Alert archive / Iowa / Severe Thunderstorm Warnings in 1994
Severe Thunderstorm Warning 48, NWS Quad Cities, IA
NWS Quad Cities, IA issued this severe thunderstorm warning at Jul 7, 1994, 8:00 PM CDT for Clayton County, Iowa. It was in force for 30 min.
The area
The counties it named.
The facts
- Issued
- Jul 7, 1994, 8:00 PM CDT (01:00 UTC)
- Expired
- Jul 7, 1994, 8:30 PM CDT
- In force
- 30 min
- Issued by
- NWS Quad Cities, IA
- Area
- Whole counties
County Clayton County, IA
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 00:00Z, 1.0 hours before the alert went out and 318 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
- 2 J/kg
- Mixed-layer CIN
- -292 J/kg
- Mixed-layer LCL
- 1127 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- -17 m²/s²
- 0-3 km storm-relative helicity
- -3 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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
Local storm report, Jul 7, 7:06 PM CDT, 54 minutes before
PRELIMINARY LOCAL STORM REPORT...UPDATE
NATIONAL WEATHER SERVICE DUBUQUE IA
705 PM MON JUL 07 1994
...PRELIMINARY REPORT FOR JULY 4TH 1994...
EVENT TIME DESC
1341 UPROOTED TREES & BARN BLOWN DOWN NEAR
DICKEYVILLE 10 MILES NORTH OF DBQ REPORTED BY
TRAINED SPOTTER.
1350 SHINGLES BLOWN OFF ROOF NEAR DICKEYVILLE WHICH
IS 10 MILES NORTH OF DBQ REPORTED BY POLICE DEPT.
1421 2 BUILDINGS DESTROYED NEAR WOOLFORD WHICH IS 40
MILES EAST OF DBQ REPORTED BY POLICE DEPT.Local storm report, Jul 7, 7:06 PM CDT, 54 minutes before
PRELIMINARY LOCAL STORM REPORT...UPDATE
NATIONAL WEATHER SERVICE DUBUQUE IA
705 PM MON JUL 07 1994
...PRELIMINARY REPORT FOR JULY 4TH 1994...
EVENT TIME DESC
1341 UPROOTED TREES & BARN BLOWN DOWN NEAR
DICKEYVILLE 10 MILES NORTH OF DBQ REPORTED BY
TRAINED SPOTTER.
1350 SHINGLES BLOWN OFF ROOF NEAR DICKEYVILLE WHICH
IS 10 MILES NORTH OF DBQ REPORTED BY POLICE DEPT.
1421 2 BUILDINGS DESTROYED NEAR WOOLFORD WHICH IS 40
MILES EAST OF DBQ REPORTED BY POLICE DEPT.Local storm report, Jul 7, 7:07 PM CDT, 53 minutes before
PRELIMINARY LOCAL STORM REPORT...UPDATE...CORRECTION
NATIONAL WEATHER SERVICE DUBUQUE IA
707 PM THU JUL 07 1994
...PRELIMINARY REPORT FOR JULY 4TH 1994...
EVENT TIME DESC
1341 UPROOTED TREES & BARN BLOWN DOWN NEAR
DICKEYVILLE 10 MILES NORTH OF DBQ REPORTED BY
TRAINED SPOTTER.
1350 SHINGLES BLOWN OFF ROOF NEAR DICKEYVILLE WHICH
IS 10 MILES NORTH OF DBQ REPORTED BY POLICE DEPT.
1421 2 BUILDINGS DESTROYED NEAR WOOLFORD WHICH IS 40
MILES EAST OF DBQ REPORTED BY POLICE DEPT.Local storm report, Jul 7, 7:07 PM CDT, 53 minutes before
PRELIMINARY LOCAL STORM REPORT...UPDATE...CORRECTION
NATIONAL WEATHER SERVICE DUBUQUE IA
707 PM THU JUL 07 1994
...PRELIMINARY REPORT FOR JULY 4TH 1994...
EVENT TIME DESC
1341 UPROOTED TREES & BARN BLOWN DOWN NEAR
DICKEYVILLE 10 MILES NORTH OF DBQ REPORTED BY
TRAINED SPOTTER.
1350 SHINGLES BLOWN OFF ROOF NEAR DICKEYVILLE WHICH
IS 10 MILES NORTH OF DBQ REPORTED BY POLICE DEPT.
1421 2 BUILDINGS DESTROYED NEAR WOOLFORD WHICH IS 40
MILES EAST OF DBQ REPORTED BY POLICE DEPT.Special weather statement, Jul 7, 7:35 PM CDT, 25 minutes before
IAZ030-041-042-053-054-ILZ001-WIZ061-067-080130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DUBUQUE IA 735 PM CDT THU JUL 7 1994 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR ALL OF THE TRI STATE UNTIL 8PM... ...A FLASH FLOOD WATCH REMAINS IN EFFECT FOR THE IOWA COUNTIES OF THE TRI STATE TONIGHT... AT 730 PM CDT...RADAR INDICATED A THUNDERSTORM PRODUCING HEAVY RAINFALL DEVELOPING 10 MILES EAST OF BOSCOBEL IN GRANT COUNTY WHICH IS 40 MILES NORTH OF DUBUQUE. THIS THUNDERSTORM WAS MOVING NORTHEAST AT 20 MILES AN HOUR AND WILL BE EXITING THE GRANT COUNTY AREA BY 800 PM CDT. ELSEWHERE ACROSS THE TRI STATE A SHOWER WAS LOCATED NEAR THE TOWN OF GUNDER IN CLAYTON COUNTY WHICH IS 40 MILES NORTHWEST OF DUBUQUE. THIS SHOWER WAS ALSO MOVING NORTHEAST AT 20 MILES AN HOUR. TO THE WEST OF THE TRI STATE AN AREA OF STRONGER THUNDERSTORMS 30 MILES WIDE EXTENDING FROM NEAR ROCHESTER SOUTHWARD TO THE WATERLOO AREA AND WAS MOVING EAST AT 30 MILES AN HOUR. BE PREPARED TO TAKE SHELTER IMMEDIATELY IF THREATNING WEATHER APPROACHES YOUR AREA. COX NNNN
Special weather statement, Jul 7, 7:35 PM CDT, 25 minutes before
IAZ030-041-042-053-054-ILZ001-WIZ061-067-080130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DUBUQUE IA 735 PM CDT THU JUL 7 1994 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR ALL OF THE TRI STATE UNTIL 8PM... ...A FLASH FLOOD WATCH REMAINS IN EFFECT FOR THE IOWA COUNTIES OF THE TRI STATE TONIGHT... AT 730 PM CDT...RADAR INDICATED A THUNDERSTORM PRODUCING HEAVY RAINFALL DEVELOPING 10 MILES EAST OF BOSCOBEL IN GRANT COUNTY WHICH IS 40 MILES NORTH OF DUBUQUE. THIS THUNDERSTORM WAS MOVING NORTHEAST AT 20 MILES AN HOUR AND WILL BE EXITING THE GRANT COUNTY AREA BY 800 PM CDT. ELSEWHERE ACROSS THE TRI STATE A SHOWER WAS LOCATED NEAR THE TOWN OF GUNDER IN CLAYTON COUNTY WHICH IS 40 MILES NORTHWEST OF DUBUQUE. THIS SHOWER WAS ALSO MOVING NORTHEAST AT 20 MILES AN HOUR. TO THE WEST OF THE TRI STATE AN AREA OF STRONGER THUNDERSTORMS 30 MILES WIDE EXTENDING FROM NEAR ROCHESTER SOUTHWARD TO THE WATERLOO AREA AND WAS MOVING EAST AT 30 MILES AN HOUR. BE PREPARED TO TAKE SHELTER IMMEDIATELY IF THREATNING WEATHER APPROACHES YOUR AREA. COX NNNN
The office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 7, 9:05 PM CDT | Severe Thunderstorm Warning | DVN | Grant | 25 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 1994Every severe thunderstorm 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.