Alert archive / Arkansas / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 346, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Jun 1, 1999, 6:19 AM CDT for Crawford County, Arkansas. It was in force for 41 min. 1 report 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
- Jun 1, 1999, 6:19 AM CDT (11:19 UTC)
- Expired
- Jun 1, 1999, 7:00 AM CDT
- In force
- 41 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
County Crawford County, AR
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 1, 6:35 AM CDT | Hail 0.75 | Van Buren, AR | An isolated early morning thunderstorm produced dime-sized hail in the 5400 block of north AR Hwy 59. |
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 nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 11.3 hours before the alert went out and 151 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
- 141 J/kg
- Mixed-layer CIN
- -159 J/kg
- Mixed-layer LCL
- 1147 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 3 m²/s²
- 0-3 km storm-relative helicity
- 30 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
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 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 Jun 1, 6:00 AM CDT, 19 minutes earlier.
Area forecast discussion, Jun 1, 6:00 AM CDT, 19 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 600 AM CDT TUE JUN 1 1999 PROBLEM(S) OF THE DAY: WILL THERE BE SEVERE CONVECTION? POPS SVR STORMS HAVE KEPT US BUSY. NO DISCUSSION WILL BE ISSUED UNTIL LATER TODAY. FCSTID = 9 TUL 84 64 88 70 / 40 20 10 10 FSM 85 65 89 67 / 50 30 10 10 MLC 83 63 90 71 / 40 20 10 10 BVO 85 61 89 69 / 50 20 10 10 FYV 80 58 84 62 / 60 30 10 10 IDB 86 66 90 68 / 50 30 10 10 BYV 80 58 84 62 / 60 30 10 10 MIO 83 60 86 66 / 40 20 10 10 MKO 84 64 88 70 / 40 20 10 10 F10 84 64 88 70 / 40 20 10 10 HHW 86 66 90 68 / 50 30 10 10 .TUL... AR...NONE. OK...NONE. -------------------- EXPERIMENTAL OUTPUT: HAZARDOUS WEATHER EXPECTED NEXT 24 HOURS: CHANCE SEVERE THUNDERSTORMS NGM CONFIDENCE: 7 ON A SCALE OF 0 TO 10 ETA CONFIDENCE: 8 ON A SCALE OF 0 TO 10 AVN CONFIDENCE: 8 ON A SCALE OF 0 TO 10 FCST CONFIDENCE: 8 ON A SCALE OF 0 TO 10
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 1, 4:32 AM CDT | Severe Thunderstorm Warning | TSA | Okfuskee | 43 min |
| Jun 1, 4:45 AM CDT | Tornado Warning | TSA | Okfuskee | 45 min |
| Jun 1, 5:03 AM CDT | Severe Thunderstorm Warning | TSA | McIntosh, Okmulgee | 57 min |
| Jun 1, 5:12 AM CDT | Tornado Warning | TSA | McIntosh | 63 min |
| Jun 1, 5:53 AM CDT | Tornado Warning | TSA | Haskell, Pittsburg | 67 min |
| Jun 1, 6:04 AM CDT | Severe Thunderstorm Warning | TSA | Sequoyah | 41 min |
| Jun 1, 6:41 AM CDT | Tornado Warning | TSA | Haskell, LeFlore | 64 min |
| Jun 1, 3:56 PM CDT | Severe Thunderstorm Warning | TSA | Delaware, Mayes | 49 min |
| Jun 1, 4:25 PM CDT | Severe Thunderstorm Warning | TSA | Ottawa | 35 min |
| Jun 1, 4:47 PM CDT | Severe Thunderstorm Warning | TSA | Cherokee, Mayes | 43 min |
| Jun 1, 5:06 PM CDT | Severe Thunderstorm Warning | TSA | Wagoner | 39 min |
| Jun 1, 5:12 PM CDT | Tornado Warning | TSA | Cherokee | 33 min |
| Jun 1, 5:36 PM CDT | Tornado Warning | TSA | Cherokee, Muskogee, Wagoner | 54 min |
| Jun 1, 6:22 PM CDT | Severe Thunderstorm Warning | TSA | Pittsburg | 48 min |
| Jun 1, 6:24 PM CDT | Tornado Warning | TSA | McIntosh, Muskogee | 66 min |
| Jun 1, 6:56 PM CDT | Tornado Warning | TSA | Haskell | 49 min |
Nearby
Severe Thunderstorm Warnings in Arkansas, 1999Every severe thunderstorm warning in 1999
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.