Alert archive / Illinois / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 257, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Jun 23, 2000, 8:11 PM CDT for Madison County, Illinois. It was in force for 49 min. 2 reports came from inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.
The facts
- Issued
- Jun 23, 2000, 8:11 PM CDT (01:11 UTC)
- Expired
- Jun 23, 2000, 9:00 PM CDT
- In force
- 49 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Madison County, IL
The radar
The St Louis radar (KLSX), 61 km from the middle of the area, began a volume at 01:14 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 |
|---|---|---|---|
| Jun 23, 8:40 PM CDT | Hail 0.75 | Wood River, IL | Amateur radio spotters reported 3/4 inch hail. |
| Jun 23, 9:05 PM CDT | Thunderstorm Wind 56 E | Edwardsville, IL | Local law enforcement reported trees down on the north and east sides of the city. |
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 23, 8:00 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 1.2 hours before the alert went out and 308 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
- 6 J/kg
- Mixed-layer CIN
- -205 J/kg
- Mixed-layer LCL
- 667 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 70 m²/s²
- 0-3 km storm-relative helicity
- 195 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KLSX 240112 SVRSTL ILC119-240200- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 811 PM CDT FRI JUN 23 2000 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... MADISON COUNTY IN SOUTHWEST ILLINOIS * UNTIL 900 PM CDT * AT 811 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER WORDEN...MOVING SOUTHEAST AT 30 MPH. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MPH... DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. THIS STORM HAS A HISTORY OF DAMAGING WINDS. TAKE SHELTER IN A STURDY BUILDING IMMEDIATELY. THE PRIMARY THREAT POSED BY THIS STORM IS DAMAGING WINDS. MOVE QUICKLY TO THE INTERIOpR PORTION OF A STURDY SHELTER...AND STAY AWAY FROM OUTSIDE WALLS AND WINDOWS. LAT...LON 3901 9032 3868 9017 3867 8961 3899 8966 RP
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 St. Louis, MO wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 23, 3:35 PM CDT, 4 hours 36 minutes earlier.
Area forecast discussion, Jun 23, 3:35 PM CDT, 4 hours 36 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE ST LOUIS MO 335 PM CDT FRI JUN 23 2000 IN LAST AFD MENTIONED THINKING ABOUT INCREASING POPS FOR BOTH SATURDAY AND SUNDAY. HAVE DECIDED ON FFA FOR MUCH OF CWFA BASED ON LATEST QPFERD PRODUCT AND COORD WITH SURROUNDING OFFICES. MSAS CONTINUES TO SHOW LI VALUES NEAR -10 AHEAD OF ONGOING CONVECTION AND RUC KEEPS THESE VALUES GOING INTO THE NIGHT. MODEL PRECIP FIELDS NOT IN AGREEMENT BUT ALL SUPPORT POSSIBILITY OF A HEAVY PRECIP EVENT THIS EVENING ACROSS NERN MO/SWRN IL AND OVERNIGHT ACROSS CENTRAL MISSOURI INTO AND NE OF STL METRO AREA. AS FOR THE WEEKEND...WILL NOT TRY TO TIME THE MOVEMENT AND INTERACTION OF SEVERAL SHORTWAVES...SFC TROFS...AND OUTFLOW BOUNDARIES. ALL MODELS KEEP A SFC FRONT WELL NW OF CWFA EVEN BY SUN MORNING...SO WILL KEEP PRECIP MENTION INTO MONDAY. LITTLE CHANGE TO HIGHS/LOWS AND LATER PERIODS. COORD WITH EAX...SGF...ILX...DVN. .STL...FLASH FLOOD WATCH FOR PORTIONS OF SOUTHWEST ILLINOIS AND CENTRAL...NORTHEAST...AND EAST CENTRAL MISSOURI TONIGHT. SEVERE THUNDERSTORM WATCH 483 FOR NORTHEAST AND EAST CENTRAL MISSOURI AND SOUTHWEST ILLINOIS UNTIL 800 PM. LENNING
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 23, 7:12 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun | 48 min |
| Jun 23, 7:30 PM CDT | Severe Thunderstorm Warning | LSX | Jersey | 45 min |
| Jun 23, 7:43 PM CDT | Severe Thunderstorm Warning | LSX | Macoupin | 47 min |
| Jun 23, 8:00 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun | 45 min |
| Jun 23, 8:07 PM CDT | Severe Thunderstorm Warning | LSX | Adams | 38 min |
| Jun 23, 8:17 PM CDT | Severe Thunderstorm Warning | LSX | Greene, Jersey | 43 min |
| Jun 23, 8:45 PM CDT | Severe Thunderstorm Warning | LSX | Adams | 45 min |
| Jun 23, 8:49 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun | 41 min |
| Jun 23, 8:59 PM CDT | Severe Thunderstorm Warning | LSX | Madison | 46 min |
| Jun 23, 9:38 PM CDT | Severe Thunderstorm Warning | LSX | Marion | 52 min |
| Jun 23, 9:49 PM CDT | Severe Thunderstorm Warning | LSX | Madison | 41 min |
| Jun 23, 11:01 PM CDT | Severe Thunderstorm Warning | LSX | Marion | 44 min |
| Jun 24, 1:59 AM CDT | Flash Flood Warning | LSX | Calhoun, Clinton, Jersey, Madison, Marion, Saint Clair and 1 more | 4 hr |
| Jun 24, 5:20 AM CDT | Flash Flood Warning | LSX | Calhoun, Clinton, Jersey, Madison, Marion, Saint Clair and 1 more | 4 hr |
| Jun 24, 9:00 AM CDT | Flash Flood Warning | LSX | Clinton, Marion, Saint Clair, Washington | 4 hr |
| Jun 24, 2:08 PM CDT | Severe Thunderstorm Warning | LSX | Monroe, Saint Clair | 52 min |
| Jun 24, 2:51 PM CDT | Severe Thunderstorm Warning | LSX | Saint Clair | 39 min |
| Jun 24, 3:13 PM CDT | Severe Thunderstorm Warning | LSX | Jersey, Macoupin | 47 min |
| Jun 24, 3:23 PM CDT | Severe Thunderstorm Warning | LSX | Clinton | 52 min |
| Jun 24, 3:36 PM CDT | Severe Thunderstorm Warning | LSX | Bond | 39 min |
| Jun 24, 3:43 PM CDT | Severe Thunderstorm Warning | LSX | Montgomery | 47 min |
| Jun 24, 3:52 PM CDT | Tornado Warning | LSX | Clinton | 23 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 2000Every severe thunderstorm warning in 2000
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.