Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 110, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at May 19, 1990, 4:24 PM CDT for Delaware County, Mayes County, Oklahoma. It was in force for 51 min. 2 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
- May 19, 1990, 4:24 PM CDT (21:24 UTC)
- Expired
- May 19, 1990, 5:15 PM CDT
- In force
- 51 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
Counties Delaware County, OK, Mayes County, OK
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 19, 4:30 PM CDT | Hail 0.75 | Mayes, OK | |
| May 19, 5:09 PM CDT | Hail 0.75 | Delaware, 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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Springfield, MO (KUMN), launched 12:00Z, 9.4 hours before the alert went out and 124 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
- 153 J/kg
- Mixed-layer CIN
- -326 J/kg
- Mixed-layer LCL
- 814 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 507 m²/s²
- 0-3 km storm-relative helicity
- 651 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 7.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KTUL 192125 SVRTUL OKC041-097-192215- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 424 PM CDT SAT MAY 19 1990 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 515 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES ... IN NORTHEAST OKLAHOMA ...NORTHERN DELAWARE COUNTY...NORTHERN MAYES COUNTY AT 4 21 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM NEAR LANGLEY MOVING NORTHEAST AT 10 MPH. DISNEY KETCHUM AND GRAND LAKE WILL BE EFFECTED BY THIS STORM. A TORNADO 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 TO 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.
In the hours before
Special weather statement, May 19, 12:47 PM CDT, 3 hours 37 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA, OK
1244 PM CDT SAT MAY 19 1990
...THUNDERSTORMS ARE DEVELOPING RAPIDLY OVER EASTERN OKLAHOMA...
AN AREA OF THUNDERSTORMS IS DEVELOPING OVER EASTERN OKLAHOMA...AND
SOME OF THESE STORMS COULD BECOME SEVERE SHORTLY. THE AREA IS ABOUT
10 MILES WIDE AND EXTENDS ACROSS PORTIONS OF LAKE KEYSTONE NEAR NEW
PRUE NORTHWEST TO SKIATOOK.
THOSE PERSONS OUTDOORS...ESPECIALLY ANY BOATERS ON LAKES KEYSTONE AND
SKIATOOK NEED TO KEEP AN EYE ON THESE STORMS AND SHOULD MOVE TO A SAFE
PLACE IF THREATENING WEATHER APPROACHES.
THESE STORMS WILL BECOME MORE NUMEROUS LATER THIS AFTERNOON...AND WILL
LIKELY BE SEVERE IN SOME AREAS. CIVIL DEFENSE AND SPOTTER GROUPS MAY
WANT TO BEGIN MAKING PREPARATIONS FOR POSSIBLE ACTIVATION THIS AFTERNOON.
STAY TUNED TO NOAA WEATHER RADIO OR COMMERCIAL RADIO AND TELEVISION
FOR LATER STATEMENTS OR POSSIBLE WARNINGS.
]Local storm report, May 19, 1:28 PM CDT, 2 hours 56 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE TULSA, OK
126 PM CDT SAT MAY 19 1990
...DELAYED REPORTS FROM EARLY THIS MORNING MAY 19 1990...
TIME/CDT COUNTY EVENT
245 AM PITTSBURG DIME SIZE HAIL 5 MILES SOUTHWEST OF
SAVANA.Local storm report, May 19, 3:38 PM CDT, 46 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE TULSA, OK
334 PM CDT SAT MAY 19 1990
TIME/CDT COUNTY EVENT
220 PM OSAGE DIME SIZE HAIL 5 MILES NORTHEAST OF NEW PRUE.
242 PM OSAGE QUARTER SIZE HAIL 5 MILES EAST OF NEW PRUE.
305 PM OSAGE NICKEL SIZE HAIL 9 MILES NORTHWEST OF SAND
SPRINGS.The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 19, 2:32 AM CDT | Severe Thunderstorm Warning | TSA | Pittsburg | 43 min |
| May 19, 1:26 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 64 min |
| May 19, 2:54 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 66 min |
| May 19, 3:59 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 61 min |
| May 19, 4:12 PM CDT | Severe Thunderstorm Warning | TSA | Tulsa | 48 min |
| May 19, 4:16 PM CDT | Flash Flood Warning | TSA | Osage | 3 hr |
| May 19, 4:30 PM CDT | Severe Thunderstorm Warning | TSA | Creek, Tulsa | 45 min |
| May 19, 5:02 PM CDT | Severe Thunderstorm Warning | TSA | Osage, Tulsa | 58 min |
| May 19, 5:16 PM CDT | Severe Thunderstorm Warning | TSA | Mayes | 59 min |
| May 19, 5:26 PM CDT | Severe Thunderstorm Warning | TSA | Creek | 64 min |
| May 19, 5:38 PM CDT | Severe Thunderstorm Warning | TSA | Delaware | 67 min |
| May 19, 5:46 PM CDT | Severe Thunderstorm Warning | TSA | Wagoner | 59 min |
| May 19, 6:28 PM CDT | Severe Thunderstorm Warning | TSA | Muskogee, Okmulgee | 62 min |
| May 19, 6:34 PM CDT | Severe Thunderstorm Warning | TSA | Mayes | 56 min |
| May 19, 6:36 PM CDT | Severe Thunderstorm Warning | TSA | Creek | 54 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 1990Every severe thunderstorm warning in 1990
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.