Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 39, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Mar 30, 1998, 6:14 PM CST for Muskogee County, Oklahoma. It was in force for 46 min. 3 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Mar 30, 1998, 6:14 PM CST (00:14 UTC)
- Expired
- Mar 30, 1998, 7:00 PM CST
- In force
- 46 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
County Muskogee County, OK
The radar
The Tulsa radar (KINX), 64 km from the middle of the area, began a volume at 00:14 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 |
|---|---|---|---|
| Mar 30, 6:44 PM CST | Thunderstorm Wind 52 | Muskogee, OK | |
| Mar 30, 6:46 PM CST | Hail 0.88 | Warner, OK | |
| Mar 30, 7:00 PM CST | Hail 0.88 | Keefeton, OK |
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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Mar 30, 1:00 PM CST | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Norman, OK (KOUN), launched 00:00Z, 0.2 hours before the alert went out and 188 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 672 m above ground
- 0-6 km bulk shear
- 92 kt
- 0-1 km storm-relative helicity
- -325 m²/s²
- 0-3 km storm-relative helicity
- -26 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KTUL 310014 RRA SVRTUL OKC101-310100- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 614 PM CST MON MAR 30 1998 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 700 PM CST FOR PEOPLE IN THE FOLLOWING LOCATION... IN EAST CENTRAL OKLAHOMA ...MUSKOGEE COUNTY AT 610 PM...DOPPLER RADAR SHOWED TWO SEVERE THUNDERSTORMS. ONE STORM WAS JUST NORTHWEST OF EUFAULA AND THE OTHER 5 MILES SOUTHWEST OF EUFAULA. BOTH STORMS WERE MOVING NORTHEAST AT 55 MPH. WARNER...WEBBERS FALLS AND GORE ARE IN THE PATH OF THESE STORMS. HAIL TO THE SIZE OF NICKELS AND WIND GUSTS TO 65 MPH CAN BE EXPECTED IN THE WARNED AREA. A T@ORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER... SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. REMAIN CALM BUT BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS.
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 Tulsa, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Mar 30, 3:30 PM CST, 2 hours 44 minutes earlier.
Area forecast discussion, Mar 30, 3:30 PM CST, 2 hours 44 minutes before
FPUS3 KTUL 302130 AFDTUL EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 330 PM CST MON MAR 30 1998 PARAMETERS IN PLACE FOR SEVERE WEATHER TO CONTINUE THROUGH THE NIGHT OVER MOST AREAS. INSTABILITY IS HIGHER THAN WEVE SEEN SO FAR THIS MONTH ABOUT 1500 J/KG...THIS AND 100+ KT H5 WINDS IN PLACE SUGGEST SUPERCELL STORMS WILL BE POSSIBLE EVEN THOUGH CURRENT ACTIVITY IS MOSTLY LINEAR AND MULTICELLULAR. STORMS SE OF KOKC SHOWING SIGNS OF MORE EWD MOVEMENT AND APPEAR LESS LINEAR...THESE STORMS HAVE ALSO HAD THE HIGHEST REFLECTIVITIES/VILS AND LIKELY HAVE STRONGER UPDAFTS. AROUND SUNSET...SFC WINDS SHOULD BACK...ESP E AND NE OF SFC LOW WHICH IS CURRENTLY SW OF KOKC. WILL CONT TO MONITOR SITUATION CLOSELY. NEAR CAT POPS EXPECTED TONIGHT...MUCH MORE THAN WOEFUL FWC GUID WHICH HAS A 13 POP FOR KMLC. OBVIOUSLY SIDING WITH ETA AND CURRENT RADAR TRENDS FOR THIS PKG. STORMS SHOULD END OVER WRN ZONES A LITTLE AFTER MIDNIGHT AND BY MID MORNING OVER FAR ERN ZONES. COULD SEE LINGERING LT OR ELEVATED PRECIP DURING THE DAY TOMORROW OVER NRN ZONES AS UPR S/W LIFTS OUT TO OUR N BUT OTHERWISE...POPS FOR TUE ONLY FOR LINGERING SHRA IN THE MORNING OVER ERN ZONES IF ANY. AFTER THIS SYS GOES BY...LOOKS CLEAR FOR A FEW DAYS. NEXT CHC OF SHRA/TSRA LOOKS LIKE THUR WITH UPR LOW MOVING ACROSS PLAINS. THIS SYS DOES NOT LOOK AS STRONG AND SHOULD PASS WELL TO OUR N...MOISTURE MAY BE HARDER TO GET AND DRY SLOTTING ALWAYS COMMON WITH SYSTEMS MOVING WELL N OF US. WILL LEAVE POPS IN CHC CAT. FCSTID = 26 TUL 51 65 40 73 / 100 0 0 0 FSM 55 69 40 75 / 100 30 0 0 MLC 53 71 39 73 / 100 10 0 0 BVO 46 62 38 72 / 100 0 0 0 FYV 53 65 39 69 / 80 20 0 0 IDB 55 73 40 74 / 80 30 0 0 BYV 53 65 39 69 / 80 20 0 0 MIO 52 65 40 71 / 100 10 0 0 MKO 52 68 40 74 / 100 10 0 0 F10 51 65 40 73 / 100 0 0 0 HHW 55 73 40 74 / 80 30 0 0 .TUL... OK...TORNADO WATCH UNTIL 800 PM CST FOR ZONES OKZ049...OKZ053>068... OKZ070>071...OKZ073>075. AR...NONE.
In the hours before
Special weather statement, Mar 30, 1:00 PM CST, 5 hours 14 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-311200- EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 100 PM CST MON MAR 30 1998 A FEW SEVERE THUNDERSTORMS ARE EXPECTED ACROSS EASTERN OKLAHOMA AND NORTHWEST ARKANSAS THIS AFTERNOON AND EVENING. A TORNADO WATCH IS IN EFFECT FOR A LARGE PORTION OF EASTERN OKLAHOMA UNTIL 800 PM. SURFACE LOW PRESSURE WAS CENTERED OVER CENTRAL OKLAHOMA EARLY THIS AFTERNOON. A DRYLINE TRAILED SOUTH FROM THE LOW INTO NORTH CENTRAL TEXAS. IN THE MEANTIME...A STRONG UPPER LEVEL STORM SYSTEM CENTERED OVER THE SOUTHERN ROCKIES THIS MORNING WILL MOVE SLOWLY NORTHEASTWARD INTO WESTERN KANSAS THIS EVENING. THE AIRMASS EAST OF THE DRYLINE HAS BECOME VERY UNSTABLE EARLY THIS AFTERNOON. AT THE SAME TIME...THE LAYER OF WARM AIR ALOFT WHICH HAD BEEN CAPPING ANY CONVECTIVE DEVELOPMENT HAS WEAKENED. DUE TO THE STRENGTH OF THE APPROACHING STORM SYSTEM...A SIGNIFICANT SEVERE WEATHER EVENT APPEARS POSSIBLE. EARLY THIS AFTERNOON...STRONG THUNDERSTORMS HAD ALREADY DEVELOPED IN PARTS OF CENTRAL OKLAHOMA. THERE IS A CHANCE OF SUPERCELL DEVELOPMENT THIS AFTERNOON WEST OF HIGHWAY 75 IN EASTERN OKLAHOMA. LATER THIS EVENING...THE STORMS WILL ORGANIZE INTO A LINE. IF THEY ORGANIZE INTO A SOLID LINE...THE CHANCES FOR A SUPERCELL WOULD DECREASE. NEVERTHELESS...THERE IS A MODERATE TO HIGH POTENTIAL FOR THESE STORMS TO BECOME SEVERE. DAMAGING WINDS...LARGE HAIL AND TORNADOES WILL ALL BE POSSIBLE WITH THE STORMS GIVEN THE FORECAST WIND PROFILES. DURING THE NIGHTTIME HOURS...INSTABILITY WILL BE LESSENING DUE TO THE LOSS OF DAYTIME HEATING AND WEAKENING OF THE DRYLINE. HOWEVER...A FEW SEVERE THUNDERSTORMS WILL STILL LIKELY OCCUR IN NORTHWEST ARKANSAS AND EXTREME EASTERN OKLAHOMA. AGAIN THESE STORMS MAY PRODUCE DAMAGING WINDS...LARGE HAIL AND ISOLATED TORNADOES. THE SEVERE WEATHER THREAT SHOULD END BEFORE 300 AM AS THE UPPER LEVEL STORM LIFTS NORTHEAST AWAY FROM THE AREA. EMERGENCY MANAGEMENT OFFICIALS AND STORM SPOTTER GROUPS IN EASTERN OKLAHOMA AND NORTHWEST ARKANSAS SHOULD PAY CLOSE ATTENTION TO THE WEATHER SITUATION THIS AFTERNOON AND TONIGHT.
Special weather statement, Mar 30, 1:00 PM CST, 5 hours 14 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-311200- EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 100 PM CST MON MAR 30 1998 A FEW SEVERE THUNDERSTORMS ARE EXPECTED ACROSS EASTERN OKLAHOMA AND NORTHWEST ARKANSAS THIS AFTERNOON AND EVENING. A TORNADO WATCH IS IN EFFECT FOR A LARGE PORTION OF EASTERN OKLAHOMA UNTIL 800 PM. SURFACE LOW PRESSURE WAS CENTERED OVER CENTRAL OKLAHOMA EARLY THIS AFTERNOON. A DRYLINE TRAILED SOUTH FROM THE LOW INTO NORTH CENTRAL TEXAS. IN THE MEANTIME...A STRONG UPPER LEVEL STORM SYSTEM CENTERED OVER THE SOUTHERN ROCKIES THIS MORNING WILL MOVE SLOWLY NORTHEASTWARD INTO WESTERN KANSAS THIS EVENING. THE AIRMASS EAST OF THE DRYLINE HAS BECOME VERY UNSTABLE EARLY THIS AFTERNOON. AT THE SAME TIME...THE LAYER OF WARM AIR ALOFT WHICH HAD BEEN CAPPING ANY CONVECTIVE DEVELOPMENT HAS WEAKENED. DUE TO THE STRENGTH OF THE APPROACHING STORM SYSTEM...A SIGNIFICANT SEVERE WEATHER EVENT APPEARS POSSIBLE. EARLY THIS AFTERNOON...STRONG THUNDERSTORMS HAD ALREADY DEVELOPED IN PARTS OF CENTRAL OKLAHOMA. THERE IS A CHANCE OF SUPERCELL DEVELOPMENT THIS AFTERNOON WEST OF HIGHWAY 75 IN EASTERN OKLAHOMA. LATER THIS EVENING...THE STORMS WILL ORGANIZE INTO A LINE. IF THEY ORGANIZE INTO A SOLID LINE...THE CHANCES FOR A SUPERCELL WOULD DECREASE. NEVERTHELESS...THERE IS A MODERATE TO HIGH POTENTIAL FOR THESE STORMS TO BECOME SEVERE. DAMAGING WINDS...LARGE HAIL AND TORNADOES WILL ALL BE POSSIBLE WITH THE STORMS GIVEN THE FORECAST WIND PROFILES. DURING THE NIGHTTIME HOURS...INSTABILITY WILL BE LESSENING DUE TO THE LOSS OF DAYTIME HEATING AND WEAKENING OF THE DRYLINE. HOWEVER...A FEW SEVERE THUNDERSTORMS WILL STILL LIKELY OCCUR IN NORTHWEST ARKANSAS AND EXTREME EASTERN OKLAHOMA. AGAIN THESE STORMS MAY PRODUCE DAMAGING WINDS...LARGE HAIL AND ISOLATED TORNADOES. THE SEVERE WEATHER THREAT SHOULD END BEFORE 300 AM AS THE UPPER LEVEL STORM LIFTS NORTHEAST AWAY FROM THE AREA. EMERGENCY MANAGEMENT OFFICIALS AND STORM SPOTTER GROUPS IN EASTERN OKLAHOMA AND NORTHWEST ARKANSAS SHOULD PAY CLOSE ATTENTION TO THE WEATHER SITUATION THIS AFTERNOON AND TONIGHT.
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 30, 6:23 PM CST | Tornado Warning | TSA | McIntosh | 37 min |
| Mar 30, 6:32 PM CST | Severe Thunderstorm Warning | TSA | Pushmataha | 43 min |
| Mar 30, 6:40 PM CST | Severe Thunderstorm Warning | TSA | Haskell, Latimer | 50 min |
| Mar 30, 6:46 PM CST | Tornado Warning | TSA | Cherokee, Muskogee | 44 min |
| Mar 30, 6:51 PM CST | Severe Thunderstorm Warning | TSA | Sequoyah | 39 min |
| Mar 30, 6:53 PM CST | Severe Thunderstorm Warning | TSA | Pittsburg | 52 min |
| Mar 30, 6:54 PM CST | Tornado Warning | TSA | Sequoyah | 51 min |
| Mar 30, 7:26 PM CST | Tornado Warning | TSA | Adair, Cherokee | 49 min |
| Mar 30, 7:30 PM CST | Severe Thunderstorm Warning | TSA | Latimer, LeFlore, Pushmataha | 45 min |
| Mar 30, 7:30 PM CST | Severe Thunderstorm Warning | TSA | Haskell | 45 min |
| Mar 30, 7:33 PM CST | Tornado Warning | TSA | Sequoyah | 42 min |
| Mar 30, 7:38 PM CST | Severe Thunderstorm Warning | TSA | Delaware | 52 min |
| Mar 30, 7:58 PM CST | Severe Thunderstorm Warning | TSA | Ottawa | 32 min |
| Mar 30, 8:12 PM CST | Severe Thunderstorm Warning | TSA | LeFlore | 48 min |
| Mar 30, 8:53 PM CST | Severe Thunderstorm Warning | TSA | LeFlore | 22 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 1998Every severe thunderstorm warning in 1998
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.