Alert archive / Iowa / Tornado Warnings in 1993
Tornado Warning 27, NWS Des Moines, IA
NWS Des Moines, IA issued this tornado warning at Jul 10, 1993, 2:21 PM CDT for Chickasaw County, Floyd County, Iowa. It was in force for 39 min.
The area
The counties it named.
The facts
- Issued
- Jul 10, 1993, 2:21 PM CDT (19:21 UTC)
- Expired
- Jul 10, 1993, 3:00 PM CDT
- In force
- 39 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
Counties Chickasaw County, IA, Floyd County, IA
The nearest sounding before it
Minneapolis, MN (KSTC), launched 12:00Z, 7.4 hours before the alert went out and 216 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
- 12 J/kg
- Mixed-layer CIN
- -294 J/kg
- Mixed-layer LCL
- 1456 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 33 m²/s²
- 0-3 km storm-relative helicity
- 129 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KALO 101931 COR TORALO IAC067-037-102000- BULLETIN - EBS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE WATERLOO IA 221 PM CDT SAT JUL 10 1993 THE NATIONAL WEATHER SERVICE IN WATERLOO HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 300 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN NORTH CENTRAL IOWA ...EASTERN FLOYD COUNTY IN NORTHEAST IOWA ...WESTERN CHICKASAW COUNTY A TORNADO WAS REPORTED ON THE GROUND NEAR ROCKFORD OR 35 MILES NORTHWEST OF WATERLOO. THIS STORM WAS MOVING EAST AT 35 MILES AN HOUR. PEOPLE IN THE CHARLES CITY...IONIA...AND BASSETT AREAS SHOULD TAKE COVER IMMEDIATELY!! DURING A TORNADO...THE SAFEST PLACE IS IN A BASEMENT. GET UNDER A WORKBENCH OR P IECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER IN AN INTERIOR ROOM SUCH AS A CLOSET ON THE LOWEST FLOOR. AVOID WINDOWS. LINDENBERG/PABST &
What forecasters said that day
The local office's own words before this tornado 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, Jul 10, 12:50 PM CDT, 1 hour 31 minutes before
IAZ006-007-008-009-010-011-016-017-018-019-026-027-028-029-038- 039-040-101850- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WATERLOO IA 1250 PM CDT SAT JUL 10 1993 ...SEVERE THUNDERSTORM WATCH IN EFFECT THROUGH 5 PM... AT 1230 PM RADAR INDICATED STRONG THUNDERSTORMS IN NORTH CENTRAL IOWA. THESE STORM WERE PRODUCING WIND GUSTS TO 45 MILES AN HOUR...HEAVY DOWNPOURS AND PEA SIZE HAIL. THE STORMS WILL AFFECT AREAS TO THE NORTH OF HIGHWAY 3 AND WEST OF HIGHWAY 218 FOR THE NEXT FEW HOURS. THESE STORMS WILL AFFECT THE MASON CITY...HAMPTON...OSAGE AND CHARLES CITY AREAS. THESE STORMS COULD QUICKLY BECOME SEVERE AND PRODUCE DAMAGING WINDS ...HEAVY RAIN AND LARGE HAIL. THOSE INVOLVED RECREATIONAL ACTIVITIES ON LAKES IN NORTH CENTRAL IOWA SHOULD LEAVE THE WATER AND BE PREPARED TO SEEK SHELTER AS THE LARGE AREA OF STRONG THUNDERSTORMS MOVES QUICKLY INTO NORTH CENTRAL AND NORTHEAST IOWA. STORMS COULD QUICKLY PRODUCE DAMAGING WINDS AND LARGE HAIL. A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR ALL OF NORTHEAST AND NORTH CENTRAL IOWA THROUGH 5 PM. STAY TUNED TO NOAA WEATHER RADIO AND LOCAL RADI AND TELEVISION FOR ADDITIONAL STATEMENTS AND POSSIBLE WARNINGS. PABST
Special weather statement, Jul 10, 12:51 PM CDT, 1 hour 30 minutes before
IAZ006-007-008-009-010-011-016-017-018-019-026-027-028-029-038- 039-040-101850- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WATERLOO IA 1250 PM CDT SAT JUL 10 1993 ...SEVERE THUNDERSTORM WATCH IN EFFECT THROUGH 5 PM... AT 1230 PM RADAR INDICATED STRONG THUNDERSTORMS IN NORTH CENTRAL IOWA. THESE STORM WERE PRODUCING WIND GUSTS TO 45 MILES AN HOUR...HEAVY DOWNPOURS AND PEA SIZE HAIL. THE STORMS WILL AFFECT AREAS TO THE NORTH OF HIGHWAY 3 AND WEST OF HIGHWAY 218 FOR THE NEXT FEW HOURS. THESE STORMS WILL AFFECT THE MASON CITY...HAMPTON...OSAGE AND CHARLES CITY AREAS. THESE STORMS COULD QUICKLY BECOME SEVERE AND PRODUCE DAMAGING WINDS ...HEAVY RAIN AND LARGE HAIL. THOSE INVOLVED RECREATIONAL ACTIVITIES ON LAKES IN NORTH CENTRAL IOWA SHOULD LEAVE THE WATER AND BE PREPARED TO SEEK SHELTER AS THE LARGE AREA OF STRONG THUNDERSTORMS MOVES QUICKLY INTO NORTH CENTRAL AND NORTHEAST IOWA. STORMS COULD QUICKLY PRODUCE DAMAGING WINDS AND LARGE HAIL. A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR ALL OF NORTHEAST AND NORTH CENTRAL IOWA THROUGH 5 PM. STAY TUNED TO NOAA WEATHER RADIO AND LOCAL RADI AND TELEVISION FOR ADDITIONAL STATEMENTS AND POSSIBLE WARNINGS. PABST
Special weather statement, Jul 10, 12:58 PM CDT, 1 hour 23 minutes before
IAZALL-101900- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 1258 PM CDT SAT JUL 10 1993 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR ABOUT THE NORTH HALF OF IOWA FROM NOON UNTIL 5 PM CDT THIS SATURDAY AFTERNOON... AT 1250 PM CDT...NUMEROUS VERY STRONG THUNDERSTORMS...PRODUCING HEAVY RAIN...BRIEF STRONG GUSTY WINDS TO 45 MILES AN HOUR...AND SMALL HAIL CONTINUED ACROSS NORTHWEST AND NORTH CENTRAL IOWA. THIS STORM LINE EXTENDED FROM 5 MILES NORTHWEST OF IDA GROVE...TO STORM LAKE...TO POCAHONTAS...TO ALGONA...TO THE MINNESOTA BORDER NORTH OF MASON CITY. ALSO...ISOLATED STRONG STORMS WERE ALSO LOCATED 5 MILES NORTHEAST OF ROCKWELL CITY AND 5 MILES NORTHEAST OF FORT DODGE. THESE STORMS WERE PRODUCING AROUND ONE TO ONE AND ONE-HALF INCHES OF RAIN PER HOUR...AS THEY MOVE EAST AT 25 TO 30 MILES AN HOUR. PEA SIZED HAIL WAS REPORTED AT SPENCER AT 1201 PM...AT GRAETINGER AT 1225 PM...AND 2 MILES WEST OF FORT DODGE AT 1233 PM...AND AT THE POCAHONTAS AIRPORT AT 1255 PM. HEAVY RAIN WILL CAUSE FLOODING OF FARM FIELDS...ROADSIDE DITCHES... UNDERPASSES AND CITY STREETS ALONG WITH RAPID RISES OF SMALL STREAMS. R A PRENTICE
Special weather statement, Jul 10, 1:42 PM CDT, 39 minutes before
IAZALL-101915- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 143 PM CDT SAT JUL 10 1993 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR ABOUT THE NORTH HALF OF IOWA UNTIL 5 PM CDT THIS SATURDAY AFTERNOON... ...VERY STRONG THUNDERSTORMS CONTINUED OVER NORTHWEST AND NORTH CENTRAL IOWA... AT 1225 PM CDT...NUMEROUS VERY STRONG THUNDERSTORMS...PRODUCING VERY LARGE AMOUNTS OF RAIN...BRIEF STRONG GUSTY WIND...AND SMALL HAIL AND FREQUENT DANGEROUS LIGHTNING WERE LOCATED IN A 60 MILE WIDE AREA... CENTERED FROM NEAR CARROLL...70 MILES NORTHWEST OF DES MOINES...TO LIVERMORE...50 MILES SOUTHWEST OF MASON CITY...TO MASON CITY...TO THE IOWA/MINNESOTA BORDER 40 MILES NORTHEAST OF MASON CITY. THE STORMS WERE MOVING EAST AT 25 TO 30 MILES AN HOUR. . SHOULD THREATENING WEATHER APPROACH...BE PREPARED TO TAKE COVER IMMEDIATELY. ALSO...FLOODING OF FARM FIELDS...ROADSIDE DITCHES...UNDERPASSES AND CITY STREETS ALONG WITH RAPID RISES OF SMALL STREAMS WILL OCCUR WITH THESE STORMS WPM
Special weather statement, Jul 10, 1:43 PM CDT, 38 minutes before
IAZALL-101915- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 143 PM CDT SAT JUL 10 1993 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR ABOUT THE NORTH HALF OF IOWA UNTIL 5 PM CDT THIS SATURDAY AFTERNOON... ...VERY STRONG THUNDERSTORMS CONTINUED OVER NORTHWEST AND NORTH CENTRAL IOWA... AT 1225 PM CDT...NUMEROUS VERY STRONG THUNDERSTORMS...PRODUCING VERY LARGE AMOUNTS OF RAIN...BRIEF STRONG GUSTY WIND...AND SMALL HAIL AND FREQUENT DANGEROUS LIGHTNING WERE LOCATED IN A 60 MILE WIDE AREA... CENTERED FROM NEAR CARROLL...70 MILES NORTHWEST OF DES MOINES...TO LIVERMORE...50 MILES SOUTHWEST OF MASON CITY...TO MASON CITY...TO THE IOWA/MINNESOTA BORDER 40 MILES NORTHEAST OF MASON CITY. THE STORMS WERE MOVING EAST AT 25 TO 30 MILES AN HOUR. . SHOULD THREATENING WEATHER APPROACH...BE PREPARED TO TAKE COVER IMMEDIATELY. ALSO...FLOODING OF FARM FIELDS...ROADSIDE DITCHES...UNDERPASSES AND CITY STREETS ALONG WITH RAPID RISES OF SMALL STREAMS WILL OCCUR WITH THESE STORMS WPM WOUS01KAWN ,?$
Special weather statement, Jul 10, 2:19 PM CDT, 2 minutes before
IAZ006-007-008-009-010-011-016-017-018-019-026-027-028-029-038- 039-040-101850- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WATERLOO IA 219 PM CDT SAT JUL 10 1993 ...SEVERE THUNDERSTORM WATCH IN EFFECT THROUGH 5 PM... AT 219 PM CDT STRONG THUNDERSTORMS WERE RUMBLING THROUGH NORTHEAST IOWA FROM ACKLEY WEST OF WATERLOO TO THE DECORAH AREA. THESE STORMS HAVE PRODUCE VERY HEAVY RAIN...PEA SIZE HAIL...LIGHTNING AND FUNNEL CLOUD REPORTS. THESE STRONG THUNDERSTORMS ARE MOVING EAST AT 35 MILES AN HOUR. THE STORM WILL AFFECT THE FOLLOWING TOWNS BETWEEN 225 AND 330 PM CDT. THE TOWNS ARE CHARLES CITY...GREENE...NEW HARTFORD...DENVER... PARKERSBURG...NASHUA...WATERLOO...WAVERLY...NEW HAMPTON...DECORAH ...WAUKON AND SUMNER. THESE STORMS ARE DANGEROUS AND COULD BECOME SEVERE AT ANYTIME. STAY ALERT FOR THESE DANGEROUS STORMS. RR
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 10, 1:19 PM CDT | Severe Thunderstorm Warning | DMX | Hancock | 41 min |
| Jul 10, 1:19 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo | 56 min |
| Jul 10, 1:35 PM CDT | Severe Thunderstorm Warning | DMX | Webster | 25 min |
| Jul 10, 1:38 PM CDT | Tornado Warning | DMX | Cerro Gordo | 22 min |
| Jul 10, 1:44 PM CDT | Severe Thunderstorm Warning | DMX | Mitchell | 46 min |
| Jul 10, 2:03 PM CDT | Severe Thunderstorm Warning | DMX | Hamilton, Webster | 27 min |
| Jul 10, 2:33 PM CDT | Severe Thunderstorm Warning | DMX | Winneshiek | 27 min |
| Jul 10, 2:40 PM CDT | Severe Thunderstorm Warning | DMX | Allamakee | 50 min |
| Jul 10, 2:45 PM CDT | Severe Thunderstorm Warning | DMX | Story | 30 min |
| Jul 10, 2:46 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk | 29 min |
| Jul 10, 3:02 PM CDT | Severe Thunderstorm Warning | DMX | Buchanan, Fayette | 43 min |
| Jul 10, 3:50 PM CDT | Severe Thunderstorm Warning | DMX | Fayette | 21 min |
Nearby
Tornado Warnings in Iowa, 1993Every tornado warning in 1993Tornadoes 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.