Alert archive / Arkansas / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 306, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Aug 14, 1997, 4:46 PM CDT for Madison County, Arkansas. It was in force for 29 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 14, 1997, 4:46 PM CDT (21:46 UTC)
- Expired
- Aug 14, 1997, 5:15 PM CDT
- In force
- 29 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
County Madison County, AR
The nearest sounding before it
Springfield, MO (KSGF), launched 12:00Z, 9.8 hours before the alert went out and 99 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
- 1052 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 164 m²/s²
- 0-3 km storm-relative helicity
- 168 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 142147 SVRTUL ARC087-142215- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 446 PM CDT THU AUG 14 1997 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 515 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN NORTHWEST ARKANSAS ...NORTHERN MADISON COUNTY AT 442 PM...RADAR INDICATED A SEVERE THUNDERSTORM 1 MILE NORTHEAST OF FORUM MOVING EAST AT 25 MPH. THIS STORM WILL TRACK ALONG NEARLY THE SAME AS THE PREVIOUS STORM AFFECTING PERSONS NEAR AND TO THE EAST OF FORUM. HAIL TO THE SIZE OF GOLFBALLS AND WIND GUSTS TO 60 MPH CAN BE EXPECTED IN THE WARNED AREA. KEEP TUNED TO THIS STATION FOR THE LATEST WEATHER BULLETINS.
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 Aug 14, 3:45 PM CDT, 1 hour 1 minute earlier.
Area forecast discussion, Aug 14, 3:45 PM CDT, 1 hour 1 minute before
FPUS3 KTUL 142045 AFDTUL EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 345 PM CDT THU AUG 14 1997 TWO CONSTANTS UNTIL THE EXTENDED PART OF THE FORECAST ARE THAT THERE WILL BE AN UPPER TROUGH OVER THE UPPER MIDWEST AND A SURFACE TROUGH SOMEWHERE IN THE PLAINS. THE SOUTHERN EXTENT OF THE FORMER MAY RESULT IN A SERIES OF SHORTWAVES MOVING NEAR OR OVER THE AREA. THE LATTER WILL RESULT IN STRONG WINDS. HAVE KEPT THUNDERSTORM CHANCES TO A MINIMUM AS TIMING AND PLACEMENT OF SHORTWAVES...AND THE EXTENT OF ANY CAP ARE IN QUESTION. ONE THING NOT IN QUESTION WILL BE INSTABILITY. ETA GRIDDED DATA SHOWS CONSTANT -6 BEST LIFTED INDEXES ALIGNED ALONG SURFACE TROUGH WHILE THE NGM SHOWS K INDEXES IN THE LOWER TO MID 30S IN A SIMILAR AREA. HAVE SEEN SOME ISOLATED SHOWERS AND THUNDERSTORMS POP UP THIS AFTERNOON AND COULD SEE THEM ALMOST ANYWHERE INTO THE EVENING HOURS. FOR LATER TONIGHT INTO TOMORROW MORNING COULD SEE THE SOUTHERN TIP OF A SHORTWAVE MOVING THROUGH THE CENTRAL PLAINS KICK SOMETHING OFF. HOWEVER...THINK CURRENT DAY 1 SEVERE OUTLOOK IS OVERDONE. LATER TOMORROW AND TOMORROW NIGHT EITHER A SHEARED OFF PIECE OF TONIGHTS CENTRAL PLAINS SHORTWAVE OR A NEW SHORTWAVE IS PROGGED BY BOTH THE NGM AND THE ETA TO BE IN THE NEIGHBORHOOD. AVN AND LAST NIGHTS MRF SHOW A RIPPLE IN THE AREA LATE SATURDAY AND SATURDAY NIGHT. TEMPERATURE WISE HAVE GONE NEAR OR A LITTLE BELOW GUIDANCE FOR TONIGHT AS THINK SURFACE WINDS WILL SLACK OFF A BIT. HAVE GONE NEAR OR A LITTLE WARMER THAN TONIGHT TOMORROW NIGHT AS PRESSURE GRADIENT TIGHTENS. WITH A SOUTHWEST COMPONENT TO THE SURFACE WINDS SHOULD SEE A GOOD WARMUP EACH DAY AND HAVE GONE NEAR OR ABOVE GUIDANCE FOR HIGHS. FCSTID = 17 TUL 75 93 75 93 / 20 20 20 20 FSM 72 95 74 95 / 20 20 20 20 MLC 75 95 75 95 / 20 20 20 20 BVO 73 93 75 93 / 20 20 20 20 FYV 70 91 73 92 / 20 20 20 20 IDB 73 95 73 95 / 20 20 20 20 BYV 69 90 72 91 / 20 20 20 20 MIO 73 90 74 93 / 20 20 20 20 MKO 74 93 75 94 / 20 20 20 20 F10 74 94 74 94 / 20 20 20 20 .TUL... OK...NONE. AR...NONE. ABBAS
In the hours before
Special weather statement, Aug 14, 1:00 PM CDT, 3 hours 46 minutes before
ARZ001-002-010-011-019-029-OKZ054>076-151200- EASTERN OKLAHOMA/NORTHWEST ARKANSAS THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 100 PM CDT THU AUG 14 1997 NO THUNDERSTORMS ARE EXPECTED ACROSS EASTERN OKLAHOMA OR NORTHWEST ARKANSAS THROUGH TONIGHT. A WARM FRONT...WHICH BROUGHT SCATTERED SHOWERS AND THUNDERSTORMS TO PARTS OF THE AREA AS IT MOVED NORTH OVERNIGHT AND THIS MORNING... HAS LOST ITS IDENTITY THIS AFTERNOON. THE AIR MASS OVER THE AREA THIS AFTERNOON IS FAIRLY WARM AND HUMID...AND THUS IS MODERATELY UNSTABLE. HOWEVER...DUE TO THE COMBINATION OF SUBSIDING AIR IN THE WAKE OF THE STORMS...A LAYER OF WARM AIR IN THE MID-LEVELS OF THE ATMOSPHERE DEVELOPING ACROSS THE REGION AND THE LACK OF ANY NEARBY SURFACE BOUNDARIES...NO THUNDERSTORMS ARE EXPECTED THROUGH TONIGHT ACROSS EASTERN OKLAHOMA AND NORTHWEST ARKANSAS.
Special weather statement, Aug 14, 1:15 PM CDT, 3 hours 31 minutes before
ARZ001-002-010-011-019-029-OKZ054>076-151200- EASTERN OKLAHOMA/NORTHWEST ARKANSAS THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 100 PM CDT THU AUG 14 1997 NO THUNDERSTORMS ARE EXPECTED ACROSS EASTERN OKLAHOMA OR NORTHWEST ARKANSAS THROUGH TONIGHT. A WARM FRONT...WHICH BROUGHT SCATTERED SHOWERS AND THUNDERSTORMS TO PARTS OF THE AREA AS IT MOVED NORTH OVERNIGHT AND THIS MORNING... HAS LOST ITS IDENTITY THIS AFTERNOON. THE AIR MASS OVER THE AREA THIS AFTERNOON IS FAIRLY WARM AND HUMID...AND THUS IS MODERATELY UNSTABLE. HOWEVER...DUE TO THE COMBINATION OF SUBSIDING AIR IN THE WAKE OF THE STORMS...A LAYER OF WARM AIR IN THE MID-LEVELS OF THE ATMOSPHERE DEVELOPING ACROSS THE REGION AND THE LACK OF ANY NEARBY SURFACE BOUNDARIES...NO THUNDERSTORMS ARE EXPECTED THROUGH TONIGHT ACROSS EASTERN OKLAHOMA AND NORTHWEST ARKANSAS.
Special weather statement, Aug 14, 4:30 PM CDT, 16 minutes before
ARZ001-002-010-011-019-029-OKZ054>076-151200- EASTERN OKLAHOMA/NORTHWEST ARKANSAS THUNDERSTORM OUTLOOK...UPDATED NATIONAL WEATHER SERVICE TULSA OK 430 PM CDT THU AUG 14 1997 ISOLATED SEVERE THUNDERSTORMS WILL OCCUR THIS AFTERNOON AND THIS EVENING IN PARTS OF NORTHWEST ARKANSAS AND SOUTHEAST OKLAHOMA. THE RISK OF SEVERE STORMS IS SOUTH AND EAST OF A LINE FROM PEA RIDGE TO FORT SMITH TO MCALESTER. AN UPPER LEVEL WEATHER DISTURBANCE COMBINED WITH A MOIST AND EXTREMELY UNSTABLE AIRMASS HAS RESULTED IN RAPID THUNDERSTORM DEVELOPMENT THIS AFTERNOON IN NORTHWEST ARKANSAS AND SOUTHEAST OKLAHOMA. THE DISTURBANCE TRIGGERING THE STORMS IS MOVING QUICKLY EAST AND IS EXPECTED TO BE WELL INTO ARKANSAS AND SOUTHERN MISSOURI BY 7PM...SHIFTING THE BEST SUPPORT FOR SEVERE STORMS OUT OF THE REGION THIS EVENING. ANY STORMS THAT LINGER IN THE AREA BEHIND THE DISTURBANCE WILL DISSIPATE DURING AS THE AIRMASS STABILIZES AROUND SUNSET. WIND SPEEDS ALOFT ARE SOMEWHAT STRONG FOR THIS TIME OF YEAR...HOWEVER THE OVERALL WIND PATTERN ALOFT SUGGESTS THE MAIN THREAT FROM THESE STORMS WILL BE LARGE HAIL AND STRONG WINDS. EMERGENCY MANAGEMENT AGENCIES AND STORM SPOTTER GROUPS IN THE RISK AREA SHOULD BE ALERT FOR RAPIDLY CHANGING LOCAL CONDITIONS AND BE READY FOR ACTIVATION.
Special weather statement, Aug 14, 4:30 PM CDT, 16 minutes before
ARZ001-002-010-011-019-029-OKZ054>076-151200- EASTERN OKLAHOMA/NORTHWEST ARKANSAS THUNDERSTORM OUTLOOK...UPDATED NATIONAL WEATHER SERVICE TULSA OK 430 PM CDT THU AUG 14 1997 ISOLATED SEVERE THUNDERSTORMS WILL OCCUR THIS AFTERNOON AND THIS EVENING IN PARTS OF NORTHWEST ARKANSAS AND SOUTHEAST OKLAHOMA. THE RISK OF SEVERE STORMS IS SOUTH AND EAST OF A LINE FROM PEA RIDGE TO FORT SMITH TO MCALESTER. AN UPPER LEVEL WEATHER DISTURBANCE COMBINED WITH A MOIST AND EXTREMELY UNSTABLE AIRMASS HAS RESULTED IN RAPID THUNDERSTORM DEVELOPMENT THIS AFTERNOON IN NORTHWEST ARKANSAS AND SOUTHEAST OKLAHOMA. THE DISTURBANCE TRIGGERING THE STORMS IS MOVING QUICKLY EAST AND IS EXPECTED TO BE WELL INTO ARKANSAS AND SOUTHERN MISSOURI BY 7PM...SHIFTING THE BEST SUPPORT FOR SEVERE STORMS OUT OF THE REGION THIS EVENING. ANY STORMS THAT LINGER IN THE AREA BEHIND THE DISTURBANCE WILL DISSIPATE AS THE AIRMASS STABILIZES AROUND SUNSET. WIND SPEEDS ALOFT ARE SOMEWHAT STRONG FOR THIS TIME OF YEAR...HOWEVER THE OVERALL WIND PATTERN ALOFT SUGGESTS THE MAIN THREAT FROM THESE STORMS WILL BE LARGE HAIL AND STRONG WINDS. EMERGENCY MANAGEMENT AGENCIES AND STORM SPOTTER GROUPS IN THE RISK AREA SHOULD BE ALERT FOR RAPIDLY CHANGING LOCAL CONDITIONS AND BE READY FOR ACTIVATION.
Special weather statement, Aug 14, 4:31 PM CDT, 15 minutes before
ARZ001-002-010-011-019-029-OKZ054>076-151200- EASTERN OKLAHOMA/NORTHWEST ARKANSAS THUNDERSTORM OUTLOOK...UPDATED NATIONAL WEATHER SERVICE TULSA OK 430 PM CDT THU AUG 14 1997 ISOLATED SEVERE THUNDERSTORMS WILL OCCUR THIS AFTERNOON AND THIS EVENING IN PARTS OF NORTHWEST ARKANSAS AND SOUTHEAST OKLAHOMA. THE RISK OF SEVERE STORMS IS SOUTH AND EAST OF A LINE FROM PEA RIDGE TO FORT SMITH TO MCALESTER. AN UPPER LEVEL WEATHER DISTURBANCE COMBINED WITH A MOIST AND EXTREMELY UNSTABLE AIRMASS HAS RESULTED IN RAPID THUNDERSTORM DEVELOPMENT THIS AFTERNOON IN NORTHWEST ARKANSAS AND SOUTHEAST OKLAHOMA. THE DISTURBANCE TRIGGERING THE STORMS IS MOVING QUICKLY EAST AND IS EXPECTED TO BE WELL INTO ARKANSAS AND SOUTHERN MISSOURI BY 7PM...SHIFTING THE BEST SUPPORT FOR SEVERE STORMS OUT OF THE REGION THIS EVENING. ANY STORMS THAT LINGER IN THE AREA BEHIND THE DISTURBANCE WILL DISSIPATE DURING AS THE AIRMASS STABILIZES AROUND SUNSET. WIND SPEEDS ALOFT ARE SOMEWHAT STRONG FOR THIS TIME OF YEAR...HOWEVER THE OVERALL WIND PATTERN ALOFT SUGGESTS THE MAIN THREAT FROM THESE STORMS WILL BE LARGE HAIL AND STRONG WINDS. EMERGENCY MANAGEMENT AGENCIES AND STORM SPOTTER GROUPS IN THE RISK AREA SHOULD` BE ALERT FOR RAPIDLY CHANGING LOCAL CONDITIONS AND BE READY FOR ACTIVATION.
Special weather statement, Aug 14, 4:36 PM CDT, 10 minutes before
ARZ001-002-010-011-019-029-OKZ054>076-151200- EASTERN OKLAHOMA/NORTHWEST ARKANSAS THUNDERSTORM OUTLOOK...UPDATED NATIONAL WEATHER SERVICE TULSA OK 430 PM CDT THU AUG 14 1997 ISOLATED SEVERE THUNDERSTORMS WILL OCCUR THIS AFTERNOON AND THIS EVENING IN PARTS OF NORTHWEST ARKANSAS AND SOUTHEAST OKLAHOMA. THE RISK OF SEVERE STORMS IS SOUTH AND EAST OF A LINE FROM PEA RIDGE TO FORT SMITH TO MCALESTER. AN UPPER LEVEL WEATHER DISTURBANCE COMBINED WITH A MOIST AND EXTREMELY UNSTABLE AIRMASS HAS RESULTED IN RAPID THUNDERSTORM DEVELOPMENT THIS AFTERNOON IN NORTHWEST ARKANSAS AND SOUTHEAST OKLAHOMA. THE DISTURBANCE TRIGGERING THE STORMS IS MOVING QUICKLY EAST AND IS EXPECTED TO BE WELL INTO ARKANSAS AND SOUTHERN MISSOURI BY 7PM...SHIFTING THE BEST SUPPORT FOR SEVERE STORMS OUT OF THE REGION THIS EVENING. ANY STORMS THAT LINGER IN THE AREA BEHIND THE DISTURBANCE WILL DISSIPATE AS THE AIRMASS STABILIZES AROUND SUNSET. WIND SPEEDS ALOFT ARE SOMEWHAT STRONG FOR THIS TIME OF YEAR...HOWEVER THE OVERALL WIND PATTERN ALOFT SUGGESTS THE MAIN THREAT FROM THESE STORMS WILL BE LARGE HAIL AND STRONG WINDS. EMERGENCY MANAGEMENT AGENCIES AND STORM SPOTTER GROUPS IN THE RISK AREA SHOULD BE ALhERT FOR RAPIDLY CHANGING LOCAL CONDITIONS AND BE READY FOR ACTIVATION.
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 14, 3:45 PM CDT | Severe Thunderstorm Warning | TSA | Crawford | 30 min |
| Aug 14, 4:18 PM CDT | Severe Thunderstorm Warning | TSA | Madison | 27 min |
| Aug 14, 4:28 PM CDT | Severe Thunderstorm Warning | TSA | Carroll | 47 min |
Nearby
Severe Thunderstorm Warnings in Arkansas, 1997Every severe thunderstorm warning in 1997
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.