1. Like all other surface features, sea breeze fronts lie inside troughs of low pressure . 2. A sharp trough of low pressure organized into a tropical depression on August 16. 3. Continued weakening took place as a trough of low pressure approached from the southwest. 4. The storm tracked towards Bermuda along a trough of low pressure in the Atlantic Ocean. 5. At night, winds were light as a trough of low pressure lingered over the area. 6. A few clouds were seen over the Northwest in association with a lingering trough of low pressure . 7. The following day, however, the depression became less defined and degenerated into a trough of low pressure . 8. A strong upper-level trough of low pressure was expected to move into the West, producing rain and snow. 9. The mountain-pass snows developed as a cold upper-level trough of low pressure arrived from the Gulf of Alaska. 10. Only the Northwest saw moderate temperatures as a trough of low pressure brought cool weather and scattered showers.
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