
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</html>The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 28, 3:32 PM CDT | Severe Thunderstorm Warning | OUN | Cotton | 43 min |
| Apr 28, 4:58 PM CDT | Severe Thunderstorm Warning | OUN | Jackson | 17 min |
| Apr 28, 5:36 PM CDT | Severe Thunderstorm Warning | OUN | Jackson | 39 min |
| Apr 28, 6:00 PM CDT | Severe Thunderstorm Warning | OUN | Beckham | 45 min |
| Apr 28, 6:14 PM CDT | Severe Thunderstorm Warning | OUN | Jackson, Tillman | 46 min |
| Apr 28, 6:34 PM CDT | Tornado Warning | OUN | Beckham | 26 min |
| Apr 28, 6:50 PM CDT | Tornado Warning | OUN | Tillman | 40 min |
Nearby
Tornado Warnings in Oklahoma, 1993Every tornado warning in 1993Tornadoes in 1993
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.