Alert archive / Illinois / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 166, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Sep 2, 1993, 6:22 PM CDT for Adams County, Illinois. It was in force for 66 min.
The area
The counties it named.
The facts
- Issued
- Sep 2, 1993, 6:22 PM CDT (23:22 UTC)
- Expired
- Sep 2, 1993, 7:28 PM CDT
- In force
- 66 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Adams County, IL
The radar
The St Louis radar (KLSX), 150 km from the middle of the area, began a volume at 23:25 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.
The nearest sounding before it
Paducah/Barkley, KY (KPAH), launched 12:00Z, 11.4 hours before the alert went out and 390 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
- 343 J/kg
- Mixed-layer CIN
- -103 J/kg
- Mixed-layer LCL
- 1049 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 104 m²/s²
- 0-3 km storm-relative helicity
- 110 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.4
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSTL 022324 SVRSTL ILC001-030030- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 622 PM CDT THU SEP 2 1993 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 730 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN WEST CENTRAL ILLINOIS ...ADAMS COUNTY AT 618 PM CDT...NES DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM ALONG THE LEWIS COUNTY MISSOURI AND ADAMS COUNTY ILLINOIS LINE. THE STORM EXTENDED FROM CANTON TO LA GRANGE AND WAS MOVING EAST AT 30 MILES AN HOUR. THE STORM WAS ABOUT 10 MILES NORTH OF QUINCY. THE STORM WILL MOVE INTO THE TOWNS OF QUINCY...MARCELLINE...URSA AND FOWLER BY 645 PM. THIS STROM PRODUCED POWER OUTAGES IN CANTON AT 615 PM CDT AND DOWNED TREES JUST WEST OF LA GRANGE. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PR2OTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. & JPK
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, Sep 2, 3:50 PM CDT, 2 hours 32 minutes before
MOZ006-009-010-011-013-014-022200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA MO 350 PM CDT THU SEP 2 1993 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 9 PM... AT 345 PM...STRONG THUNDERSTORMS WERE LOCATED NORTH OF COLUMBIA AND SOUTH OF JEFFERSON CITY. THE STORM NORTH OF COLUMBIA WAS LOCATED BETWEEN HARRISBURG AND HALLSVILLE AND WILL MOVE NEAR MEXICO BEFORE 430 PM. THE STORM SOUTH OF JEFFERSON CITY EXTENDED FROM NEAR IBERIA TO LINN. THIS STORM WAS ALSO MOVING EAST AT 25 MILES AN HOUR AND WILL AFFECT BELLE AND OWENSVILLE BETWEEN 400 AND 430 PM. PERSONS IN THE PATH OF THESE STORMS SHOULD TAKE SHELTER INDOORS AND STAY AWAY FROM WINDOWS. BE PREPARED FOR DEADLY LIGHTNING...STRONG WINDS ...HEAVY RAINS AND POSSIBLY SMALL HAIL. THERE IS A CHANCE THAT THESE STORMS COULD BECOME SEVERE AND PRODUCE LARGE HAIL AND DAMAGING WINDS. STAY TUNED TO NWS RADIO OR COMMERCIAL RADIO AND TELEVISION FOR LATER STATEMENTS AND POSSIBLE WARNINGS. STANLEY
Special weather statement, Sep 2, 3:55 PM CDT, 2 hours 27 minutes before
MOZ006-009-010-011-013-014-022200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA MO 350 PM CDT THU SEP 2 1993 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 9 PM... AT 345 PM...STRONG THUNDERSTORMS WERE LOCATED NORTH OF COLUMBIA AND SOUTH OF JEFFERSON CITY. THE STORM NORTH OF COLUMBIA WAS LOCATED BETWEEN HARRISBURG AND HALLSVILLE AND WILL MOVE NEAR MEXICO BEFORE 430 PM. THE STORM SOUTH OF JEFFERSON CITY EXTENDED FROM NEAR IBERIA TO LINN. THIS STORM WAS ALSO MOVING EAST AT 25 MILES AN HOUR AND WILL AFFECT BELLE AND OWENSVILLE BETWEEN 400 AND 430 PM. PERSONS IN THE PATH OF THESE STORMS SHOULD TAKE SHELTER INDOORS AND STAY AWAY FROM WINDOWS. BE PREPARED FOR DEADLY LIGHTNING...STRONG WINDS ...HEAVY RAINS AND POSSIBLY SMALL HAIL. THERE IS A CHANCE THAT THESE STORMS COULD BECOME SEVERE AND PRODUCE LARGE HAIL AND DAMAGING WINDS. STAY TUNED TO NWS RADIO OR COMMERCIAL RADIO AND TELEVISION FOR LATER STATEMENTS AND POS\SIBLE WARNINGS. STANLEY
Special weather statement, Sep 2, 4:30 PM CDT, 1 hour 52 minutes before
MOZ006-009-010-011-014-022230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA MO 430 PM CDT THU SEP 2 1993 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 9 PM... ...STRONG THUNDERSTORMS WERE IN THE NORTHWEST PART OF CENTRAL MISSOURI... STRONG THUNDERSTORMS WERE STRETCHED ACROSS NORTHWEST PARTS OF CENTRAL MISSOURI FROM 35 MILES WEST OF MARSHALL...AROUND LEXINGTON...TO KIRKSVILLE. THE LINE OF THUNDERSTORMS WAS MOVING SOUTHEAST AT 20 MPH AND THE INDIVIDUAL STORMS WERE MOVING EAST AT 30 MPH. BY 530PM...THE THUNDERSTORMS WILL BE FROM MARSHALL TO 30 MILES SOUTH OF KIRKSVILLE..AROUND MACON. PERSONS IN THE COMMUNTITIES OF SLATER... MARSHALL...BRUNSWICK...SALISBURY...BROOKFIELD...MARCELINE AND MACON CAN EXPECT STRONG WINDS TO ABOUT 40 MPH AND VERY HEAVY RAIN THAT REDUCES VISIBILITY AND MAY CAUSE STREET FLOODING..TO OCCUR BETWEEN 430 AND 530 PM. STAY TUNDED TO WEATHER RADAIO OR COMMERCIAL RADIO AND TELEVISION FOR UPDATES OR POSSIBLE WARNINGS. LARM
Special weather statement, Sep 2, 4:38 PM CDT, 1 hour 44 minutes before
MOZ006-009-010-011-014-022230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA MO 430 PM CDT THU SEP 2 1993 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 9 PM... ...STRONG THUNDERSTORMS WERE IN THE NORTHWEST PART OF CENTRAL MISSOURI... STRONG THUNDERSTORMS WERE STRETCHED ACROSS NORTHWEST PARTS OF CENTRAL MISSOURI FROM 35 MILES WEST OF MARSHALL...AROUND LEXINGTON...TO KIRKSVILLE. THE LINE OF THUNDERSTORMS WAS MOVING SOUTHEAST AT 20 MPH AND THE INDIVIDUAL STORMS WERE MOVING EAST AT 30 MPH. BY 530PM...THE THUNDERSTORMS WILL BE FROM MARSHALL TO 30 MILES SOUTH OF KIRKSVILLE..AROUND MACON. PERSONS IN THE COMMUNTITIES OF SLATER... MARSHALL...BRUNSWICK...SALISBURY...BROOKFIELD...MARCELINE AND MACON CAN EXPECT STRONG WINDS TO ABOUT 40 MPH AND VERY HEAVY RAIN THAT REDUCES VISIBILITY AND MAY CAUSE STREET FLOODING..TO OCCUR BETWEEN 430 AND 530 PM. STAY TUNDED TO WEATHER RADAIO OR COMMERCIAL RADIO AND TELEVISION FOR UPDAT ES OR POSSIBLE WARNINGS. LARM
Special weather statement, Sep 2, 5:40 PM CDT, 42 minutes before
MOZ006-009-010-011-014-022340- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA MO 540 PM CDT THU SEP 2 1993 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 9 PM... ...STRONG THUNDERSTORMS CONTINUED TO MOVE TO THE EAST THROUGH THE NORTH SECTIONS OF CENTRAL MISSOURI... AT 535 PM CDT WEATHER RADAR SHOWED STRONG THUNDERSTORMS IN A LINE 10 TO 15 MILES WIDE EXTENDING FROM 20 MILES EAST OF MACON TO 20 NORTHWEST OF COLUMBIA TO 55 MILES WEST OF COLUMBIA AROUND SWEET SPRINGS. THE STORMS WERE MOVING TO THE EAST AROUND 30 MILES AN HOUR AS THE LINE MOVED TO THE SOUTHEAST AROUND 20 MILES AN HOUR. PEA-SIZED HAIL WAS REPORTED JUST NORTH OF MACON DURING THE LAST HOUR... AND EARLIER STORMS KNOCKED DOWN POWER LINES...AND POWER LINE POLES IN LINN COUNTY AROUND MEADVILLE NEAR HIGHWAY 36 AND IN PERSHING STATE PARK AROUND 430 PM CDT. BY 640 PM CDT THIS LINE OF THUNDERSTORMS WILL EXTEND FROM 40 MILES EAST OF MOBERLY TO COLUMBIA TO 35 MILES SOUTHWEST OF COLUMBIA TO ABOUT 20 MILES SOUTHWEST OF SEDALIA. STAY TUNED TO WEATHER RADIO FOR ADDITIONAL INFORMATION ON THESE STORMS. IF YOU OBSERVE SEVERE WEATHER...TAKE SHELTER IMMEDIATELY...THEN CALL THE NEAREST LAW ENFORCEMENT AGENCY TO RELAY YOUR MESSAGE TO THE NATIONAL WEATHER SERVICE. LB
Special weather statement, Sep 2, 5:47 PM CDT, 35 minutes before
MOZ006-009-010-011-014-022340- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA MO 540 PM CDT THU SEP 2 1993 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 9 PM... ...STRONG THUNDERSTORMS CONTINUED TO MOVE TO THE EAST THROUGH THE NORTH SECTIONS OF CENTRAL MISSOURI... AT 535 PM CDT WEATHER RADAR SHOWED STRONG THUNDERSTORMS IN A LINE 10 TO 15 MILES WIDE EXTENDING FROM 20 MILES EAST OF MACON TO 20 NORTHWEST OF COLUMBIA TO 55 MILES WEST OF COLUMBIA AROUND SWEET SPRINGS. THE STORMS WERE MOVING TO THE EAST AROUND 30 MILES AN HOUR AS THE LINE MOVED TO THE SOUTHEAST AROUND 20 MILES AN HOUR. PEA-SIZED HAIL WAS REPORTED JUST NORTH OF MACON DURING THE LAST HOUR... AND EARLIER STORMS KNOCKED DOWN POWER LINES...AND POWER LINE POLES IN LINN COUNTY AROUND MEADVILLE NEAR HIGHWAY 36 AND IN PERSHING STATE PARK AROUND 430 PM CDT. BY 640 PM CDT THIS LINE OF THUNDERSTORMS WILL EXTEND FROM 40 MILES EAST OF MOBERLY TO COLUMBIA TO 35 MILES SOUTHWEST OF COLUMBIA TO ABOUT 20 MILES SOUTHWEST OF SEDALIA. STAY TUNED TO WEATHER RADIO FOR ADDITIONAL INFORMATION ON THESE STORMS. IF YOU OBSERVE SEVERE WEATHER...TAKE SHELTER IMMEDIATELY...THEN CALL THE NEAREST LAW ENFORCEMENT AGEN:CY TO RELAY YOUR MESSAGE TO THE NATIONAL WEATHER SERVICE. LB
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 2, 3:53 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Madison | 37 min |
| Sep 2, 5:01 PM CDT | Severe Thunderstorm Warning | LSX | Bond | 44 min |
| Sep 2, 6:51 PM CDT | Severe Thunderstorm Warning | LSX | Brown, Pike | 55 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 1993Every severe thunderstorm warning in 1993
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; radar from the NEXRAD Level II archive.