Alert archive / Ohio / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 149, NWS Wilmington, OH
NWS Wilmington, OH issued this severe thunderstorm warning at Jun 21, 2001, 4:50 PM EDT for Butler County, Warren County, Ohio. It was in force for 55 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
- Jun 21, 2001, 4:50 PM EDT (20:50 UTC)
- Expired
- Jun 21, 2001, 5:45 PM EDT
- In force
- 55 min
- Issued by
- NWS Wilmington, OH
- Area
- Whole counties
Counties Butler County, OH, Warren County, OH
The radar
The Cincinnati radar (KILN), 47 km from the middle of the area, began a volume at 20:54 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 |
|---|---|---|---|
| Jun 21, 5:00 PM EDT | Thunderstorm Wind 50 E | Lebanon, OH | Thunderstorms produced strong winds which knocked down trees and power poles. |
| Jun 21, 5:00 PM EDT | Thunderstorm Wind 50 E | West Chester, OH | Thunderstorms produced strong winds which knocked down trees. |
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 |
|---|---|---|---|
| Jun 21, 4:00 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Cncnati-Daytn, OH (KILN), launched 12:00Z, 8.8 hours before the alert went out and 49 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
- 78 J/kg
- Mixed-layer CIN
- -131 J/kg
- Mixed-layer LCL
- 1189 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 45 m²/s²
- 0-3 km storm-relative helicity
- 49 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
121 WUUS51 KILN 212054 SVRILN OHC017-165-212145- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE WILMINGTON OH 450 PM EDT THU JUN 21 2001 THE NATIONAL WEATHER SERVICE IN WILMINGTON HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... WARREN COUNTY IN OHIO... BUTLER COUNTY IN OHIO... * UNTIL 545 PM EDT... * AT 450 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 4 MILES EAST OF FAIRFIELD...OR ABOUT OVER SPRINGDALE...MOVING EAST AT 45 MPH. * SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... MORROW... MONROE... WEST CHESTER... MASON... LEBANON... FAIRFIELD... IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY SHELTER AWAY FROM CREEK BEDS AND OTHER FLOOD PRONE AREAS. REMEMBER...A SEVERE THUNDERSTORM CAN PRODUCE LARGE DAMAGING HAIL...DAMAGING WINDS IN EXCESS OF 55 MPH...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
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 Wilmington, OH wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 21, 3:45 PM EDT, 1 hour 5 minutes earlier.
Area forecast discussion, Jun 21, 3:45 PM EDT, 1 hour 5 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE WILMINGTON OH 345 EDT THU JUN 21 2001 WILL SEND OUT A QUICK UPDATE TO INCLUDE PARTS OF WEST CENTRAL AND CENTRAL OHIO IN SEVERE THUNDERSTORM WATCH 463. ...PREVIOUS DISCUSSION... LATEST SFC ANALYSIS DEPICTED LOW PRESSURE CENTERED NEAR INDIANAPOLIS WITH A COLD FRONT EXTENDING SOUTHWEST INTO S CNTRL IL AND ERN MO. THIS WAS FAIRLY CLOSE TO THE 12Z MESO ETA RUN. UPR LVL TROF AND ASSOCIATED VORT MAX OVER NRN MO...AS DEPICTED BY WATER VAPOR...WAS RESPONSIBLE FOR THE SFC LOW PERTURBATION AT INDY. FAVORABLE UPR LVL DIV COMBINED WITH SFC HEATING/MOIST AIRMASS/MOIST LOW LVL CONV WILL CONTINUE SHOWERS/TSTMS ACRS THE REGION THRU THE EVENING HOURS. COLD FRONT WILL BE SLOW TO MOVE EAST AS UPR LVL TROF IS STILL DIGGING ATTM. FRONT SHOULD PASS THROUGH WRN CWFA BETWEEN MIDNIGHT EDT AND 2 AM EDT...AND ERN CWFA BETWEEN 4 AM EDT AND 8 AM EDT. WIDESPREAD THUNDERSTORMS SHOULD HEAD OFF TO THE EAST AND/OR WEAKEN ONCE THE SUN GOES DOWN. WILL WORD FCST AS DECREASING OR TAPERING TO SCATTERED SHOWERS OVERNIGHT. FOR FRIDAY...UPR LVL TROF AXIS STILL DOES NOT MOVE THROUGH THE REGION. SKIES SHOULD BE MOSTLY CLOUDY TO CLOUDY DURING THE MORNING HOURS AS RAINFALL AND COOLING BEHIND THE FRONT SHOULD TRAP LOWER CLOUD CEILINGS ACRS THE CWFA. BY AFTN...LOW CLOUDS SHOULD MIX OUT...LEAVING PARTLY CLOUDY SKIES. SINCE THERE IS A LACK OF LOW LVL FOCUSING AND/OR UPR DIV...I WOULD BE INCLINED TO LEAVE FCST DRY. HOWEVER...FCST MODEL SOUNDINGS INDICATED A SMALL CHANCE OF A SHOWER/TSTM DEVELOPING DURING THE LATE AFTN IF FCST MAXES ARE REACHED. THUS...WILL INCLUDE AN AFTN WORDING OF SHOWERS/TSTMS. ANY SHOWER/TSTM ACTIVITY THAT DEVELOPS FRIDAY AFTN SHOULD DISSIPATE BY SUNSET...LEAVING PARTLY CLOUDY SKIES. UPR TROUGH STILL HANGS ACRS THE GREAT LAKES/OHIO VLY ON SATURDAY. AGAIN...THERE IS A LACK OF LOW LVL FORCING/UPR LVL DIV. HOWEVER...MODEL SOUNDINGS AGAIN INDICATE THAT A SHOWER OR THUNDERSTORM COULD POP UP LATE IN THE DAY. LONG RANGE MODELS SHOW UPR TROF CUTTING OFF BY EARLY NEXT WEEK. .ILN...NONE. HICKMAN
The office that day
Everything else NWS Wilmington, OH issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 1:43 PM EDT | Severe Thunderstorm Warning | ILN | Adams | 47 min |
| Jun 21, 3:47 PM EDT | Severe Thunderstorm Warning | ILN | Hocking | 43 min |
| Jun 21, 4:38 PM EDT | Severe Thunderstorm Warning | ILN | Hamilton | 52 min |
| Jun 21, 5:23 PM EDT | Severe Thunderstorm Warning | ILN | Clinton | 67 min |
| Jun 21, 5:35 PM EDT | Severe Thunderstorm Warning | ILN | Greene | 40 min |
| Jun 21, 5:57 PM EDT | Severe Thunderstorm Warning | ILN | Fayette | 48 min |
| Jun 21, 6:10 PM EDT | Severe Thunderstorm Warning | ILN | Madison | 50 min |
Nearby
Severe Thunderstorm Warnings in Ohio, 2001Every severe thunderstorm warning in 2001
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.