Alert archive / Iowa / Tornado Warnings in 1993
Tornado Warning 9, NWS Omaha, NE
NWS Omaha, NE issued this tornado warning at Jul 8, 1993, 6:03 PM CDT for Harrison County, Iowa. It was in force for 27 min.
The area
The counties it named.
The facts
- Issued
- Jul 8, 1993, 6:03 PM CDT (23:03 UTC)
- Expired
- Jul 8, 1993, 6:30 PM CDT
- In force
- 27 min
- Issued by
- NWS Omaha, NE
- Area
- Whole counties
County Harrison County, IA
The nearest sounding before it
Omaha, NE (KOVN), launched 12:00Z, 11.1 hours before the alert went out and 61 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
- 67 J/kg
- Mixed-layer CIN
- -107 J/kg
- Mixed-layer LCL
- 760 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- -222 m²/s²
- 0-3 km storm-relative helicity
- -257 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 KOMA 082303 TOROMA IAC085-082330- BULLETIN - EBS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE OMAHA NE 603 PM CDT THU JUL 8 1993 THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 630 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN WEST CENTRAL IOWA ...HARRISON COUNTY AT 555 PM CDT RADAR INDICATED A POSSIBLE TORNADO SOUTH OF MONDAMIN...30 MILES NORTH OF OMAHA. THE STORM WAS MOVING EAST AT 30 MILES AN HOUR. TOWNS IN THE PATH OF THIS ST6ORM INCLUDE LOGAN...WOODBINE AND PORTSMOUTH. PERSONS IN THE WARNED AREA SHOULD TAKE SHELTER IN A BASEMENT IF AVAILABLE. OTHERWISE GO TO A SMALL INTERIOR ROOM ON THE LOWEST FLOOR. CARS AND MOBILE HOMES SHOULD BE ABANDONED. FOBERT
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 8, 1:21 PM CDT, 4 hours 42 minutes before
NEZ015-019-020-081930- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LINCOLN NE 120 PM CDT THU JUL 8 1993 ...THUNDERSTORMS IN SOUTHEAST NEBRASKA... AT 115 PM RADAR INDICATED A LINE OF SHOWERS AND2 THUNDERSTORMS IN SOUTHEAST NEBRASKA. THE PRECIPITATION WAS LOCATED FROM LINCOLN EAST TO NEBRASKA CITY AND WAS MOVING TO THE NORTHEAST AT 20 MPH. PEOPLE SHOULD BE ON THE LOOKOUT FOR LIGHTNING AND HEAVY RAIN. SCHLACHTER
Special weather statement, Jul 8, 1:25 PM CDT, 4 hours 38 minutes before
NEZ010-015-020-IAZ056-080-090-091-082030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE OMAHA NE 125 PM CDT THU JUL 8 1993 ...THUNDERSTORMS FORM OVER SOUTHEAST NEBRASKA... A SMALL BAND OF THUNDERSTORMS HAVE FORMED OVER SOUTHEAST NEBRASKA. AT 120 PM CDT...THEY WERE OVER WESTERN CASS COUNTY AND NORTHERN OTOE COUNTY...OR 30 MILES SOUTHWEST TO 40 MILES SOUTH OF OMAHA. THEY WERE MOVING TO THE NORTH AT 25 MPH AND WILL REACH LOUSVILLE AND PLATTSMOUTH BETWEEN 130 AND 145 PM CDT. THE STORMS MAY PRODUCE SOME BRIEF HEAVY RAIN AND GUSTY WINDS. THEY WILL MOVE INTO THE OMAHA METRO AREA AROUND 230 PM CDT. ANDERSON
Special weather statement, Jul 8, 1:28 PM CDT, 4 hours 35 minutes before
NEZ010-015-020-IAZ056-080-090-091-082030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE OMAHA NE 125 PM CDT THU JUL 8 1993 ...THUNDERSTORMS FORM OVER SOUTHEAST NEBRASKA... A SMALL BAND OF THUNDERSTORMS HAVE FORMED OVER SOUTHEAST NEBRASKA. AT 120 PM CDT...THEY WERE OVER WESTERN CASS COUNTY AND NORTHERN OTOE COUNTY...OR 30 MILES SOUTHWEST TO 40 MILES SOUTH OF OMAHA. THEY WERE MOVING TO THE NORTH AT 25 MPH AND WILL REACH LOUSVILLE AND PLATTSMZOUTH BETWEEN 130 AND 145 PM CDT. THE STORMS MAY PRODUCE SOME BRIEF HEAVY RAIN AND GUSTY WINDS. THEY WILL MOVE INTO THE OMAHA METRO AREA AROUND 230 PM CDT. ANDERSON
Special weather statement, Jul 8, 5:10 PM CDT, 53 minutes before
NEZ003-004-007>009-082330- SPECIAL WEATHER STATEMENT...CORRECT HEADLINE NATIONAL WEATHER SERVICE NORFOLK NE 510 PM CDT THU JUL 8 1993 ...SHOWERS AND A FEW THUNDERSTORMS ARE DEVELOPING OVER NORTHEAST NEBRASKA... AT 5 PM CDT...RADAR WAS SHOWING AN AREA OF SHOWERS AND A FEW THUNDERSTORMS GENERALLY EAST OF A LINE FROM YANKTON TO 20 MILES SOUTHWEST OF NORFOLK TO COLUMBUS. THE STRONGEST STORMS WERE LOCATED ABOUT 10 MILES NORTH OF HOWELLS OR 25 MILES SOUTHEAST OF NORFOLK AND JUST NORTH OF NEWMAN GROVE OR 25 MILE SOUTHWEST OF NORFOLK. THE STORMS ARE MOVING EAST AT 25 TO 30 MPH. THESE STORMS WILL PRODUCE BRIEF HEAVY RAIN AND WITH EXTREMELY SATURATED GROUND CONDITIONS...AREAS OF LOWLAND FLOODING ARE QUITE POSSIBLE. IF YOU LIVE IN A FLOOD PRONE AREA...BE ALERT FOR FLOODING AND MOVE TO HIGHER GROUND. DO NOT ATTEMPT TO DRIVE ACROSS RUNNING WATER. MML
Special weather statement, Jul 8, 5:13 PM CDT, 50 minutes before
NEZ003-004-007>009-082330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORFOLK NE 510 PM CDT THU JUL 8 1993 ...SHOWERS AND A FEW THUNDERSTORM AREA DEVELOPING OVER NORTHEAST NEBRASKA... AT 5 PM CDT...RADAR WAS SHOWING AN AREA OF SHOWERS AND A FEW THUNDERSTORMS GENERALLY EAST OF A LINE FROM YANKTON TO 20 MILES SOUTHWEST OF NORFOLK TO COLUMBUS. THE STRONGEST STORMS WERE LOCATED ABOUT 10 MILES NORTH OF HOWELLS OR 25 MILES SOUTHEAST OF NORFOLK AND JUST NORTH OF NEWMAN GROVE OR 25 MILE SOUTHWEST OF NORFOLK. THE STORMS ARE MOVING EAST AT 25 TO 30 MPH. THESE STORMS WILL PRODUCE BRIEF HEAVY RAIN AND WITH EXTREMELY SATURATED GROUND CONDITIONS...AREAS OF LOWLAND FLOODING ARE QUITE POSSIBLrE. IF YOU LIVE IN A FLOOD PRONE AREA...BE ALERT FOR FLOODING AND MOVE TO HIGHER GROUND. DO NOT ATTEMPT TO DRIVE ACROSS RUNNING WATER. MML
Special weather statement, Jul 8, 5:14 PM CDT, 49 minutes before
NEZ003-004-007>009-082330- SPECIAL WEATHER STATEMENT...CORRECT HEADLINE NATIONAL WEATHER SERVICE NORFOLK NE 510 PM CDT THU JUL 8 1993 ...SHOWERS AND A FEW THUNDERSTORMS ARE DEVELOPING OVER NORTHEAST NEBRASKA... AT 5 PM CDT...RADAR WAS SHOWING AN AREA OF SHOWERS AND A FEW THUNDERSTORMS GENERALLY EAST OF A LINE FROM YANKTON TO 20 MILES SOUTHWEST OF NORFOLK TO COLUMBUS. THE STRONGEST STORMS WERE LOCATED ABOUT 10 MILES NORTH OF HOWELLS OR 25 MILES SOUTHEAST OF NORFOLK AND JUST NORTH OF NEWMAN GROVE OR 25 MILE SOUTHWEST OF NORFOLK. THE STORMS ARE MOVING EAST AT 25 TO 30 MPH. THESE STORMS WILL PRODUCE BRIEF HEAVY RAIN AND WITH EXTREMELY SATURATED GROUND CONDITIONS...AREAS OF LOWLAND FLOvODING ARE QUITE POSSIBLE. IF YOU LIVE IN A FLOOD PRONE AREA...BE ALERT FOR FLOODING AND MOVE TO HIGHER GROUND. DO NOT ATTEMPT TO DRIVE ACROSS RUNNING WATER. MML
The office that day
Everything else NWS Omaha, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 8, 6:37 PM CDT | Tornado Warning | OAX | Harrison | 23 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.