Alert archive / Illinois / Flash Flood Warnings in 1994
Flash Flood Warning 8, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at Apr 11, 1994, 8:10 AM CDT for 4 counties in Illinois. It was in force for 5 hr.
The area
The counties it named.
The facts
- Issued
- Apr 11, 1994, 8:10 AM CDT (13:10 UTC)
- Expired
- Apr 11, 1994, 1:00 PM CDT
- In force
- 5 hr
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
Counties Monroe County, IL, Randolph County, IL, Saint Clair County, IL, Washington County, IL
The radar
The St Louis radar (KLSX), 87 km from the middle of the area, began a volume at 13:14 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.
The nearest sounding before it
Paducah/Barkley, KY (KPAH), launched 12:00Z, 1.2 hours before the alert went out and 168 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 513 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- 389 m²/s²
- 0-3 km storm-relative helicity
- 450 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSTL 111312 FFWSTL ILC027-189-133-157-163-111800- BULLETIN - EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 810 AM CDT MON APR 11 1994 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 100 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTH CENTRAL ILLINOIS ...CLINTON COUNTY...WASHINGTON COUNTY IN SOUTHWEST ILLINOIS ...MONROE COUNTY...RANDOLPH COUNTY...ST CLAIR COUNTY THE HEAVY RAINS OF LAST NIGHT AND EARLY TODAY IS PRODUCING FLOODING PROBLEMS OVER SEVERAL COUNTIES IN SOUTH CENTRAL AND SOUTHWEST ILLINOIS. IN RANDOLPH COUNTY....THE ILLINOIS STATE POLICE REPORTED SEVERAL ROADS UNDER WATER...AND TRAVEL IN AND OUT OF PRAIRIE DU ROCHER AND MODOC HAS B NHALTED DUE TO HIGH WATER. ONE LANE OF HIGHWAY 155 NEAR PRAIRIE DU ROCHER WAS ALSO CLOSED DUE TO A MUD SLIDE. WHILE FLOODING PROBLEMS OVER THESE COUNTIES DO NOT APPEAR TO BE WIDESPREAD...LOW LYING AND FLOOD PRONE AREAS CAN EXPECT TO HAVE SIGNIFICANT FLOODING PROBLEMS. RADAR INDICATES RAIN WILL CONTINUE OVER THESE AREAS FOR THE NEXT FEW HOURS...CONTINUING THE FLOOD THREAT FOR MUCH OF THE MORNING. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND. TRUETT/GLASS &
What forecasters said that day
The local office's own words before this flash flood 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, Apr 11, 3:30 AM CDT, 4 hours 40 minutes before
MOZALL-111030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 327 AM CDT MON APR 11 1994 ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR MUCH OF SOUTHWEST AND SOUTH CENTRAL MISSOURI UNTIL 9 AM CDT THIS MORNING... AT 330 AM NATIONAL WEATHER SERVICE RADAR INDICATED A NEARLY STATIONARY BAND OF THUNDERSTORMS WHICH TRAILED FROM EAST CENTRAL MISSOURI THROUGH SOUTHWEST MISSOURI...INTO OKLAHOMA. NO SEVERE WEATHER HAS BEEN REPORTED SINCE 230 AM CDT...HOWEVER AS THESE STORMS LIFT OUT OF OKLAHOMA AND KANSAS INTO MISSOURI..SOME OF THESE STORMS COULD PRODUCE HAIL AND DAMAGING WINDS. THE ORIENTATION OF THESE STORMS IS SUCH THAT ONE STORM FOLLOWS ANOTHER...DUMPING COPIOUS AMOUNTS OF RAIN ON LOCAL AREAS. PERSONS IN COMMUNITES STRETCHING FROM NEAR NEVADA MISSOURI...50 MILES NORTH OF JOPLIN...TO NORTH PORTIONS OF LAKE OF THE OZARKS CAN EXPECT FREQUENT PERIODS OF RAIN WITH POSSIBLE FLASH FLOODING. HAIL AND DAMAGING WINDS COULD ACCOMPANY SOME OF THESE STORMS AS WELL. PEDIGO
Special weather statement, Apr 11, 5:55 AM CDT, 2 hours 15 minutes before
MOZ001>105-KSZ012>105-ILZ095>102-111600- MISSOURI SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 6 AM CDT MON APR 11 1994 THERE IS A MODERATE RISK OF SEVERE THUNDERSTORMS TODAY AND TONIGHT OVER SOUTHWEST AND SOUTH CENTRAL MISSOURI...GENERALLY ALONG AND SOUTH OF A JOPLIN...SPRINGFIELD...WEST PLAINS LINE. A SLIGHT RISK OF SEVERE THUNDERSTORMS IS POSSIBLE OVER THE REMAINDER OF THE STATE. STORM SPOTTER GROUPS AND EMERGENCY MANAGERS SH"OULD KEEP ADVISED OF THE LATEST FORECASTS FOR POSSIBLE SKYWARN ACTION. TRUETT
Special weather statement, Apr 11, 6:55 AM CDT, 1 hour 15 minutes before
MOZ001>105-KSZ012>105-ILZ095>102-111400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 655 AM CDT MON APR 11 1994 THE THREAT OF SEVERE WEATHER HAS SHIFTED SOUTH OVER THE LAST FEW HOURS. BECAUSE OF THIS...A NEW SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR PARTS OF SOUTHWEST AND SOUTH CENTRAL MISSOURI UNTIL 1 PM THIS AFTERNOON. THIS WATCH INCLUDES THE CITIES OF JOPLIN...SPRINGFIELD ...AND BRANSON. LARGE HAIL...DAMAGING WINDS...AND CONTINUED HEAVY RAIN IS POSSIBLE IN THESE AREAS. THIS WATCH REPLACES THE SEVERE THUNDERSTORM WATCH NUMBER 70...THAT WAS ISSUED AT 133 AM THIS MORNING. THIS MEANS THAT THE THREAT OF DAMAGING WINDS AND LARGE HAIL IN SECTIONS OF WEST CENTRAL AND CENTRAL MISSOURI...INCLUDING THE JEFFERSON CITY...ROLLA...AND NEVADA AREAS...HAS TEMPORARILY ENDED. HOWEVER...FLOODING...AND SCATTERED AREAS OF HEAVY RAIN...WILL CONTINUE IN THESE AREAS THROUGHOUT THE MORNING. TRUETT
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 11, 8:10 AM CDT | Flash Flood Warning | LSX | Clinton | 5 hr |
Nearby
Flash Flood Warnings in Illinois, 1994Every flash flood warning in 1994
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.